- Not communicating since the start of the CAN bus check
- Communication occurred at least once since the start of the CAN bus check, but is currently not occurring.
Lexus NX: Diagnosis System
Lexus NX Service Manual / Power Source & Network / Networking / Can Communication System / Diagnosis System
DIAGNOSIS SYSTEM
CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN COMMUNICATION
(a) The systems (ECUs and sensors) that use CAN communication vary depending on the vehicle and optional equipment. Check which systems (ECUs and sensors) are installed to the vehicle.
| Connected to | Code | ECU/Sensor Name | Techstream Display | Applicability |
|---|---|---|---|---|
| - | CGW | Central Gateway ECU (Network Gateway ECU) | - | Installed on all vehicles |
| V Bus | DLC3 | DLC3 | - | Installed on all vehicles |
| Bus 2 | MET | Combination Meter Assembly | Combination Meter | Installed on all vehicles |
| STR | Steering Sensor | Spiral cable (Steering Angle Sensor) | Installed on all vehicles | |
| EPS | Power Steering ECU Assembly | Power Steering (EPS) | Installed on all vehicles | |
| SMT | Certification ECU (Smart Key ECU Assembly) | Certification (Smart) | Installed on all vehicles | |
| SRS | Airbag ECU Assembly | Airbag | Installed on all vehicles | |
| A/C | Air Conditioning Amplifier Assembly | Air Conditioning Amplifier | Installed on all vehicles | |
| MB | Main Body ECU (Multiplex Network Body ECU) | Main Body | Installed on all vehicles | |
| HUD | Meter Mirror Sub-assembly | Head Up Display | w/ Headup Display | |
| BRK | Brake Booster with Master Cylinder Assembly (Skid Control ECU) | Skid Control (ABS/VSC/TRAC) | Installed on all vehicles | |
| LIT | Headlight ECU Sub-assembly LH | Headlight swivel (AFS) | for Triple Beam Headlight | |
| HV | Hybrid Vehicle Control ECU | Hybrid Vehicle Control | Installed on all vehicles | |
| PKB | Parking Brake ECU Assembly | Electric Parking Brake | Installed on all vehicles | |
| ASC | Stereo Component Equalizer Assembly | ASC | w/ ASC System | |
| ENG | ECM | Engine | Installed on all vehicles | |
| Bus 3 | YGW | Bus Buffer ECU | Accessory Gateway | w/ Bus Buffer ECU |
| DCM | DCM (Telematics Transceiver) | DCM | w/ Telematics Transceiver | |
| AV | Radio Receiver Assembly | Display and Navigation (AVN) | Installed on all vehicles | |
| Bus 5 | F-MR | Millimeter Wave Radar Sensor Assembly | Front Radar | w/ Pre-collision System |
| F-CAM | Forward Recognition Camera | Front Camera Module | w/ Pre-collision System | |
| CS | Clearance Warning ECU Assembly | Clearance Warning (Intuitive Parking Assist) | w/ Intuitive Parking Assist System | |
| PAC | Parking Assist ECU | Panoramic View Monitor / Circumference Monitoring Camera Control Module | w/ Panoramic View Monitor System | |
| BSM | Blind Spot Monitor Sensor LH | Blind Spot Monitor Master | w/ Blind Spot Monitor System | |
| SUS | Absorber Control ECU | Suspension Control (Air Suspension) | w/ Adaptive Variable Suspension System | |
| VAS | Vehicle Approaching Speaker Controller | Vehicle Proximity Notification System | Installed on all vehicles | |
| R-CA | Rear Television Camera Assembly | Parking Assist Monitor System / Rear Camera | Installed on all vehicles | |
| HV | Hybrid Vehicle Control ECU | Hybrid Vehicle Control | Installed on all vehicles | |
| Sub Bus 1 | MB | Main Body ECU (Multiplex Network Body ECU) | Main Body | Installed on all vehicles |
| T&T | Multiplex Tilt and Telescopic ECU | Multiplex Tilt and Telescopic | for Power Tilt and Power Telescopic Steering Column | |
| DST | Front Power Seat Switch (for Driver Side) | D-Seat | w/ Memory | |
| MIR-R | Outer Mirror Control ECU Assembly RH | Front Door RH/R-Mirror (FR-Door/R-Mirror) | w/ Memory | |
| MIR-L | Outer Mirror Control ECU Assembly LH | Front Door LH/L-Mirror (FL-Door/L-Mirror) | w/ Memory | |
| BKD | Multiplex Network Door ECU | Back Door | w/ Power Back Door System |
CAN BUS CHECK
HINT:
The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the Techstream.
(a) Using the Techstream, select the CAN Bus Check screen.
CAN Bus CheckNOTICE:
- It may be possible to select buses that do not have ECUs or sensors from the bus selection pull-down menu. This is not a malfunction. (This occurs when optional devices are not on a sub bus that is monitored by a gateway function equipped ECU.)
-
In the bus selection pull down menu, all buses applicable to the model are displayed (e.g. LIN communication buses are also displayed). Therefore, refer to the wiring diagrams to check the names of sub buses for CAN communication.
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HINT:
Different connection statuses are indicated by the background color of ECUs and sensors that are displayed.
Explanation of CAN Bus Check Screen| Bus Type | Background Color | Connection Status |
|---|---|---|
| Bus | White | Communication has been normal. |
| Yellow | Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication). | |
| Red | Currently not communicating (either of the following): | |
| Not displayed | Either of the following:
| |
| Sub bus with a gateway function equipped ECU that does not memorize connected ECUs or sensors*2 | White | Communication has been normal since the start of the CAN bus check. |
| Yellow | Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication). | |
| Red | Communication occurred at least once since the start of the CAN bus check, but is currently not occurring. | |
| Not displayed | Communication stop has continued since the start of the CAN bus check.*1 | |
| Sub bus with a gateway function equipped ECU that memorizes connected ECUs and sensors*3 | White | Communication has been normal. |
| Yellow | Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication). | |
| Red | Currently not communicating (either of the following):
| |
| Not displayed | Either of the following:
|
- Gateway function equipped ECUs relay signals between ECUs and sensors connected to different buses.
- *1: An ECU or sensor is installed to the vehicle but is not displayed on the "Communication Bus Check" screen.
- *2: The gateway function equipped ECU does not memorize ECUs and sensors connected to its respective sub bus.
- *3: The gateway function equipped ECU memorizes ECUs and sensors connected to its respective sub bus.
- *4: When the central gateway ECU (network gateway ECU) has an internal malfunction or cannot communicate with the Techstream, the name of buses, sub buses, ECUs and sensors will not be displayed.
- *5: When no ECUs or sensors are connected to a bus, the message "There is no system found on the communication Bus." will be displayed.
- *6: When a gateway function equipped ECU cannot communicate with the central gateway ECU (network gateway ECU), the name of sub buses and ECUs or sensors connected to the sub bus will not be displayed.
- *7: When no ECUs or sensors are connected to the sub bus, the message "There is no system found on the communication Bus." will be displayed.
- If there is no communication between the Techstream and the vehicle, or no ECUs or sensors are displayed as connected, check the central gateway ECU (network gateway ECU) and V bus (the bus that connects the DLC3 to the central gateway ECU (network gateway ECU)) for malfunctions.
(b) Observe the connection response screen for approximately 2 minutes to check for a change in connection status of the connected ECUs and sensors.
HINT:
- If an open occurs in one of the lines of a CAN branch (except DLC3), output from the other branch line (the line that is not open) will be unstable and it may interfere with the response (display) of other ECUs and sensors.
- If the connection status changes during the inspection, repair the open in the branch line of the ECU or sensor that does not respond (is not detected) and then perform the CAN bus check again.
HOW TO INTERPRET CAN BUS CHECK SCREEN
(a) When a communication stop is currently occurring, the probable malfunctioning part can be determined from the CAN bus check and by using the following methods.
NOTICE:
The following CAN bus wiring diagram is provided only as an example. This wiring diagram is different from the actual wiring diagram for this vehicle.
HINT:
- When a communication stop is currently occurring, it is easier to determine the probable malfunctioning part from the CAN bus check rather than from communication DTCs.
- Wait for approximately 2 minutes after turning the power switch on (IG) (or simulate the driving conditions that enable the malfunction to be reproduced) and select "CAN Bus Check". Then observe the communication status of each ECU on the screen.
(b) If a communication error of only 1 ECU or sensor is indicated on the CAN Bus Check screen, a communication stop of the ECU or sensor is suspected.
Example: Open in both CAN branch lines of HV on the bus 4
| *a | Bus 2 | *b | Bus 4 |
| *c | Sub Bus | *d | V Bus |
| *e | Location of Malfunction | *f | Background color is red |
HINT:
When there are communication stops, ECUs that are present in the vehicle may not be displayed on the CAN Bus Check screen.
(c) If communication errors for multiple ECUs or sensors are indicated on the CAN Bus Check screen, then a communication stop of the ECU or sensor that shows a more serious communication stop (an ECU or sensor whose background color is red) is suspected.
Example: Open in a CAN branch line for HV on the bus 4
| *a | Background color is red | *b | Background color intermittently becomes yellow or red |
| *c | Not displayed or background color is yellow or red | - | - |
| Bus Type | Background Color | Connection Status |
|---|---|---|
| Bus | White | Communication has been normal. |
| Yellow | Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication). | |
| Red | Currently not communicating (either of the following):
| |
| Not displayed | Either of the following:
| |
| Sub bus with a gateway function equipped ECU that does not memorize connected ECUs or sensors*2 | White | Communication has been normal since the start of the CAN bus check. |
| Yellow | Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication). | |
| Red | Communication occurred at least once since the start of the CAN bus check, but is currently not occurring. | |
| Not displayed | Communication stop has continued since the start of the CAN bus check.*1 | |
| Sub bus with a gateway function equipped ECU that memorizes connected ECUs and sensors*3 | White | Communication has been normal. |
| Yellow | Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication). | |
| Red | Currently not communicating (either of the following):
| |
| Not displayed | Either of the following:
|
- Gateway function equipped ECUs relay signals between ECUs and sensors connected to different buses.
