Diagnostic Procedure

BACKUP LAMP OUTPUT OPEN-BCM - DIAGNOSTIC PROCEDURE

TEST	ACTION	APPLICABILITY
1	Turn the ignition on. With the DRBIII®, clear all BCM DTC's. Actuate the Backup Lamps. With the DRBIII®, read the DTC information. Does the DRBIII® read: Backup Lamp 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 terminal push out or any chafed, pierced, pinched, or partially broken wires. Perform BODY VERIFICATION TEST VER-1 .	All
2	Turn the ignition off Disconnect the inoperative rear tail lamp 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 inoperative rear tail lamp harness connector. Turn the ignition on. Engage the transmission to reverse. Using a 12-volt test light connected to ground, check the Backup Lamps Output circuit. Does the test light illuminate brightly? Yes: Replace the applicable Backup Lamp. Perform BODY VERIFICATION TEST VER-1 . No: Go To 4	All
4	Turn the ignition off. Disconnect the Body Control Module C2 harness connector. Disconnect the inoperative rear tail lamp harness connector. Measure the resistance of the Backup Lamp Driver Circuit. Is the resistance above 5.0 ohms? Yes: Repair the Backup 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