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Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis (Single Page) >> Drivelines & Axles >> Differentials & Drive Axles >> On-Board Diagnostics - AWD System >> DTC U0402-68: Signal Error From TCM [AWD Control Module] >> Notes

DTC U0402-68: Signal Error From TCM [AWD Control Module]: Notes

DTC U0402:68 (AWD CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

DTC U0402:68 Signal error from TCM
DETECTION CONDITION
  • The instrument cluster received error signals from the transaxle for 5 s with the ignition switched ON (engine off or on).
FAIL-SAFE FUNCTION
POSSIBLE CAUSE
  • The transaxle could not send a normal signal temporarily. (DTCs are stored in the TCM.)
  • TCM malfunction
  • Instrument cluster malfunction
  • AWD control module malfunction
SYSTEM WIRING DIAGRAM
  • Not applicable