Diagnostic Procedure

LEFT REAR TURN SIGNAL OUTPUT OPEN-BCM - DIAGNOSTIC PROCEDURE

TEST	ACTION	APPLICABILITY
1	Turn the ignition on. With the DRBIII®, clear all BCM DTC's. Actuate the Turn Signals. With the DRBIII®, read the DTC information. Does the DRBIII® read: Left Rear Turn Signal Output Open? Yes: Go To 2 No: The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform BODY VERIFICATION TEST VER-1 .	All
2	Turn the ignition off. Disconnect the Left Rear Turn Signal harness connector. Using a 12-volt test light connected to 12-volts, check the ground circuit. Does the test light illuminate brightly? Yes: Go To 3 No: Repair the Ground Circuit. Perform BODY VERIFICATION TEST VER-1 .	All
3	Turn the ignition off. Disconnect the Left Rear Turn Signal Lamp connector. Turn the ignition on. Turn the Left Turn Signal on. Using a 12-volt test light connected to ground, check the Left Rear Turn Signal Output circuit. Does the test light illuminate brightly? Yes: Replace the Turn Signal Lamp. Perform BODY VERIFICATION TEST VER-1 . No: Go To 4	All
4	Turn the ignition off. Disconnect the Body Control Module C2 connector. Disconnect the left rear tail lamp connector. Measure the resistance of the Left Rear Turn Signal Driver Circuit to ground. Is the resistance above 5.0 ohms? Yes: Repair the Left Rear Turn Signal Lamp Driver Circuit for an open condition. Perform BODY VERIFICATION TEST VER-1 . No: Replace the Body Control Module. Perform BODY VERIFICATION TEST VER-1 .	All