DTC U0422:00 [DSC HU/CM]


id040262888300

DTC
U0422:00
Signal error from body control module (BCM)
DETECTION CONDITION
•  Error detected in signal from body control module (BCM) via CAN communication.
FAIL-SAFE FUNCTION
•  Refer to “Fail-safe function table”. (See DTC TABLE [DSC HU/CM].)
POSSIBLE CAUSE
•  Body control module (BCM) malfunction
SYSTEM WIRING DIAGRAM


Diagnostic Procedure

Step

Inspection

Action

1
VERIFY BODY CONTROL MODULE (BCM) DTC
•  Using the M-MDS, perform the body control module (BCM) DTC inspection.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
DTC troubleshooting completed, then go to the next step.
No
Go to the next step.
2
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Using the M-MDS, clear the DTC from the DSC HU/CM.
•  Using the M-MDS, perform the DSC HU/CM DTC inspection.
•  Is the same Pending DTC present?
Yes
Repeat the inspection from Step1.
If the malfunction recurs, replace the body control module (BCM), then go to the next step.
No
Go to the next step.
3
VERIFY NO DTC IS PRESENT
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.