Diagnostic Procedure

DTC C1A67:54 [VEHICLE CONTROL MODULE] DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	INSPECT VEHICLE CONTROL MODULE (VCM) AND BODY CONTROL MODULE (BCM) FOR MALFUNCTION Perform the DTC inspection for the vehicle control module (VCM) and the body control module (BCM). (See DTC INSPECTION .) Is a DTC related to an internal malfunction displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [VEHICLE CONTROL MODULE (US)] .) (See DTC TABLE [BODY CONTROL MODULE (BCM) (US)] .)
1		No	Go to the next step.
2	INSPECT FRONT RADAR SENSOR FOR MALFUNCTION Perform the DTC inspection for the front radar sensor. (See DTC INSPECTION .) Is a DTC displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [FRONT RADAR SENSOR (US)] .)
2		No	Go to the next step.
3	FRONT RADAR SENSOR AIMING ADJUSTMENT Perform the front radar sensor aiming adjustment. (See FRONT RADAR SENSOR AIMING .) Clear the DTC recorded in the memory. (See CLEARING DTC .) Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION .) Was the aiming adjustment completed?	Yes	Go to repair completion verification 1.
3		No	If error code is displayed Inspect/repair the error cause according to the error code and perform the front radar sensor aiming adjustment again. (See FRONT RADAR SENSOR AIMING .) Go to repair completion verification 1. If the M-MDS screen suddenly closes during aiming Go to the next step. (Front radar sensor power supply circuit and ground malfunction can be considered)
4	INSPECT CIRCUITS OF FRONT RADAR SENSOR POWER SUPPLY SYSTEM AND GROUND Inspect the circuits of the front radar sensor power supply system and the ground. Open circuit, short circuit Poor connection of ground point Are the circuits and ground point normal?	Yes	Perform the aiming adjustment and then go to the next step. (See FRONT RADAR SENSOR AIMING .)
4		No	After repairing the malfunction, perform the aiming adjustment and then go to the next step. (See FRONT RADAR SENSOR AIMING .)
Repair completion verification 1	VERIFY THAT VEHICLE IS REPAIRED Install/connect the part removed/disconnected during the troubleshooting procedure. Clear the DTC recorded in the memory. (See CLEARING DTC .) Perform the DTC inspection for the vehicle control module (VCM). (See DTC INSPECTION .) Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US) .) If the CAN communication is normal, perform the diagnosis from Step 1. If the malfunction recurs, replace the body control module (BCM), then go to the next step. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION .)
Repair completion verification 1		No	Go to the next step.
Repair completion verification 2	VERIFY IF OTHER DTC IS DISPLAYED Perform the DTC inspection. (See DTC INSPECTION .) Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
Repair completion verification 2		No	DTC troubleshooting completed.