DTC U0401:68 [ELECTRONIC 4WD CONTROL SYSTEM]

id0302a6201200

DTC U0401:68
Abnormal message from PCM
DETECTION CONDITION
•  Correct data cannot be received from PCM
FAIL-SAFE FUNCTION
•  Control disabled.
POSSIBLE CAUSE
•  PCM malfunction
•  4WD CM malfunction
SYSTEM WIRING DIAGRAM
Not applicable

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT FOR PCM MALFUNCTION
•  Using the M-MDS, perform the DTC inspection for the PCM.
•  Are any DTCs detected?
Yes
Go to applicable DTC inspection.
(See DTC TABLE [PCM (SKYACTIV-G 2.5)].)
(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
DTC troubleshooting completed, then go to the next step.
No
Go to the next step.
2
VERIFY THAT THE SAME DTC IS NOT PRESENT
•  Clear the DTCs from the memory.
•  Using the M-MDS, perform the 4WD control module DTC inspection.
•  Is the same DTC present?
Yes
Replace the 4WD CM, then go to the next step.
(See 4WD CONTROL MODULE REMOVAL/INSTALLATION.)
No
Go to the next step.
3
VERIFY THAT NO OTHER DTCS ARE PRESENT
•  Are any other DTCs output?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [ELECTRONIC 4WD CONTROL SYSTEM].)
No
DTC troubleshooting completed.