- *1: An ECU or sensor is installed to the vehicle but is not displayed on the "Communication Bus Check" screen.
- *2: The gateway function equipped ECU does not memorize ECUs and sensors connected to its respective sub bus.
- *3: The gateway function equipped ECU memorizes ECUs and sensors connected to its respective sub bus.
- *4: When the central gateway ECU (network gateway ECU) has an internal malfunction or cannot communicate with the Techstream, the name of buses, sub buses, ECUs and sensors will not be displayed.
- *5: When no ECUs or sensors are connected to a bus, the message "There is no system found on the communication Bus." will be displayed.
- *6: When a gateway function equipped ECU cannot communicate with the central gateway ECU (network gateway ECU), the name of sub buses and ECUs or sensors connected to the sub bus will not be displayed.
- *7: When no ECUs or sensors are connected to the sub bus, the message "There is no system found on the communication Bus." will be displayed.
- The example of the CAN Bus Check screen in the illustration shows the result of electrical noise on the CAN bus which is caused by an open in a CAN branch line of HV is also unstable. In addition, in this example, MB is equipped with a gateway function. Therefore, communication is also unstable between the Sub bus ECUs of MB and the bus 4.
- The example in the illustration shows that HV has a red background color on the CAN Bus Check screen. This indicates a more significant communication stop. In this case, a communication stop of HV is suspected.
(d) If a communication error is indicated on both the bus 4 and Sub bus on the CAN Bus Check screen, suspect any communication stop displayed for the bus 4 first.
Example: Open in both CAN branch lines of MB on the bus 4
| *a | Background color is red | *b | Not displayed |
HINT:
- In the CAN bus check, it is possible to confirm the communication status of ECUs connected to the bus after connecting the Techstream to the DLC3. As for sub bus, it is possible to confirm which sub bus connected ECUs can communicate with a gateway function equipped ECU on the bus.
- If a gateway function equipped ECU has a communication error, ECUs connected to the gateway function equipped ECU are also affected, and communication stops will be indicated.
- The CAN Bus Check screen in the illustration shows that MB has a gateway function and a communication stop in MB is suspected.
(e) If the CAN Bus Check screen indicates a communication stop only in the sub bus, a communication stop in the sub bus is suspected.
Example: Open in both CAN branch lines of MIR-R on the sub bus
| *a | Background color is red | - | - |
HINT:
- A communication error in a sub bus does not affect the other buses.
- When a gateway function equipped ECU has memorized the ECUs that are connected to the sub bus, if any of the ECUs connected to the gateway function equipped ECU has a communication error, the background color changes to yellow or red. (The displayed name will not disappear.)
(f) If both of the bus 2 main bus lines are open, ECUs or sensors that are located farther away from the central gateway ECU (network gateway ECU) than the open part will be displayed as a communication stop on the CAN Bus Check screen.
(In this case, HVB, R-MGC and ENG background color changes to red.)
| *a | Bus 2 | *b | Bus 4 |
| *c | Sub Bus | *d | V Bus |
| *e | Location of Malfunction | *f | Background color is red |
HINT:
If a communication error occurs in an ECU, it is not displayed on the CAN Bus Check screen even though the ECU is present.
(g) If both of the sub bus main bus lines are open, ECUs that are located farther away from the gateway function equipped ECU than the open part will be displayed as a communication stop on the CAN Bus Check screen.
(In this case, MIR-L background color changes to red.)
| *a | Bus 2 | *b | Bus 4 |
| *c | Sub Bus | *d | V Bus |
| *e | Location of Malfunction | *f | Background color is red |
(h) When any of the following malfunctions occur, CAN communication cannot be established and almost all ECUs and sensors on the bus show a communication error on the CAN Bus Check screen.
Details of Malfunction| Short between CAN lines (CANH and CANL) |
| Short between a CAN line (CANH or CANL) and +B |
| Short between a CAN line (CANH or CANL) and ground |
| Open in a CAN main bus line |
| *a | When any of the following malfunctions occur on the bus 4 | *b | When any of the following malfunctions occur on a sub bus |
| *c | Background color is red | *d | Not displayed |
HINT:
- When a malfunction occurs in the bus, almost all ECUs and sensors on the bus and sub bus indicate a communication error (almost all ECUs are not displayed). As communication with the gateway function equipped ECU that is connected to the bus stops, communication from the ECUs connected to the sub bus that is monitored by the gateway function equipped ECU also stops (these ECUs are not displayed).
- When a malfunction occurs in a sub bus, almost all ECUs connected to the sub bus indicate a communication error.
- A communication error in a sub bus does not affect the other buses.
- The malfunctioning part can be determined by checking for a short circuit between CAN bus lines or between a CAN bus line and ground or +B short using an electrical tester.
(i) If a communication error of all ECUs and sensors is indicated on the CAN Bus Check screen, a communication stop of the V bus (DLC3 - central gateway ECU (network gateway ECU)) is suspected.
Open in both CAN branch lines in the V bus
| *a | Bus 2 | *b | Bus 4 |
| *c | Sub Bus | *d | V Bus |
| *e | Location of Malfunction | *f | Not displayed |
HINT:
When there is no communication between the Techstream and the vehicle, no ECUs or sensors will be displayed.
DTC TABLE BY ECU
HINT:
- In the CAN communication system, the CAN communication DTCs of each ECU can be displayed using the Techstream.
-
If CAN communication system DTCs are output, the malfunction cannot be determined only by the DTCs. Perform troubleshooting according to How to Proceed with Troubleshooting.
Click here
- If there is a malfunction currently, DTCs can be checked by performing steps in the DTC check procedure.
(a) Hybrid Vehicle Control ECU / Techstream Display "Hybrid Control"
Powertrain > Hybrid Control > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
|
*1: Refer to the Hybrid Control System.
Click here *2: Refer to the Hybrid Battery System. Click here | ||||||
| U0100-530 | Lost Communication with ECM/PCM "A" | Communication stop occurs between the hybrid vehicle control ECU and ECM continuously for 0.576 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 1.576 seconds. | The MIL (Malfunction indicator lamp) illuminates. | DTC is stored until it is cleared using the Techstream. |
| U0110-159*1 | Lost Communication with Drive Motor Control Module "A" | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 0.21 second. | - | DTC is stored until it is cleared using the Techstream. |
| U0110-160*1 | ||||||
| U0110-656*1 | ||||||
| U0110-657*1 | ||||||
| U0126-735 | Lost Communication with steering sensor Module | The hybrid vehicle control ECU does not receive data from the steering sensor for 0.72 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 1.72 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0129-527 | Lost Communication with Brake System Control Module | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 4.44 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0129-528 | ||||||
| U0140-146 | Communication Error from Body ECU to HV ECU | Communication stop occurs between the hybrid vehicle control ECU and main body ECU (multiplex network body ECU) continuously for 3.6 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 4.6 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0151-763 | Communication Error from Airbag ECU to HV ECU | Communication stop occurs between the hybrid vehicle control ECU and airbag ECU assembly continuously for 10.6 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 11.6 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0164-827 | Communication Error from A/C ECU to HV ECU | Communication stop occurs between the hybrid vehicle control ECU and air conditioning amplifier assembly continuously for 10.6 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 11.6 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U029A-123*2 | Lost Communication with Hybrid Battery Pack Sensor Module | The response sent to the power management control ECU from the battery smart unit is invalid for 0.52 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 1.02 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U0424-537*1 | Invalid Data Received From HV AC Control Module | The power management control ECU receives an abnormal operation value command from the air conditioning amplifier assembly for 3 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 3.5 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U1107-436 | Lost Communication with Power Management Module | Communication stop occurs between the hybrid vehicle control ECU and certification ECU (smart key ECU assembly) continuously for 3.6 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 4.6 seconds. | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(b) Hybrid Vehicle Control ECU / Techstream Display "Radar Cruise1"
Powertrain > Radar Cruise1 > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Precondition | DTC Check Procedure | Warning Indication in Meter | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0104 | Lost Communication with Driving Support ECU Missing Message | Communication stop occurs between the forward recognition camera and hybrid vehicle control ECU continuously for approximately 2 seconds or more. | All conditions are met:
| Turn the dynamic radar cruise control system on and drive the vehicle approximately 2 seconds speed of 5 km/h (3 mph) or more | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U0122 | Lost Communication with Vehicle Dynamics Control Module Missing Message | Communication stop occurs between the hybrid vehicle control ECU and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 3 seconds or more. | All conditions are met:
| Allow the radar cruise control system (vehicle control mode) to operate for approximately 3 seconds or more. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U0293 | Lost Communication with Hybrid Powertrain Control Module Missing Message | The brake booster with master cylinder assembly (skid control ECU) does not receive data from the hybrid vehicle control ECU assembly for approximately 1 second or more. | All conditions are met:
| Allow the radar cruise control system (vehicle control mode) to operate for approximately 1 second or more. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(c) ECM / Techstream Display "Engine and ECT"
Powertrain > Engine and ECT > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0155 | Lost Communication with Instrument Panel Cluster Control Module (Combination Meter) | Communication stop occurs between the ECM and combination meter assembly continuously for 2.6 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 6 seconds. | - | The DTC remains stored until it is cleared using the Techstream. |
| U0293 | Lost Communication with Hybrid Vehicle Control System | Communication stop occurs between the ECM and hybrid vehicle control ECU continuously for 0.576 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 1.576 seconds. | The MIL (Malfunction indicator lamp) illuminates. | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(d) Brake Booster with Master Cylinder Assembly (Skid Control ECU) / Techstream Display "ABS/VSC/TRAC"
Chassis > ABS/VSC/TRAC > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| EPB*: Electric Parking Brake | ||||||
| U0073 | Control Module Communication Bus Off | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 60 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U0120 | Lost Communication With Starter / Generator Control Module | Communication stop occurs between the brake booster with master cylinder assembly (skid control ECU) and certification ECU (smart key ECU assembly) continuously for approximately 3 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 4 seconds. | ECB warning light illuminates. | DTC is stored until it is cleared using the Techstream. |
| U0123 | Lost Communication With Yaw Rate Sensor Module | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 60 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U0124 | Lost Communication With Lateral Acceleration Sensor Module | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 60 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U0126 | Lost Communication With steering sensor Module | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 60 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U0128 | Lost Communication With EPB* Module | Communication stop occurs between the brake booster with master cylinder assembly (skid control ECU) and parking brake ECU assembly continuously for 1 second or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 2 seconds. | Brake hold standby indicator light illuminates. | DTC is stored until it is cleared using the Techstream. |
