Lexus NX: CAN Communication Failure (Message Registry) (U1000)
DESCRIPTION
When the clearance warning ECU assembly determines that the CAN communication circuit is malfunctioning during self-diagnosis, DTC U1000 is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U1000 | CAN Communication Failure (Message Registry) | CAN communication circuit malfunction is detected | Clearance warning ECU assembly |
PROCEDURE
| 1. | CHECK FOR DTC |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
HINT:
After turning the power switch from off to on (IG), wait 10 seconds or more before checking for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes(b) Clear the DTCs according to the screen on the Techstream.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs(c) Recheck for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble CodesOK:
DTC U1000 is not output.
HINT:
- If DTC U1000 is not output after clearing the DTCs, an intermittent CAN communication circuit malfunction is suspected.
-
If DTC U1000 is output frequently, replace the clearance warning ECU assembly, even though the DTC was not output when rechecking for DTCs.
Click here
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| OK | .gif) | USE SIMULATION METHOD TO CHECK |
| NG | | REPLACE CLEARANCE WARNING ECU ASSEMBLY |
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Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following systems aft
Parts Location
PARTS LOCATION ILLUSTRATION *A w/ Panoramic View Monitor System *B w/ Parking Assist Monitor System *1 FRONT CORNER ULTRASONIC SENSOR (FR SENSOR) *2 FRONT CENTER ULTRASONIC SENSOR
SEE MORE:
Precaution
PRECAUTION INITIALIZATION NOTICE: Perform Registration (VIN registration) when replacing the ECM. Click here DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE:
After the power switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary batter
Removal
REMOVAL PROCEDURE 1. REMOVE NO. 1 ENGINE UNDER COVER ASSEMBLY Click here 2. REMOVE FAN AND GENERATOR V BELT Click here 3. REMOVE FRONT SUSPENSION MEMBER REINFORCEMENT RH Click here 4. REMOVE CRANKSHAFT PULLEY ASSEMBLY Click here 5. REMOVE TIMING CHAIN COVER OIL SEAL (a) Using a screwdri
