Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Rear Compartment Lamp Control | 2 | 2 | 1 | -- |
Rear Compartment Lid Release Switch Signal | 4 | 3 | -- | -- |
Rear Compartment Lid Ajar Switch Signal | 4 | 5 | -- | -- |
Rear Compartment Lid Ajar Switch Voltage Supply | 3 | 3 | 3 | -- |
Trunk Release Relay Control | B3265 06 | B3265 06 | B3265 01 | -- |
Rear Compartment Lid Ajar Switch Ground | -- | 3 | 3 | -- |
Rear Compartment Lamp Ground | -- | 2 | 2 | -- |
Rear Compartment Lid Release Switch Ground | -- | 3 | 3 | -- |
1. Rear Compartment Lamp(s) Always On 2. Rear Compartment Lamp(s) Inoperative 3. Trunk Release Inoperative 4. Trunk Ajar Indicator Always On 5. Trunk Ajar Indicator Inoperative | ||||
Circuit/System Description
The INTERIOR LIGHTS fuse supplies battery voltage to the body control module (BCM). The BCM applies battery voltage to the rear compartment lamp through the rear compartment lamp control circuit. The rear compartment lamp is provided ground permanently at G402. When the BCM receives a rear hatch open input, the BCM will activate the rear compartment lamp control circuit to provide battery voltage to the rear compartment lamp.
Reference Information
Schematic Reference
Connector End View Reference
Lighting Systems Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
- Ignition OFF, disconnect the BCM C1 harness connector. The rear compartment lamp should turn OFF.
- If all circuit tests normal, replace the BCM.
| ⇒ | If the rear compartment lamp remains illuminated, repair the rear compartment lamp control circuit for a short to voltage. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for BCM replacement, setup, and programming
