• | 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. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Rear compartment lid ajar switch signal circuit | -- | 1 | -- | -- |
Rear compartment lid ajar switch ground circuit | -- | 1 | -- | -- |
1. Trunk ajar indicator does not illuminate while rear compartment lid is open. |
The rear compartment lid can be released by operating the rear compartment lid release switch or by pressing the rear compartment release button on the remote keyless entry transmitter. The gear selector may be in any position, but the vehicle speed must equal 0 for the rear compartment lid to release.
When the ignition is ON, the body control module (BCM) supplies battery positive voltage to the rear compartment lid ajar switch through the rear compartment lid ajar switch signal circuit. When the rear compartment lid is opened, the signal circuit is connected to ground through the rear compartment lid ajar switch ground circuit and the voltage is pulled low within the BCM. In response, the BCM sends a serial data message to the driver information center (DIC) in the instrument panel cluster (IPC) to illuminate the rear compartment lid ajar indicator.
The rear compartment lid ajar indicator should illuminate when the lid is opened and go off when the lid is closed.
⇒ | If the rear compartment indicator illuminates, replace the rear compartment lid ajar switch. |
⇒ | If the rear compartment lid ajar indicator does not illuminate, test the rear compartment lid ajar switch signal and ground circuits for an open or a high resistance. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for DIC replacement, setup, and programming |