Door/Liftgate Lamp Output Short
NOTE:
After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.
- Turn the ignition on. With the DRBIII®, clear all BCM DTC's. With the DRBIII®, read the DTC information. If the DRBIII® reads: DOOR/LIFTGATE LAMP OUTPUT SHORT, go to the next step. If the DRBIII® does not read: DOOR/LIFTGATE LAMP OUTPUT SHORT, 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.
- Turn the ignition off: Disconnect the Liftgate Door Harness. See Fig 1. Open the Liftgate. Measure the resistance of the Liftgate Output circuit. If the resistance is below 5 ohms, repair the Courtesy Lamps Driver Liftgate Circuit for a short condition. If the resistance is above 5 ohms, go to the next step.
- Disconnect the BCM C3 harness connector. See Figure. Disconnect the Drivers and Front Passenger door harness connectors one at a time. See Fig 2. Measure the resistance of each Door Lamp Driver circuit to ground. If the resistance is below 5 ohms, replace the Body Control Module. See BODY CONTROL MODULE under REMOVAL & INSTALLATION. If the resistance is above 5 ohms, repair the Applicable Courtesy Lamps Driver Door Circuit for a short to ground.