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 rear compartment lamp.
- Verify that a test lamp illuminates between the rear compartment lamp control circuit and ground at the rear compartment lamp harness connector.
- Verify that a test lamp illuminates between the rear compartment lamp control circuit and the rear compartment lamp ground circuit at the rear compartment lamp harness connector.
- If all circuits test normal, test or replace the rear compartment lamp.
| ⇒ | If the test lamp does not illuminate, repair the rear compartment lamp control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM. |
| ⇒ | If the test lamp does not illuminate, repair the rear compartment lamp ground circuit for an open/high resistance. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for BCM replacement, setup, and programming |
