B1031

B1031-19-TRUNK LAMP - OVER CURRENT

For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on.

- Set Condition:
When the Cluster detects a short to ground on the Courtesy Lamps Driver circuit.





1. CHECK FOR AN ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)
1. Turn the ignition on.
2. With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK THE CARGO LAMP FOR AN INTERNAL SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the Cargo Lamp harness connector.
3. Turn the ignition on.
4. With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 3

No

- Replace the Cargo Lamp.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. CHECK THE (M25) COURTESY LAMPS DRIVER CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the BCM C2 harness connector.
3. Measure the resistance between ground and the (M25) Courtesy Lamps Driver circuit.

Is the resistance below 10K Ohms?

Yes

- Repair the short to ground in the (M25) Courtesy Lamps Driver circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the BCM. Body Control Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.