DTC U0402:68 [REAR VEHICLE MONITORING SYSTEM]


id0902z2885400

DESCRIPTION

Signal error from TCM

DETECTION CONDITION
•  Rear vehicle monitoring control module cannot receive the correct data from the TCM.
POSSIBLE CAUSE
•  TCM malfunction
•  Rear vehicle monitoring control module malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
VERIFY TCM DTCs
•  Verify the TCM DTCs using the M-MDS.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
Go to the next step.
2
VERIFY TCM MALFUNCTION
•  Clear the DTC from the rear vehicle monitoring control module using the M-MDS.
•  Verify the rear vehicle monitoring system DTC using the M-MDS.
•  Is the same DTC present?
Yes
Replace the TCM, then go to the next step.
No
Go to Step 4.
3
VERIFY TROUBLESHOOTING COMPLETED
•  Clear the DTC from the rear vehicle monitoring control module using the M-MDS.
•  Verify the rear vehicle monitoring system DTC using the M-MDS.
•  Is the same DTC present?
Yes
Replace the rear vehicle monitoring control module, then go to the next step.
No
Go to the next step.
4
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.