| U0293 | Lost Communication With Hybrid Vehicle Control System | Either of the following conditions is met:
| All conditions are met:
| Drive the vehicle for 3 seconds at a speed of 15 km/h (9 mph) or more. |
| DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(e) Combination Meter Assembly / Techstream Display "Combination Meter"
Body Electrical > Combination Meter > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0100 | Lost Communication with ECM/PCM "A" | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 3 seconds. | The MIL (Malfunction indicator lamp) illuminates. | DTC is stored until it is cleared using the Techstream. |
| U0129 | Lost Communication with Brake System Control Module | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 3 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U0131 | Lost Communication with Power Steering Control Module | Communication stop occurs between the combination meter assembly and power steering ECU assembly continuously for 3 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 3 seconds. | The EPS warning light illuminates. | DTC is stored until it is cleared using the Techstream. |
| U0142 | Lost Communication with Body Control Module "B" | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 10 seconds. | The Tire pressure warning light blinks and then illuminates. | DTC is stored until it is cleared using the Techstream. |
| U0151 | Lost Communication with Restraints Control Module | Communication stop occurs between the combination meter assembly and airbag ECU assembly continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 10 seconds. | The SRS warning light illuminates. | DTC is stored until it is cleared using the Techstream. |
| U0163 | Lost Communication With Navigation Control Module | Communication stop occurs between the combination meter assembly and radio receiver assembly continuously for 3 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 3 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0182 | Lost Communication with Lighting Control Module Front | Communication stop occurs between the combination meter assembly and headlight ECU sub-assembly LH continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 10 seconds. | Displays messages on the multi information display. | DTC is stored until it is cleared using the Techstream. |
| U023A | Lost Communication with Front Camera Module | Communication stop occurs between the combination meter assembly and forward recognition camera continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 10 seconds. |
| DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(f) Air Conditioning Amplifier Assembly / Techstream Display "Air Conditioner"
Body Electrical > Air Conditioner > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0100 | Lost Communication With ECM/PCM "A" | Communication stop occurs between the air conditioning amplifier assembly and ECM continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 5 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0131 | Lost Communication With Power Steering Control Module | Communication stop occurs between the air conditioning amplifier assembly and power steering ECU assembly continuously for approximately 3 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 3 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0142 | Lost Communication With Body Control Module "B" | Communication stop occurs between the air conditioning amplifier assembly and main body ECU (multiplex network body ECU) continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 5 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0155 | Lost Communication With Instrument Panel Cluster (IPC) Control Module | Communication stop occurs between the air conditioning amplifier assembly and combination meter assembly continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 5 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0163 | Lost Communication With Navigation Control Module | Communication stop occurs between the air conditioning amplifier assembly and radio receiver assembly continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 5 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0293 | Lost Communication With EV ECU | Communication stop occurs between the air conditioning amplifier assembly and hybrid vehicle control ECU continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 5 seconds. | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(g) Power Steering ECU Assembly / Techstream Display "EMPS"
Chassis > EMPS > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0129 | Lost Communication with Brake System Control Module | Communication stop occurs between the power steering ECU assembly and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 3 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 6 seconds. | The EPS warning light illuminates. | The DTC is stored only while the malfunction is present. |
| U023A | Lost Communication with Front Camera Module | Communication stop occurs between the power steering ECU and forward recognition camera continuously for approximately 2 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 5 seconds. | - | The DTC is stored only while the malfunction is present. |
| U0293 | Lost Communication with Hybrid Control Module | Communication stop occurs between the power steering ECU assembly and hybrid vehicle control ECU continuously for 5 minutes or more. | All conditions are met:
| Drive the vehicle for 5 minutes at a speed of 20 km/h (12 mph) or more. | The EPS warning light illuminates. | The DTC is stored only while the malfunction is present. |
| U1104 | Lost Communication with Driving Support ECU | Communication stop occurs between the power steering ECU and forward recognition camera continuously for approximately 2 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 5 seconds. | - | The DTC is stored only while the malfunction is present. |
HINT:
DTC communication uses the CAN communication system.
(h) Headlight ECU Sub-assembly LH (for Triple Beam Headlight) / Techstream Display "AFS"
Body Electrical > AFS > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
|
*: Refer to the Lighting System.
Click here | ||||||
| U0073 | Control Module Communication Bus OFF | Bus off condition is detected. | All conditions are met:
| Turn the power switch on (IG) and wait at least 3 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0100 | Lost Communication with ECM/PCM "A" | Communication stop occurs between the headlight ECU sub-assembly LH and ECM continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0101 | Lost Communication with TCM | Communication stop occurs between the headlight ECU sub-assembly LH and hybrid vehicle control ECU continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0126 | Lost Communication with steering sensor Module | Communication stop occurs between the headlight ECU sub-assembly LH and steering sensor continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0129 | Lost Communication with Brake System Control Module | Communication stop occurs between the headlight ECU sub-assembly LH and brake booster with master cylinder assembly (skid control ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0142 | Lost Communication with Body Control Module "B" | Communication stop occurs between the headlight ECU sub-assembly LH and main body ECU (multiplex network body ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0155 | Lost Communication with Instrument Panel Cluster (IPC) Control Module | Communication stop occurs between the headlight ECU sub-assembly LH and combination meter assembly continuously for 30 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 33 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U023A | Lost Communication With Image Processing Module "A" | Communication stop occurs between the headlight ECU sub-assembly LH and forward recognition camera continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0293 | Lost Communication with Hybrid Vehicle Control System | Communication stop occurs between the headlight ECU sub-assembly LH and hybrid vehicle control ECU continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U1000* | CAN Communication Failure(Message Registry) | CAN communication malfunction (message register) | The power switch on (IG). | Turn the power switch on (IG). | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(i) Main Body ECU (Multiplex Network Body ECU) / Techstream Display "Main Body"
Body Electrical > Main Body > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0100 | Lost Communication With ECM/PCM "A" | Communication stop occurs between the main body ECU (multiplex network body ECU) and ECM continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0101 | Lost Communication with TCM | Communication stop occurs between the main body ECU (multiplex network body ECU) and hybrid vehicle control ECU continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0120 | Lost Communication With Starter / Generator Control Module | Communication stop occurs between the main body ECU (multiplex network body ECU) and certification ECU (smart key ECU assembly) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0129 | Lost Communication with Brake System Control Module | Communication stop occurs between the main body ECU (multiplex network body ECU) and brake booster with master cylinder assembly (skid control ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0151 | Lost Communication with Restraints Control Module | Communication stop occurs between the main body ECU (multiplex network body ECU) and airbag ECU assembly continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0155 | Lost Communication with Instrument Panel Cluster (IPC) Control Module | Communication stop occurs between the main body ECU (multiplex network body ECU) and combination meter assembly continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0182 | Lost Communication with AFS | Communication stop occurs between the main body ECU (multiplex network body ECU) and headlight ECU sub-assembly LH continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0199 | Lost Communication with "Door Control Module A" | Communication stop occurs between the main body ECU (multiplex network body ECU) and outer mirror control ECU assembly RH continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0200 | Lost Communication with "Door Control Module B" | Communication stop occurs between the main body ECU (multiplex network body ECU) and outer mirror control ECU assembly LH continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0208 | Lost Communication with "Seat Control Module A" | Communication stop occurs between the main body ECU (multiplex network body ECU) and front power seat switch (for driver side) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0230 | Lost Communication with Rear Gate Module | Communication stop occurs between the main body ECU (multiplex network body ECU) and multiplex network door ECU continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U023A | Lost Communication With Image Processing Module "A" | Communication stop occurs between the main body ECU (multiplex network body ECU) and forward recognition camera continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 15 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0293 | Lost Communication with Hybrid Powertrain Control Module | Communication stop occurs between the main body ECU (multiplex network body ECU) and hybrid vehicle control ECU continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0327 | Software Incompatibility with Vehicle Security Control Module | Communication stop occurs between the main body ECU (multiplex network body ECU) and certification ECU (smart key ECU assembly) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U1002 | Lost Communication with Gateway Module | The main body ECU (multiplex network body ECU) detects a problem when communicating with the multiplex tilt and telescopic ECU, outer mirror control ECU assembly RH, outer mirror control ECU assembly LH, front power seat switch (for Driver Side) and the multiplex network door ECU. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U1106 | Lost Communication with Electric Parking Brake Module | Communication stop occurs between the main body ECU (multiplex network body ECU) and parking brake ECU assembly continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U1115 | Lost Communication with Tilt & Telescopic Module | Communication stop occurs between the main body ECU (multiplex network body ECU) and multiplex tilt and telescopic ECU continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U1117 | Lost Communication with Accessory Gateway | Communication stop occurs between the main body ECU (multiplex network body ECU) and bus buffer ECU continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(j) Certification ECU (Smart Key ECU Assembly) / Techstream Display "Smart Access"
