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Home >> Mazda >> 2025 >> CX-5 S >> Repair and Diagnosis >> Transmission >> Automatic Trans >> On-Board Diagnostic - AWD System >> DTC U0401:68 Abnormal Message From Pcm [AWD Control Module] >> Diagnostic procedure

Diagnostic procedure

DTC U0401:68 (AWD CONTROL MODULE) DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 INSPECT FOR PCM MALFUNCTION  Yes Go to applicable DTC inspection.
(See DTC TABLE [PCM (VIN L (WITHOUT CYLINDER DEACTIVATION))] .)
(See DTC TABLE [PCM (VIN M (WITH CYLINDER DEACTIVATION))] .)
(See DTC TABLE [PCM (VIN Y)] .)
No Go to the next step.
2 VERIFY THAT THE SAME DTC IS NOT PRESENT  Yes Replace the AWD control module.
(See AWD 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 [AWD CONTROL MODULE] .)
No DTC troubleshooting completed.