DTC U0401:68 [INSTRUMENT CLUSTER]


id0902e8988800

DESCRIPTION

Signal error from PCM

DETECTION CONDITION
•  Instrument cluster cannot receive the correct data from the PCM.
POSSIBLE CAUSE
•  PCM malfunction
•  Instrument cluster malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
VERIFY PCM DTCs
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
Go to the next step.
2
VERIFY PCM MALFUNCTION
•  Clear the DTC from the instrument cluster using the M-MDS.
•  Switch the ignition to ON and wait for 20 s or more.
•  Verify the instrument cluster DTC using the M-MDS.
•  Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to Step 4.
3
VERIFY TROUBLESHOOTING COMPLETED
•  Clear the DTC from the instrument cluster using the M-MDS.
•  Switch the ignition to ON and wait for 20 s or more.
•  Verify the instrument cluster DTC 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.