Body Electrical > Smart Access > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0100 | Lost Communication With ECM/PCM "A" | Communication stop occurs between the certification ECU (smart key ECU assembly) and ECM continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (ACC) or on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0142 | Lost Communication with Body Control Module "B" | Communication stop occurs between the certification ECU (smart key ECU assembly) and main body ECU (multiplex network body ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (ACC) or on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0155 | Lost Communication with Instrument Panel Cluster (IPC) Control Module | Communication stop occurs between the certification ECU (smart key ECU assembly) and combination meter assembly continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (ACC) or on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0293 | Lost Communication With Hybrid Vehicle Control System | Communication stop occurs between the certification ECU (smart key ECU assembly) and hybrid vehicle control ECU continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (ACC) or on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U1117 | Lost Communication with Accessory Gateway | Communication stop occurs between the certification ECU (smart key ECU assembly) and bus buffer ECU continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (ACC) or on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(k) Certification ECU (Smart Key ECU Assembly) / Techstream Display "Power Source Control"
Body Electrical > Power Source Control > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0140 | Lost Communication with Body Control Module | Communication stop occurs between the certification ECU (smart key ECU assembly) and main body ECU (multiplex network body ECU) continuously for 3 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 3 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0155 | Lost Communication with Instrument Panel Cluster (IPC) Control Module | Communication stop occurs between the certification ECU (smart key ECU assembly) and combination meter assembly continuously for 3.1 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 3.1 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0293 | HV ECU Communication | Communication stop occurs between the certification ECU (smart key ECU assembly) and hybrid vehicle control ECU continuously for 3.1 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 3.1 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U1117 | Lost Communication with Accessory Gateway | Communication stop occurs between the certification ECU (smart key ECU assembly) and bus buffer ECU continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 5 seconds. | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(l) Radio Receiver Assembly / Techstream Display "Navigation System"
Body Electrical > Navigation System > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0073 | Sending Malfunction (Navigation to APGS) | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 3 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0100 | Engine ECU Communication | Communication stop occurs between the radio receiver assembly and ECM continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 14 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0129 | VSC(ECB*)ECU Communication | Communication stop occurs between the radio receiver assembly and brake booster with master cylinder assembly (skid control ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0132 | Air Suspension ECU Communication | Communication stop occurs between the radio receiver assembly and absorber control ECU at vehicle speed of 20 km/h (12 mph) or more continuously for 10 seconds or more. | All conditions are met:
| Drive the vehicle for 13 seconds or more at a speed of 20 km/h (12 mph) or more. | - | DTC is stored until it is cleared using the Techstream. |
| U0140 | Lost Communication with Body Control Module | Communication stop occurs between the radio receiver assembly and main body ECU (multiplex network body ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0155 | Meter ECU Communication | Communication stop occurs between the radio receiver assembly and combination meter assembly continuously for 30 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 33 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0164 | Air Conditioner ECU Communication | Communication stop occurs between the radio receiver assembly and air conditioning amplifier assembly continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0198 | Lost Communication with Telematic Control Module | Communication stop occurs between the radio receiver assembly and DCM (telematics transceiver) continuously for 3 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 6 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U023B | Lost Communication with Image Processing Module "B" | Communication stop occurs between the radio receiver assembly and parking assist ECU continuously for approximately 12 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 15 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0265 | Lost Communication with Image Processing Sensor A | Communication stop occurs between the radio receiver assembly and rear television camera assembly continuously for approximately 12 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 15 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0293 | HV ECU Communication | Communication stop occurs between the radio receiver assembly and hybrid vehicle control ECU continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 14 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U1110 | Clearance Sonar ECU Communication | Communication stop occurs between the radio receiver assembly and clearance warning ECU assembly continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
HINT:
- ECB*: Electronically Controlled Brake System
- DTC communication uses the CAN communication system.
(m) DCM (Telematics Transceiver) / Techstream Display "Telematics"
Body Electrical > Telematics > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U014087 | Lost Communication with Body Control Module Missing Message | Communication stop occurs between the DCM (telematics transceiver) and main body ECU (multiplex network body ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | The DTC is stored only while the malfunction is present. |
| U015587 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message | Communication stop occurs between the DCM (telematics transceiver) and combination meter assembly continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | The DTC is stored only while the malfunction is present. |
| U016387 | Lost Communication with Navigation Control Module Missing Message | Communication stop occurs between the DCM (telematics transceiver) and radio receiver assembly continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | The DTC is stored only while the malfunction is present. |
HINT:
DTC communication uses the CAN communication system.
(n) Clearance Warning ECU Assembly (w/ Intuitive Parking Assist System) / Techstream Display "Advanced Parking Guidance/ICS/Intuitive P/A"
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
|
*: Refer to Intuitive Parking Assist System
Click here | ||||||
| U0073 | Control Module Communication Bus "A" Off | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U0100 | Lost Communication with ECM/PCM "A" | Communication stop occurs between the clearance warning ECU assembly and ECM continuously for approximately 6 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 9 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U0124 | Lost Communication with Lateral Acceleration Sensor Module | Communication stop occurs between the clearance warning ECU assembly and airbag ECU assembly continuously for approximately 1 second or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 4 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U0126 | Lost Communication With steering sensor Module | Communication stop occurs between the clearance warning ECU assembly and steering sensor continuously for approximately 6 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 9 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U0129 | Lost Communication with Brake System Control Module | Communication stop occurs between the clearance warning ECU assembly and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 8 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U0140 | Lost Communication with Body Control Module | Communication stop occurs between the clearance warning ECU assembly and main body ECU (multiplex network body ECU) continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0155 | Lost Communication With Instrument Panel Cluster (IPC) Control Module | Communication stop occurs between the clearance warning ECU assembly and combination meter assembly continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0164 | Lost Communication with HVAC Control Module | Communication stop occurs between the clearance warning ECU assembly and air conditioning amplifier assembly continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0293 | Lost Communication with Hybrid Powertrain Control Module | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 9 seconds. | Displays messages on the multi information display. | DTC is stored until it is cleared using the Techstream. |
| U1000* | CAN Communication Failure(Message Registry) | A CAN communication function malfunction is detected in the clearance warning ECU assembly. | All conditions are met:
| Turn the power switch on (IG) and wait at least 3 seconds. | Displays messages on the multi information display. | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(o) Parking Assist ECU (w/ Panoramic View Monitor System) / Techstream Display "Panoramic View Monitor"
Chassis > Panoramic View Monitor > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
|
*: Refer to Panoramic View Monitor System
Click here | ||||||
| U0073 | Control Module Communication Bus Off | The parking assist ECU is unable to send or receive data 10 times consecutively. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0100 | Lost Communication with ECM/PCM "A" | Communication stop occurs between the parking assist ECU and ECM continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0126 | Lost Communication with steering sensor Module | Communication stop occurs between the parking assist ECU and steering sensor continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0129 | Lost Communication with Brake System Control Module | Communication stop occurs between the parking assist ECU and brake booster with master cylinder assembly (skid control ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0140 | Lost Communication with Body Control Module | Communication stop occurs between the parking assist ECU and main body ECU (multiplex network body ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0163 | Lost Communication with Navigation Control Module | Communication stop occurs between the parking assist ECU and radio receiver assembly continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0233 | Lost Communication with Blind Spot Monitor Master Module | Communication stop occurs between the parking assist ECU and blind spot monitor sensor LH continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0265 | Lost Communication with Image Processing Sensor A | Communication stop occurs between the parking assist ECU and rear television camera assembly continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U1000* | CAN Communication Failure(Message Registry) | A CAN communication function malfunction is detected in the parking assist ECU. | The power switch is on (IG). | The power switch is on (IG). | - | DTC is stored until it is cleared using the Techstream. |
| U1110 | Lost Communication with Clearance Sonar Module | Communication stop occurs between the parking assist ECU and clearance warning ECU assembly continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 13 seconds. | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(p) Multiplex Tilt and Telescopic ECU (for Power Tilt and Power Telescopic Steering Column) / Techstream Display "Tilt&Telescopic"
Body Electrical > Tilt&Telescopic > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
|
*: Refer to Power Tilt and Power Telescopic Steering Column System
Click here | ||||||
| U0142 | Lost Communication with Body ECU | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | The DTC is stored only while the malfunction is present. |
| U0208 | Lost Communication with D-Seat ECU | Communication stop occurs between the multiplex tilt and telescopic ECU and front power seat switch (for driver side) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | The DTC is stored only while the malfunction is present. |
| B2624* | Vehicles Speed | Either of the following conditions is met:
| All conditions are met:
| Drive the vehicle for 20 seconds or more at a speed of 4 to 10 km/h (2 to 6 mph). | - | The DTC is stored only while the malfunction is present. |
HINT:
DTC communication uses the CAN communication system.
