Diagnostic Procedure

STEP	INSPECTION		ACTION
1	VERIFY BCM DTCs Clear the DTC using the M-MDS. (See CLEARING DTC [BCM] .) Perform the BCM DTC inspection using the M-MDS. (See DTC INSPECTION [BCM] .) Is the same DTC present?	Yes	Go to the next step.
1		No	Go to Step 6.
2	INSPECT HEADLIGHT RELAY (HI) Switch the ignition to off. Disconnect the negative battery cable. Remove the headlight relay (HI). (See RELAY LOCATION .) Inspect the headlight relay (HI). (See RELAY INSPECTION .) Is there any malfunction?	Yes	Replace the relay, then go to Step 5. (See RELAY LOCATION .)
2		No	Go to the next step.
3	INSPECT BCM CONNECTOR AND TERMINALS Disconnect the BCM connector. Inspect the connector and terminals (corrosion, damage, pin disconnection). Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to Step 5.
3		No	Go to the next step.
4	INSPECT HEADLIGHT HIGH CIRCUIT FOR SHORT TO GROUND Verify that the headlight relay (HI) is removed. Verify that the BCM connector is disconnected. Inspect for continuity between BCM terminal 1T (wiring harness-side) and body ground. Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to ground, then go to the next step.
4		No	Go to the next step.
5	VERIFY TROUBLESHOOTING COMPLETED Make sure to reconnect all disconnected connectors. Reconnect the negative battery cable. Clear the DTC using the M-MDS. (See CLEARING DTC [BCM] .) Perform the BCM DTC inspection using the M-MDS. (See DTC INSPECTION [BCM] .) Is the same DTC present?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the BCM. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION .) Go to the next step.
5		No	Go to the next step.
6	VERIFY THAT NO OTHER DTCs ARE PRESENT Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [BCM] .)
6		No	DTC troubleshooting completed.