Lexus NX: Drive Motor "A" Phase V Current Sensor Circuit Range / Performance (P0BEA-290,...,P1C6E-502)
DTC SUMMARY
MALFUNCTION DESCRIPTION
These DTCs indicate the current sensor value is abnormal. The cause of this malfunction may be one of the following:
- Inverter with converter assembly internal circuit malfunction
- The connectors are not connected properly
DESCRIPTION
The MG ECU, which is built into the inverter with converter assembly, monitors the main and sub sensors of the motor inverter current sensor. P0BEA-290, P0BEE-298, P1C3C-294, P1C3D-302, P1C4A-288, P1C4F-296, P1C6D-501 and P1C6E-502 indicate malfunctions in current sensors, and do not indicate malfunctions in the high-voltage system.
HINT:
The term "drive motor A" indicates the motor (MG2).
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
|---|---|---|---|---|---|
| P0BEA-290 | Drive Motor "A" Phase V Current Sensor Circuit Range / Performance | Malfunction in motor inverter current sensor (phase V main sensor)* (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
| P0BEE-298 | Drive Motor "A" Phase W Current Sensor Circuit Range / Performance | Malfunction in motor inverter current sensor (phase W main sensor)* (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
| P1C3C-294 | Drive Motor "A" Phase V Current Sensor Correlation | Malfunction in motor inverter current sensor (performance problem or open phase V):* The difference between the output of the phase V main sensor and phase V sub sensor is larger than the standard. (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
| P1C3D-302 | Drive Motor "A" Phase W Current Sensor Correlation | Malfunction in motor inverter current sensor (performance problem or open phase W):* The difference between the output of the phase W main sensor and phase W sub sensor is larger than the standard. (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
| P1C4A-288 | Drive Motor "A" Phase V Current Sensor Sub Circuit Range / Performance | Malfunction in motor inverter current sensor (phase V sub sensor)* (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
| P1C4F-296 | Drive Motor "A" Phase W Current Sensor Sub Circuit Range / Performance | Malfunction in motor inverter current sensor (phase W sub sensor)* (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
| P1C6D-501 | Drive Motor "A" Phase V Current Sensor Offset Range / Performance | Malfunction in motor inverter current sensor (phase V main and sub sensors offset)* (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
| P1C6E-502 | Drive Motor "A" Phase W Current Sensor Offset Range / Performance | Malfunction in motor inverter current sensor (phase W main and sub sensors offset)* (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
*: DTC is stored when the current sensor signal is out of the normal range.
MONITOR DESCRIPTION
The MG ECU monitors the motor inverter current sensor. If the MG ECU detects a current sensor malfunction, it sends a signal to the hybrid vehicle control ECU which will illuminate the MIL and store a DTC.
MONITOR STRATEGY
| Related DTCs | P0BEA (INF 290): Drive Motor "A" Phase V Current P0BEE (INF 298): Drive Motor "A" Phase W Current P1C3C (INF 294): Drive Motor "A" Phase V Current P1C3D (INF 302): Drive Motor "A" Phase W Current P1C4A (INF 288): Drive Motor "A" Phase V Current P1C4F (INF 296): Drive Motor "A" Phase W Current P1C6D (INF 501): Drive Motor "A" Phase V Current P1C6E (INF 502): Drive Motor "A" Phase W Current |
| Required sensors/components | Motor inverter current sensor, motor resolver |
| Frequency of operation | Continuous |
| Duration | TMC's intellectual property |
| MIL operation | 1 driving cycle |
| Sequence of operation | None |
TYPICAL ENABLING CONDITIONS
| The monitor will run whenever the following DTCs are not stored | TMC's intellectual property |
| Other conditions belong to TMC's intellectual property | - |
TYPICAL MALFUNCTION THRESHOLDS
| TMC's intellectual property | - |
COMPONENT OPERATING RANGE
| Hybrid vehicle control ECU | DTC P0BEA (INF 290) is not detected DTC P0BEE (INF 298) is not detected DTC P1C3C (INF 294) is not detected DTC P1C3D (INF 302) is not detected DTC P1C4A (INF 288) is not detected DTC P1C4F (INF 296) is not detected DTC P1C6D (INF 501) is not detected DTC P1C6E (INF 502) is not detected |
CONFIRMATION DRIVING PATTERN
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- Connect the Techstream to the DLC3.
- Turn the power switch on (IG) and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the power switch off and wait for 30 seconds or more.
- Turn the power switch on (IG) and wait for 5 seconds or more.
- Turn the Techstream on.
- Turn the power switch on (READY) with the shift lever in P, and wait for 5 seconds or more.
- Move the shift lever to N and wait for 5 seconds or more.
- Depress the accelerator pedal of the vehicle with the engine stopped and the shift lever in P to start the engine.
- Drive the vehicle forward with the shift lever in D for 5 m or more. [A]
- Drive the vehicle backward with the shift lever in R for 5 m or more. [B]
- Enter the following menus: Powertrain / Hybrid Control / Trouble Codes. [C]
-
Read the current DTCs.
HINT:
- If a current DTC is output, the system is malfunctioning.
- If current DTCs are not output, perform the following steps to check for permanent DTCs.
- Check that the permanent DTCs are cleared.
- If the permanent DTCs are not cleared, perform the universal trip, and then check for permanent DTCs again.
CAUTION / NOTICE / HINT
CAUTION:
- Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
-
After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.
Click here
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HINT:
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
NOTICE:
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
Click here
HINT:
After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.
- Turn the power switch on (IG) and wait for 5 seconds or more.
- Turn the power switch on (READY) with the shift lever in P and wait for 5 seconds or more.
- Move the shift lever to N and wait for 5 seconds or more.
- Depress the accelerator pedal of the vehicle with the engine stopped and the shift lever in P to start the engine.
- Drive the vehicle forward with the shift lever in D for 5 m or more.
- Drive the vehicle backward with the shift lever in R for 5 m or more.
PROCEDURE
| 1. | CHECK DTC OUTPUT (HYBRID CONTROL) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(d) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes| Result | Proceed to |
|---|---|
| P0BEA-290, P0BEE-298, P1C3C-294, P1C3D-302, P1C4A-288, P1C4F-296, P1C6D-501 and P1C6E-502 only is output, or DTCs except the ones in the table below are also output. | A |
| Any of the following DTCs including pending DTCs are also output. | B |
| Malfunction Content | Relevant DTC | |
|---|---|---|
| Power source circuit malfunction | P06B0-163 | Sensor Power Supply "A" Circuit / Open |
| P06E6-164 | Sensor Power Supply "C" Circuit / Open | |
| P06D6-511 | Sensor Reference Voltage "F" Circuit / Open | |
| P1C73-512 | Sensor Standard Voltage "F" Circuit / Open | |
| System malfunction | P0A78-202 | Drive Motor "A" Inverter Performance |
HINT:
-
P0BEA-290, P0BEE-298, P1C3C-294, P1C3D-302, P1C4A-288, P1C4F-296, P1C6D-501 and P1C6E-502 may be output as a result of the malfunction indicated by the DTCs above.
- The chart above is listed in inspection order of priority.
- Check DTCs that are output at the same time by following the listed order. (The main cause of the malfunction can be determined without performing unnecessary inspections.)
(e) Turn the power switch off.
| B | .gif) | GO TO DTC CHART |
|
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| 2. | CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR) |
Click here
| Result | Proceed to |
|---|---|
| OK | A |
| NG (The connector is not connected securely.) | B |
| NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) | C |
| A | | REPLACE INVERTER WITH CONVERTER ASSEMBLY |
| B | | CONNECT SECURELY |
| C | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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