(q) Outer Mirror Control ECU Assembly RH (w/ Memory) / Techstream Display "Mirror R"
Body Electrical > Mirror R > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0142 | Lost Communication With Body Control Module "B" | Communication stop occurs between the outer mirror control ECU assembly RH and main body ECU (multiplex network body ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(r) Outer Mirror Control ECU Assembly LH (w/ Memory) / Techstream Display "Mirror L"
Body Electrical > Mirror L > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0142 | Lost Communication With Body Control Module "B" | Communication stop occurs between the outer mirror control ECU assembly LH and main body ECU (multiplex network body ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(s) Parking Brake ECU Assembly / Techstream Display "Electric Parking Brake"
Chassis > Electric Parking Brake > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0124 | Lost Communication With Lateral Acceleration Sensor Module | Communication stop occurs between the parking brake ECU assembly and brake booster with master cylinder assembly (skid control ECU) or parking brake ECU assembly and airbag ECU assembly. | All conditions are met:
| Drive the vehicle at a speed of 7 km/h (4 mph) or more. | Displays messages on the multi information display. | DTC is stored until it is cleared using the Techstream. |
| U0129 | Lost Communication With Brake System Control Module | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 10 seconds. | Displays messages on the multi information display. | DTC is stored until it is cleared using the Techstream. |
| U0293 | Lost Communication With Hybrid Vehicle Control System | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 10 seconds. | Displays messages on the multi information display. | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(t) Blind Spot Monitor Sensor LH (w/ Blind Spot Monitor System) / Techstream Display "Blind Spot Monitor Master"
Body Electrical > Blind Spot Monitor Master > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
|
*: Refer to Blind Spot Monitor System.
Click here | ||||||
| U0126 | Lost Communication with steering sensor Module | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 12 seconds. | Displays messages on the multi information display. | DTC is stored until it is cleared using the Techstream. |
| U0129 | Lost Communication with Brake System Control Module | Communication stop occurs between the blind spot monitor sensor LH and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 3 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 5 seconds. | Displays messages on the multi information display. | DTC is stored until it is cleared using the Techstream. |
| U0142 | Lost Communication with Body Control Module "B" | Communication stop occurs between the blind spot monitor sensor LH and main body ECU (multiplex network body ECU) continuously for approximately 11 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 12 seconds. | Displays messages on the multi information display. | DTC is stored until it is cleared using the Techstream. |
| U0232* | Lost Communication with Blind Spot Monitor Slave Module | Communication stop occurs between the blind spot monitor sensor LH and blind spot monitor sensor RH continuously for approximately 12 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and turn the blind spot monitor main switch on, and then wait approximately 13 seconds or more. | Displays messages on the multi information display. | DTC is stored until it is cleared using the Techstream. |
| U0293 | Lost Communication with HV ECU | Communication stop occurs between the blind spot monitor sensor LH and hybrid vehicle control ECU continuously for approximately 11 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 12 seconds. | Displays messages on the multi information display. | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(u) Forward Recognition Camera (w/ Pre-collision System) / Techstream Display "Radar Cruise2"
Powertrain > Radar Cruise2 > Trouble CodesHINT:
DTC communication uses the CAN communication system.
| DTC No. | Detection Item | DTC Detection Condition | DTC Detection Precondition | DTC Check Procedure | Warning Indication in Meter | DTC Storage Method |
|---|---|---|---|---|---|---|
|
*: Refer to Dynamic Radar Cruise Control System
Click here | ||||||
| U012587 | Lost Communication with Multi-axis Acceleration Sensor Module Missing Message | Communication stop occurs between the forward recognition camera and airbag ECU assembly continuously for approximately 1 second or more. | All conditions are met:
| Drive the vehicle for approximately 4 seconds or more at a speed of more than 0 km/h (0 mph). | Displays messages on the multi-information display. | The DTC remains stored until it is cleared using the Techstream. |
| U012687 | Lost Communication with steering sensor Module Missing Message | Communication stop occurs between the forward recognition camera and steering sensor continuously for approximately 1 second or more. | All conditions are met:
| Drive the vehicle for approximately 4 seconds or more at a speed of more than 0 km/h (0 mph). | Displays messages on the multi-information display. | The DTC remains stored until it is cleared using the Techstream. |
| U012987 | Lost Communication with Brake System Control Module Missing Message | Communication stop occurs between the forward recognition camera and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 2 seconds or more. | All conditions are met:
| Drive the vehicle for approximately 5 seconds or more at a speed of more than 0 km/h (0 mph). | Displays messages on the multi-information display. | The DTC remains stored until it is cleared using the Techstream. |
| U015587 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message | Communication stop occurs between the forward recognition camera and combination meter assembly continuously for 5 seconds or more. | All conditions are met:
| Drive the vehicle for approximately 8 seconds or more at a speed of more than 0 km/h (0 mph). | Displays messages on the multi-information display. | The DTC remains stored until it is cleared using the Techstream. |
| U023587* | Lost Communication with Control Front Distance Range Sensor Missing Message | The forward recognition camera does not receive data from the millimeter wave radar sensor assembly for approximately 2 seconds or more. | All conditions are met:
| With the dynamic radar cruise operating, drive the vehicle for approximately 5 seconds or more. | Displays messages on the multi-information display. | The DTC remains stored until it is cleared using the Techstream. |
| U029387 | Lost Communication with Hybrid Powertrain Control Module Missing Message | Communication stop occurs between the forward recognition camera and hybrid vehicle control ECU assembly continuously for approximately 1 second or more. | All conditions are met:
| Drive the vehicle for approximately 4 seconds or more at a speed of more than 0 km/h (0 mph). | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U030051* | Internal Control Module Software Incompatibility Not Programmed | The control system information sent from the hybrid vehicle control ECU assembly remains undefined by the forward recognition camera for 3 seconds or more. | All conditions are met:
| With the dynamic radar cruise operating, drive the vehicle for approximately 6 seconds or more. | Displays messages on the multi-information display. | The DTC remains stored until it is cleared using the Techstream. |
| U030057* | Internal Control Module Software Incompatibility Invalid / Incompatible Software Component | The vehicle information sent from the hybrid vehicle control ECU assembly does not match that stored in the forward recognition camera for 1 second or more. | All conditions are met:
| With the dynamic radar cruise operating, drive the vehicle for approximately 4 seconds or more. | Displays messages on the multi-information display. | The DTC remains stored until it is cleared using the Techstream. |
| U031851* | Software Incompatibility with Brake System Control Module Not Programmed | The vehicle information sent from brake booster with master cylinder assembly (skid control ECU) remains undefined by the forward recognition camera for 3 seconds or more. | All conditions are met:
| With the dynamic radar cruise operating, drive the vehicle for approximately 6 seconds or more. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U031857* | Software Incompatibility with Brake System Control Module Invalid / Incompatible Software Component | The vehicle information sent from the brake booster with master cylinder assembly (skid control ECU) does not match that stored in the forward recognition camera for 2 seconds or more. | All conditions are met:
| With the dynamic radar cruise operating, drive the vehicle for approximately 5 seconds or more. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U032251* | Software Incompatibility with Body Control Module Not Programmed | The vehicle information sent from main body ECU (multiplex network body ECU) remains undefined by the forward recognition camera for 6 seconds or more. | All conditions are met:
| With the dynamic radar cruise operating, drive the vehicle for approximately 9 seconds or more. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U032257* | Software Incompatibility with Body Control Module Invalid / Incompatible Software Component | The vehicle information sent from the main body ECU (multiplex network body ECU) does not match that stored in the forward recognition camera for 4 seconds or more. | All conditions are met:
| With the dynamic radar cruise operating, drive the vehicle for approximately 7 seconds or more. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U059481* | Invalid Data Received from Hybrid/EV Powertrain Control Module Invalid Serial Data Received | The hybrid vehicle control ECU assembly does not receive data from the forward recognition camera for approximately 2 seconds or more. | All conditions are met:
| With the dynamic radar cruise operating, drive the vehicle for approximately 5 seconds or more. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U110687 | Lost Communication with Electric Parking Brake Module Missing Message | Communication stop occurs between the forward recognition camera and parking brake ECU assembly continuously for approximately 2 seconds or more. | All conditions are met:
| Drive the vehicle for approximately 8 seconds or more at a speed of more than 0 km/h (0 mph). | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
(v) Forward Recognition Camera / Techstream Display "Pre-Collision System" (w/ Pre-collision System)
Body Electrical > Pre-Collision System > Trouble CodesHINT:
DTC communication uses the CAN communication system.
| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Indication in Meter | DTC Storage Method |
|---|---|---|---|---|---|---|
|
*: Refer to Pre-collision System
Click here | ||||||
| U012587 | Lost Communication with Multi-axis Acceleration Sensor Module Missing Message | Communication stop occurs between the forward recognition camera and airbag ECU assembly continuously for approximately 1 second or more. | All conditions are met:
| Drive the vehicle for approximately 4 seconds or more at a speed of 5 km/h (3 mph) or more. |
| DTC is stored until it is cleared using the Techstream. |
| U012687 | Lost Communication with steering sensor Module Missing Message | Communication stop occurs between the forward recognition camera and steering sensor continuously for approximately 1 second or more. | All conditions are met:
| Drive the vehicle for approximately 4 seconds or more at a speed of 5 km/h (3 mph) or more. |
| DTC is stored until it is cleared using the Techstream. |
| U012987 | Lost Communication with Brake System Control Module Missing Message | Communication stop occurs between the forward recognition camera and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 1 second or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 4 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U023587* | Lost Communication with Cruise Control Front Distance Range Sensor Single Sensor or Center Missing Message | Communication stop occurs between the forward recognition camera and millimeter wave radar sensor assembly continuously for approximately 2 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 5 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U023A87* | Lost Communication with Image Processing Module "A" Missing Message | The forward recognition camera receives abnormal data from the brake booster with master cylinder assembly (skid control ECU) for approximately 3 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 5 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U029387 | Lost Communication with Hybrid/EV Powertrain Control Module Missing Message | Communication stop occurs between the forward recognition camera and hybrid vehicle control ECU assembly continuously for approximately 3 seconds or more. | All conditions are met:
| Drive the vehicle for approximately 6 seconds or more at a speed of 5 km/h (3 mph) or more. |
| DTC is stored until it is cleared using the Techstream. |
| U030051* | Internal Control Module Software Incompatibility Not Programmed | The vehicle information sent from the hybrid vehicle control ECU assembly remains undefined by the forward recognition camera continuously for approximately 3 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 6 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U030057* | Internal Control Module Software Incompatibility Invalid/Incompatible Software Component | The vehicle information sent from the hybrid vehicle control ECU assembly does not match that stored in the forward recognition camera for 1 second or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 4 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U041881* | Invalid Data Received from Brake System Control Module Invalid Serial Data Received | The forward recognition camera continuously receives a brake system control malfunction signal from the brake booster with master cylinder assembly (skid control ECU) for approximately 1 second or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 4 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U059481* | Invalid Data Received from Hybrid/EV Powertrain Control Module Invalid Serial Data Received | The hybrid vehicle control ECU assembly does not receive data from the forward recognition camera for approximately 2 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 3 seconds. |
| DTC is stored until it is cleared using the Techstream. |
(w) Forward Recognition Camera / Techstream Display "Lane Control" (w/ Pre-collision System)
Chassis > Lane Control > Trouble CodesHINT:
DTC communication uses the CAN communication system.
| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Indication in Meter | DTC Storage Method |
|---|---|---|---|---|---|---|
|
*: Refer to Lane Tracing Assist System
Click here | ||||||
| U012587 | Lost Communication with Multi-axis Acceleration Sensor Module Missing Message | Communication stop occurs between the forward recognition camera and airbag ECU assembly continuously for 5 seconds or more. | All conditions are met:
| Drive the vehicle for 8 seconds or more at a speed of 5 km/h (3 mph) or more. |
| DTC is stored until it is cleared using the Techstream. |
| U012687 | Lost Communication with steering sensor Module Missing Message | Communication stop occurs between the forward recognition camera and steering sensor continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U012987 | Lost Communication with Brake System Control Module Missing Message | Communication stop occurs between the forward recognition camera and brake booster with master cylinder assembly (skid control ECU) continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U013187 | Lost Communication with Power Steering Control Module Missing Message | Communication stop occurs between the forward recognition camera and power steering ECU assembly continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U015587 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message | Communication stop occurs between the forward recognition camera and combination meter assembly continuously for 50 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 53 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U023587 | Lost Communication with Cruise Control Front Distance Range Sensor Single Sensor or Center Missing Message | Communication stop occurs between the forward recognition camera and millimeter wave radar sensor assembly continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U029387 | Lost Communication with Hybrid/EV Powertrain Control Module Missing Message | Communication stop occurs between the forward recognition camera and hybrid vehicle control ECU assembly continuously for 5 seconds or more. | All conditions are met:
| Drive the vehicle for 8 seconds or more at a speed of 5 km/h (3 mph) or more. |
| DTC is stored until it is cleared using the Techstream. |
| U030051* | Internal Control Module Software Incompatibility Not Programmed | The vehicle information sent from the hybrid vehicle control ECU assembly remains undefined by the forward recognition camera. | All conditions are met:
| Turn the LTA main switch on and wait for at least approximately 3 seconds. |
| DTC is stored until it is cleared using the Techstream. |
| U030057* | Internal Control Module Software Incompatibility Invalid/Incompatible Software Component | The vehicle information sent from the hybrid vehicle control ECU assembly does not match that stored in the forward recognition camera for 5 seconds or more. | All conditions are met:
| Turn the LTA main switch on and wait for at least approximately 8 seconds. |
| DTC is stored until it is cleared using the Techstream. |
(x) Forward Recognition Camera / Techstream Display "Road Sign Assist" (w/ Road Sign Assist System)
Body Electrical > Road Sign Assist > Trouble CodesHINT:
DTC communication uses the CAN communication system.
| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Indication in Meter | DTC Storage Method |
|---|---|---|---|---|---|---|
| U012587 | Lost Communication with Multi-axis Acceleration Sensor Module Missing Message | Communication stop occurs between the forward recognition camera and airbag ECU assembly continuously for 5 seconds or more. | All conditions are met:
| Drive the vehicle for 8 seconds or more at a speed of 1 km/h (1 mph) or more. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U012987 | Lost Communication with Brake System Control Module Missing Message | Communication stop occurs between the forward recognition camera and brake booster with master cylinder assembly (skid control ECU) continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U014087 | Lost Communication with Body Control Module Missing Message | Communication stop occurs between the forward recognition camera and main body ECU (multiplex network body ECU) continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U015587 | Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message | Communication stop occurs between the forward recognition camera and combination meter assembly continuously for 50 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 53 seconds. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U029387 | Lost Communication with Hybrid/EV Powertrain Control Module Missing Message | Communication stop occurs between the forward recognition camera and hybrid vehicle control ECU assembly continuously for 5 seconds or more. | All conditions are met:
| Drive the vehicle for 8 seconds or more at a speed of 1 km/h (1 mph) or more. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
(y) Forward Recognition Camera / Techstream Display "Front Recognition Camera (Front Lighting Control)" (w/ Pre-collision System)
Chassis > Front Recognition Camera > Trouble CodesHINT:
DTC communication uses the CAN communication system.
| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Indication in Meter | DTC Storage Method |
|---|---|---|---|---|---|---|
|
*: Refer to Lighting System
Click here | ||||||
| U012587 | Lost Communication with Multi-axis Acceleration Sensor Module Missing Message | Communication stop occurs between the forward recognition camera and airbag ECU assembly continuously for 5 seconds or more. | All conditions are met:
| Drive the vehicle for 7 seconds or more at a speed of 1 km/h (1 mph) or more. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U012987 | Lost Communication with Brake System Control Module Missing Message | Communication stop occurs between the forward recognition camera and brake booster with master cylinder assembly (skid control ECU) continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 7 seconds. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U014087 | Lost Communication with Body Control Module Missing Message | Communication stop occurs between the forward recognition camera and main body ECU (multiplex network body ECU) continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 7 seconds. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U023587* | Lost Communication with Cruise Control Front Distance Range Sensor Single Sensor or Center Missing Message | Communication stop occurs between the forward recognition camera and millimeter wave radar sensor assembly continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 7 seconds. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U029387 | Lost Communication with Hybrid/EV Powertrain Control Module Missing Message | Communication stop occurs between the forward recognition camera and hybrid vehicle control ECU assembly continuously for 5 seconds or more. | All conditions are met:
| Drive the vehicle for 7 seconds or more at a speed of 1 km/h (1 mph) or more. | Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
(z) Forward Recognition Camera / Techstream Display "Front Recognition Camera" (w/ Pre-collision System)
Chassis > Front Recognition Camera > Trouble CodesHINT:
DTC communication uses the CAN communication system.
| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Indication in Meter | DTC Storage Method |
|---|---|---|---|---|---|---|
|
*: Refer to Front Camera System
Click here | ||||||
| U012587 | Lost Communication with Multi-axis Acceleration Sensor Module Missing Message | Communication stop occurs between the forward recognition camera and airbag ECU assembly continuously for 5 seconds or more. | All conditions are met:
| Drive the vehicle for 8 seconds or more at a speed of 1 km/h (1 mph) or more. | - | DTC is stored until it is cleared using the Techstream. |
| U012687 | Lost Communication with steering sensor Module Missing Message | Communication stop occurs between the forward recognition camera and steering sensor continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U012987 | Lost Communication with Brake System Control Module Missing Message | Communication stop occurs between the forward recognition camera and brake booster with master cylinder assembly (skid control ECU) continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U014087 | Lost Communication with Body Control Module Missing Message | Communication stop occurs between the forward recognition camera and main body ECU (multiplex network body ECU) continuously for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U029387 | Lost Communication with Hybrid/EV Powertrain Control Module Missing Message | Communication stop occurs between the forward recognition camera and hybrid vehicle control ECU assembly continuously for 5 seconds or more. | All conditions are met:
| Drive the vehicle for 8 seconds or more at a speed of 1 km/h (1 mph) or more. | - | DTC is stored until it is cleared using the Techstream. |
| U030051* | Internal Control Module Software Incompatibility Not Programmed | The vehicle information sent from the hybrid vehicle control ECU assembly remains undefined by the forward recognition camera for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U030057* | Internal Control Module Software Incompatibility Invalid/Incompatible Software Component | The vehicle information sent from the hybrid vehicle control ECU assembly does not match that stored in the forward recognition camera for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U032251* | Software Incompatibility with Body Control Module Not Programmed | The vehicle information sent from the main body ECU (multiplex network body ECU) remains undefined by the forward recognition camera for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U032257* | Software Incompatibility with Body Control Module Invalid/Incompatible Software Component | The vehicle information sent from the main body ECU (multiplex network body ECU) does not match that stored in the forward recognition camera for 5 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 8 seconds. | - | DTC is stored until it is cleared using the Techstream. |
(aa) Millimeter Wave Radar Sensor Assembly / Techstream Display "Front Radar Sensor" (w/ Pre-collision System)
Body Electrical > Front Radar Sensor > Trouble CodesHINT:
This ECU uses the CAN communication system for DTC communication.
| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method | |
|---|---|---|---|---|---|---|---|
| Indication in Meter | Multi-information Display | ||||||
|
*: Refer to Front Radar Sensor System
Click here | |||||||
| U010487* | Lost Communication with Cruise Control Module Missing Message | The millimeter wave radar sensor assembly does not receive data from the forward recognition camera for approximately 1 second or more. | All conditions are met:
| Turn the power switch on (IG) and wait for at least approximately 2 seconds. |
| Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
| U030557* | Software Incompatibility with Cruise Control Module Invalid / Incompatible Software Component | The control system information sent from the forward recognition camera does not match that stored in the millimeter wave radar sensor assembly for 7 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait for at least approximately 8 seconds. |
| Displays messages on the multi-information display. | DTC is stored until it is cleared using the Techstream. |
(ab) Stereo Component Equalizer Assembly (w/ ASC System) / Techstream Display "ASC"
Body Electrical > ASC > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0129 | Lost Communication With Brake System Control Module | Communication stop occurs between the stereo component equalizer assembly and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 2 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 5 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0142 | Lost Communication With Body Control Module "B" | Communication stop occurs between the stereo component equalizer assembly and main body ECU (multiplex network body ECU) continuously for approximately 4 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 7 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0293 | Lost Communication With Hybrid Powertrain Control Module | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least approximately 9 seconds. | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(ac) Multiplex Network Door ECU (w/ Power Back Door System) / Techstream Display "Back Door"
Body Electrical > Back Door > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0101 | Lost Communication with TCM | Communication stop occurs between the multiplex network door ECU and hybrid vehicle control ECU continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 10 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0122 | Lost Communication with Vehicle Dynamics Control Module | Communication stop occurs between the multiplex network door ECU and brake booster with master cylinder assembly (skid control ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 10 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0142 | Lost Communication with Body Control Module "B" | Communication stop occurs between the multiplex network door ECU and main body ECU (multiplex network body ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 10 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0155 | Lost Communication with Instrument Panel Cluster (IPC) Control Module | Communication stop occurs between the multiplex network door ECU and combination meter assembly continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 10 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0327 | Lost Communication with Vehicle Security Control Module | Communication stop occurs between the multiplex network door ECU and certification ECU (smart key ECU assembly) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U1117 | Lost Communication with Accessory Gateway | Communication stop occurs between the multiplex network door ECU and bus buffer ECU continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 10 seconds. | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(ad) Meter Mirror Sub-assembly (w/ Headup Display) / Techstream Display "Head Up Display"
Body Electrical > Head Up Display > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0100 | Lost Communication with ECM/PCM | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 3 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0142 | Lost Communication with Body Control Module | Either of the following conditions is met:
| All conditions are met:
| Turn the power switch on (IG) and wait at least 10 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U023A | Lost Communication with Image Processing Module "A" | Communication stop occurs between the meter mirror sub-assembly and forward recognition camera continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 10 seconds. | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(ae) Rear Television Camera Assembly / Techstream Display "Parking Assist Camera"
Chassis > Parking Assist Camera > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0100 | Lost Communication with ECM/PCM "A" | Communication stop occurs between the rear television camera assembly and ECM continuously for 11 seconds or more. | 3 seconds or more elapse after the power switch is on (IG). | Turn the power switch on (IG) and wait at least 14 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0126 | Lost Communication with steering sensor Module | Communication stop occurs between the rear television camera assembly and steering sensor continuously for 11 seconds or more. | 3 seconds or more elapse after the power switch is on (IG). | Turn the power switch on (IG) and wait at least 14 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0140 | Lost Communication with Body Control Module | Communication stop occurs between the rear television camera assembly and main body ECU (multiplex network body ECU) continuously for 11 seconds or more. | 3 seconds or more elapse after the power switch is on (IG). | Turn the power switch on (IG) and wait at least 14 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0163 | Lost Communication with Navigation Control Module | Communication stop occurs between the rear television camera assembly and radio receiver assembly continuously for 11 seconds or more. | 3 seconds or more elapse after the power switch is on (ACC). | Turn the power switch on (ACC) and wait at least 14 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0233 | Lost Communication with Blind Spot Monitor Master Module | Communication stop occurs between the rear television camera assembly and blind spot monitor sensor LH continuously for 11 seconds or more. | 3 seconds or more elapse after the power switch is on (IG). | Turn the power switch on (IG) and wait at least 14 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U1110 | Lost Communication with Clearance Sonar Module | Communication stop occurs between the rear television camera assembly and clearance warning ECU assembly continuously for 11 seconds or more. | 3 seconds or more elapse after the power switch is on (IG). | Turn the power switch on (IG) and wait at least 14 seconds. | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(af) Absorber Control ECU (w/ Adaptive Variable Suspension System) / Techstream Display "Air suspension"
| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method |
|---|---|---|---|---|---|---|
| U0101 | Lost Communication with TCM | Communication stop occurs between the absorber control ECU and hybrid vehicle control ECU continuously for 6 seconds or more. | All conditions are met:
| Drive the vehicle for 7 seconds or more at a speed of 30 km/h (18 mph) or more. | - | DTC is stored until it is cleared using the Techstream. |
| U0122 | Lost Communication with Vehicle Dynamics Control Module | Communication stop occurs between the absorber control ECU and brake booster with master cylinder assembly (skid control ECU) continuously for 3 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 5 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0124 | Lost Communication with Lateral Acceleration Sensor Module | Communication stop occurs between the absorber control ECU and airbag ECU assembly continuously for 3 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 4 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0126 | Lost Communication with Steering Angle Sensor Module | Communication stop occurs between the absorber control ECU and steering sensor continuously for 3 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 4 seconds. | - | DTC is stored until it is cleared using the Techstream. |
| U0293 | Lost Communication with Hybrid Vehicle Control System | Communication stop occurs between the absorber control ECU and hybrid vehicle control ECU continuously for 3 seconds or more. | All conditions are met:
| Drive the vehicle for 4 seconds or more at a speed of 30 km/h (18 mph) or more. | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(ag) Vehicle Approaching Speaker Controller / Techstream Display "Vehicle Proximity Notification System"
Body Electrical > Vehicle Proximity Notification System > Trouble Codes| DTC | Detection Item | DTC Detection Condition | DTC Detection Pre-condition | DTC Check Procedure | Warning Displayed | DTC Storage Method | |
|---|---|---|---|---|---|---|---|
| Indication in Meter | Multi-information Display | ||||||
| U0129 | Lost Communication with Brake System Control Module | Communication stop occurs between the vehicle approaching speaker controller and brake booster with master cylinder assembly (skid control ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | - | DTC is stored until it is cleared using the Techstream. |
| U0140 | Lost Communication with Body Control Module | Communication stop occurs between the vehicle approaching speaker controller and main body ECU (multiplex network body ECU) continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | - | DTC is stored until it is cleared using the Techstream. |
| U0293 | Lost Communication with Hybrid/EV Powertrain Control Module | Communication stop occurs between the vehicle approaching speaker controller and hybrid vehicle control ECU continuously for 10 seconds or more. | All conditions are met:
| Turn the power switch on (IG) and wait at least 20 seconds. | - | - | DTC is stored until it is cleared using the Techstream. |
HINT:
DTC communication uses the CAN communication system.
(ah) Airbag ECU Assembly
HINT:
The airbag ECU assembly is connected to the CAN communication system but CAN communication DTCs are not stored.
(ai) Steering sensor
HINT:
The steering sensor is connected to the CAN communication system but CAN communication DTCs are not stored.
(aj) Front Power Seat Switch (for Driver Side) (w/ Memory)
HINT:
The front power seat switch (for driver side) is connected to the CAN communication system but CAN communication DTCs are not stored.
(ak) Central Gateway ECU (Network Gateway ECU)
HINT:
The central gateway ECU (network gateway ECU) is connected to the CAN communication system but CAN communication DTCs are not stored.
CAN BUS WAVEFORMS
HINT:
- The following waveforms are measured between terminals CANH and GND, and terminals CANL and GND of the central gateway ECU (network gateway ECU). (Use this as a reference for diagnosis of CAN communication lines.)
-
When malfunctions in multiple ECUs are suspected based on the CAN bus check and DTCs checked using the Techstream, check the resistance of the CAN bus using an ohmmeter first. If no problems are found, check the following waveforms.
Click here
- If a waveform is not similar to one of the following 3 patterns (Group 1), then an open in a CAN main bus line, an open in a CAN branch line, or a short between a CAN line (CANH or CANL) and ground is suspected (Group 2).
- Wiggle the connector and wire harness to check if the waveform changes.
(a) CAN bus waveforms (Group 1)
(1) Normal waveform
(2) Open in both of the lines (CANH and CANL) of a CAN branch
HINT:
- Waveforms (waveforms shown using dotted lines) are not present from an ECU or sensor connected to a CAN branch with an open circuit in both lines. (Waveforms from other ECUs or sensors are normal.)
- Because this waveform is similar to a normal waveform, instead of using the waveform, the malfunctioning part can be narrowed down by performing a CAN bus check.
(3) Short between the CAN bus lines (CANH and CANL)
HINT:
- Waveforms disappear.
- If the malfunction is in an ECU, disconnecting the ECU will change the waveform. If the waveform does not change, a malfunction in the wire harness is suspected.
(b) CAN bus waveforms (reference) (Group 2)
NOTICE:
The following CAN bus waveforms can be used only as reference. The actual measured waveform may differ significantly depending on the location of the open or short circuit.
(1) Open in a CAN branch line (CANH)
HINT:
- An abnormal waveform is output from an ECU with an open in one of its CAN branch lines. Because this abnormal output interferes with the signals from other ECUs, the output of other ECUs will also appear abnormal.
- Narrow down the malfunctioning part by checking DTCs or performing a CAN bus check, or by checking waveform changes when ECUs or sensors are disconnected. The waveform will change to one for an open in both sides of a CAN branch when the ECU or sensor with an open CAN branch line is disconnected.
