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

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. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FS5A-EL].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FS5A-EL].)
1		No	Go to the next step.
2	VERIFY TCM MALFUNCTION • Clear the DTC from the rear vehicle monitoring control module using the M-MDS. (See CLEARING DTC [REAR VEHICLE MONITORING SYSTEM].) • Verify the rear vehicle monitoring system DTC using the M-MDS. (See DTC INSPECTION [REAR VEHICLE MONITORING SYSTEM].) • Is the same DTC present?	Yes	Replace the TCM, then go to the next step. (See TCM REMOVAL/INSTALLATION [FS5A-EL].)
2		No	Go to Step 4.
3	VERIFY TROUBLESHOOTING COMPLETED • Clear the DTC from the rear vehicle monitoring control module using the M-MDS. (See CLEARING DTC [REAR VEHICLE MONITORING SYSTEM].) • Verify the rear vehicle monitoring system DTC using the M-MDS. (See DTC INSPECTION [REAR VEHICLE MONITORING SYSTEM].) • Is the same DTC present?	Yes	Replace the rear vehicle monitoring control module, then go to the next step. (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)
3		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. (See DTC TABLE [REAR VEHICLE MONITORING SYSTEM].)
4		No	DTC troubleshooting completed.