BCM-Courtesy Lamp 2 Output Short

BCM-COURTESY LAMP 2 OUTPUT SHORT





For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
Ignition and Courtesy Lamps on.

- Set Condition:
BCM detects the output driver status low.





Diagnostic Test

1. INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, erase all BCM DTCs.
Turn the Courtesy lamps on.
With the scan tool, read the active DTCs.
Does the scan tool display Courtesy Lamp 2 Output Short?

Yes

- Go To2

No

- The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

2. SHORTED LAMP UNIT
Turn the ignition off.
Disconnect the four Rear Courtesy Lamps and the Liftgate Courtesy Lamp.
Turn the ignition on.
With the scan tool, read the active BCM DTCs.
Does the scan tool display Courtesy Lamp 2 Output Short?

Yes

- Go To3

No

- Repair the appropriate Lamp Unit for a short to ground.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

3. (M22) COURTESY LAMP 2 OUTPUT CIRCUIT SHORT TO GROUND




Turn the ignition off.
Disconnect the BCM C2 harness connector.
Disconnect the Rear Courtesy Lamps and Liftgate Courtesy Lamp.
Measure the resistance between ground and the (M22) Courtesy Lamp 2 Output circuit, and the (M11) Liftgate Courtesy Lamp driver.
Is the resistance below 5.0 ohms?

Yes

- Repair the (M22) Courtesy Lamp 2 Output circuit for a short to ground.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Replace and program the Body Control Module.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test.