(2) Open in a CAN branch line (CANL)
HINT:
- An abnormal waveform is output from an ECU with an open in one of its CAN branch lines. Because this abnormal output interferes with the signals from other ECUs, the output of other ECUs will also appear abnormal.
- Narrow down the malfunctioning part by checking DTCs or performing a CAN bus check, or by checking waveform changes when ECUs or sensors are disconnected. The waveform will change to one for an open in both sides of a CAN branch when the ECU or sensor with an open CAN branch line is disconnected.
(3) Open in a CAN main bus line (CANH)
HINT:
- Waveforms of ECUs or sensors that are closer to the central gateway ECU (network gateway ECU) than the open part are almost normal.
- Waveforms of ECUs or sensors that are on the opposite side of the central gateway ECU (network gateway ECU) from the open part are abnormal.
- An open in a CAN main bus line can be confirmed by measuring the resistance between the CANH and CANL terminals of any CAN branch.
(4) Short between a CAN bus line (CANH) and ground
HINT:
- Narrow down the shorted part by checking for waveform changes when disconnecting connectors from the CAN junction connectors or when disconnecting ECUs or sensors.
- A short to ground in the CANH line can be confirmed by measuring the resistance between CANH and ground using an ohmmeter.
(5) Short between a CAN bus line (CANL) and ground
HINT:
- Narrow down the shorted part by checking for waveform changes when disconnecting connectors from the CAN junction connectors or when disconnecting ECUs or sensors.
- A short to ground in the CANL line can be confirmed by measuring the resistance between CANL and ground using an ohmmeter.
DATA SENDING/RECEIVING TABLE
(a) Data sending/receiving table
HINT:
If Data List items related to sent/received data are not displayed properly, the part for which communication is interrupted can be determined using the table below.
| Data Content | Data Detected and Sent by | Data Received by | Relevant Data List Item | ||
|---|---|---|---|---|---|
| Can be Checked in the Data List | Cannot be Checked in the Data List | Selected System*3 | Data List Item | ||
| Accelerator position | Hybrid vehicle control ECU | Stereo component equalizer assembly |
| Hybrid Control | Throttle Position |
| ASC | Accelerator Position | ||||
| Engine speed | ECM |
|
| Engine and ECT | Engine Speed |
| Combination Meter | Engine Rpm | ||||
| EMPS | Engine Revolution | ||||
| Engine coolant temperature | ECM |
| Radio receiver assembly | Engine and ECT | Coolant Temp |
| Air Conditioner | Engine Coolant Temp | ||||
| Combination Meter | Coolant Temperature | ||||
| Shift position P signal | Hybrid vehicle control ECU |
|
| Hybrid Control | Shift Sensor SW - P |
| Driver Seat | P Switch | ||||
| Electric Parking Brake | P Position | ||||
| Power Source Control | Shift P Signal | ||||
| ASC | Shift SW Status (P Range) | ||||
| Advanced Parking Guidance/ICS/Intuitive P/A | Parking Signal | ||||
| Shift position R signal | Hybrid vehicle control ECU |
|
| Hybrid Control | Shift Sensor SW - R |
| Navigation System | Reverse Signal | ||||
| Advanced Parking Guidance/ICS/Intuitive P/A | Reverse Signal | ||||
| Electric Parking Brake | R Position | ||||
| ASC | Shift SW Status (R Range) | ||||
| Blind Spot Monitor Master | Reverse (Only for AT/CVT) | ||||
| Panoramic View Monitor | Shift R Position | ||||
| Shift position N signal | Hybrid vehicle control ECU |
|
| Hybrid Control | Shift Sensor SW - N |
| Electric Parking Brake | N Position | ||||
| ASC | Shift SW Status (N Range) | ||||
| Shift position D signal | Hybrid vehicle control ECU |
|
| Hybrid Control |
|
| Electric Parking Brake | D Position | ||||
| ASC | Shift SW Status (D Range) | ||||
| Stop light switch signal | Brake booster with master cylinder assembly (skid control ECU) |
| - | ABS/VSC/TRAC | Stop Light SW |
| Hybrid Control | Stop Light SW | ||||
| Vehicle Proximity Notification System | Stop Light SW | ||||
| Hybrid vehicle control ECU |
|
| ABS/VSC/TRAC | Stop Light SW | |
| Power Source Control | Stop Light Switch1 | ||||
| Hybrid Control | Stop Light Switch | ||||
| Electric Parking Brake | Stop Light Switch | ||||
| Air suspension | Stop Light Switch | ||||
| Wheel speed | Brake booster with master cylinder assembly (skid control ECU) |
|
| ABS/VSC/TRAC |
|
| Electric Parking Brake |
| ||||
| EMPS |
| ||||
| Hybrid Control |
| ||||
| AFS |
| ||||
| Air suspension |
| ||||
| Vehicle speed | Brake booster with master cylinder assembly (skid control ECU) |
|
| Brake | Vehicle Speed |
| Hybrid Control | Vehicle Spd | ||||
| Combination Meter | Vehicle Speed Meter | ||||
| Navigation System | Vehicle Speed | ||||
| Electric Parking Brake | Vehicle Speed | ||||
| ASC | Vehicle Speed | ||||
| Radar Cruise2 | Vhcl Spd-Brake ECU | ||||
| Vehicle Proximity Notification System | Vehicle Speed | ||||
| Combination meter assembly*2 |
|
| Combination Meter | Vehicle Speed Meter | |
| Driver Seat | Vehicle Speed | ||||
| Tilt&Telescopic | Freeze Speed Info | ||||
| Ambient temperature | Air conditioning amplifier assembly |
|
| Air Conditioner | Ambient Temp Sensor |
| Combination Meter | Ambient Temperature | ||||
| Electric Parking Brake | Ambient Temperature | ||||
| Hybrid Control | Ambient Temperature | ||||
| Yaw rate sensor | Airbag ECU assembly |
|
| Brake |
|
| Hybrid Control | Yaw Rate Value | ||||
| Blind Spot Monitor Master | Yaw Rate Sensor | ||||
| Steering sensor | Steering sensor |
|
| Brake |
|
| Hybrid Control | Steering Angle | ||||
| Blind Spot Monitor Master | Steering Angle | ||||
| AFS | Steering Sens Signal | ||||
| Air suspension | Steering Angle | ||||
| Seat memory switch |
| - | Main body ECU (multiplex network body ECU) | Mirror R |
|
| Mirror L |
| ||||
| Driver door courtesy switch | Main body ECU (multiplex network body ECU) | - |
| Main Body | FR Door Courtesy SW |
| Front passenger door courtesy switch | Main body ECU (multiplex network body ECU) | - |
| Main Body | FL Door Courtesy SW |
| Rear door courtesy switch | Main body ECU (multiplex network body ECU) | - |
| Main Body |
|
| Back door courtesy switch | Multiplex network door ECU | Main body ECU (multiplex network body ECU) | - | Back Door | Courtesy SW |
| Main Body | Back Door Courtesy SW | ||||
| Main body ECU (multiplex network body ECU) | - |
| Main Body | Back Door Courtesy SW | |
| Clearance sonar area infomation | Clearance warning ECU assembly | - |
| Advanced Parking Guidance/ICS/Intuitive P/A |
|
- *1: Although the received contents cannot be checked in the Data List, whether or not the data is received normally can be checked by observing the combination meter assembly.
- *2: The combination meter assembly receives a vehicle speed signal from the brake booster with master cylinder assembly (skid control ECU) and sends the signal to other ECUs.
-
*3: According to the display on the Techstream, read the Data List.
-
Enter the following menus: Powertrain / Hybrid Control / Data List.
Click here
-
Enter the following menus: Powertrain / Engine and ECT/ Data List.
Click here
-
Enter the following menus: Chassis / Brake / Data List.
Click here
-
Enter the following menus: Chassis / EMPS / Data List.
for Manual Tilt and Manual Telescopic Steering Column: Click here
for Power Tilt and Power Telescopic Steering Column: Click here
-
Enter the following menus: Body Electrical / Combination Meter / Data List.
Click here
-
Enter the following menus: Body Electrical / Power Source Control / Data List.
Click here
-
Enter the following menus: Body Electrical / Air Conditioner / Data List.
Click here
-
Enter the following menus: Chassis / Electric Parking Brake / Data List.
Click here
-
Enter the following menus: Powertrain / Radar Cruise2 / Data List.
Click here
-
Enter the following menus: Body Electrical / Driver Seat / Data List.
Click here
-
Enter the following menus: Body Electrical / AFS / Data List.
Click here
-
Enter the following menus: Body Electrical / Advanced Parking Guidance/ICS/Intuitive P/A / Data List.
Click here
-
Enter the following menus: Body Electrical / Main Body / Data List.
Click here
-
Enter the following menus: Body Electrical / Back Door / Data List.
Click here
-
Enter the following menus: Body Electrical / Tilt & Telescopic / Data List.
Click here
-
Enter the following menus: Body Electrical / ASC / Data List.
Click here
-
Enter the following menus: Body Electrical / Blind Spot Monitor Master / Data List.
Click here
-
Enter the following menus: Chassis / Panoramic View Monitor / Data List.
Click here
-
Enter the following menus: Body Electrical / Navigation System / Data List.
Click here
-
Enter the following menus: Body Electrical / Mirror R / Data List.
Click here
-
Enter the following menus: Body Electrical / Mirror L / Data List.
Click here
-
Enter the following menus: Chassis / Air suspension / Data List.
Click here
-
Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Data List.
Click here
-
Enter the following menus: Powertrain / Hybrid Control / Data List.
READ NEXT:
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