DTC U0402:68 [REAR VEHICLE MONITORING SYSTEM]SM2446022
DTC U0402:68 [REAR VEHICLE MONITORING SYSTEM]

id0902z2885400

DESCRIPTION

Erratic signal from TCM

DETECTION CONDITION
• Rear vehicle monitoring control module (RH) receives erratic signal from TCM for 1 s or more.
POSSIBLE CAUSE
• TCM malfunction
• Rear vehicle monitoring control module (RH) malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
CONFIRM TCM DTC
• Perform the DTC inspection to confirm the TCM DTC using the M-MDS. (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FS5A-EL].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [AW6A-EL, AW6AX-EL].)
• 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. (See CLEARING DTC [REAR VEHICLE MONITORING SYSTEM].)
• Turn the ignition switch to the ON position.
• Perform the “DTC INSPECTION” to confirm 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.
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].)
• Turn the ignition switch to the ON position.
• Perform the “DTC INSPECTION” to confirm 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 (RH), 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.