DTC U0402:68 [INSTRUMENT CLUSTER]


id0902e8988900

DTC U0402:68

Signal error from TCM

Detection Condition
•  Instrument cluster receives the error signal from TCM.
Possible Causes
•  TCM malfunction
•  Instrument cluster malfunction

Diagnostic Procedure

Step

Inspection

Action

1
PERFORM TCM DTC INSPECTION
•  Perform the TCM DTC inspection using the M-MDS.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
Go to the next step.
2
PERFORM DTC INSPECTION AND VERIFY THAT MALFUNCTIONING PART IS TCM
•  Clear the DTC using the M-MDS.
•  Turn the ignition switch to the ON position and wait for 20 s or more.
•  Perform the instrument cluster DTC inspection 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 using the M-MDS.
•  Turn the ignition switch to the ON position and wait for 20 s or more.
•  Perform the instrument cluster DTC inspection using the M-MDS.
•  Is the same DTC present?
Yes
Replace the instrument cluster, 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.