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 |
|---|---|---|---|---|
Security Indicator Control | 2 | 1 | 1 | -- |
1. Security Indicator Inoperative 2. Security Indicator ON At All Times | ||||
Circuit/System Description
The security indicator is controlled by the body control module (BCM) based on commands from the immobilizer system or the content theft deterrent (CTD) system. With the ignition OFF, the security indicator is commanded by the CTD system. With the ignition ON, the security indicator is commanded by the immobilizer system.
The security indicator is located in the instrument panel cluster (IPC) and is supplied B+ at all times. When the immobilizer or CTD system requests the indicator be commanded ON, the BCM grounds the security indicator control circuit, illuminating the indicator.
Reference Information
Schematic Reference
Theft Deterrent System Schematics
Connector End View Reference
Description and Operation
Content Theft Deterrent (CTD) Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Arm the CTD system. The security indicator should illuminate and/or flash during the arming sequence.
Circuit/System Testing
- Ignition OFF, disconnect the X3 harness connector at the BCM.
- Ignition ON, verify the security indicator is not illuminated.
- Install a 10A fused jumper wire between the control circuit terminal 7 and ground. Verify the security indicator is illuminated.
- If all circuits test normal, replace the BCM.
| ⇒ | If the security indicator is illuminated, test the control circuit terminal 7 for a short to ground. If the circuit tests normal, replace the IPC. |
| ⇒ | If the security indicator is not illuminated, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the IPC. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for BCM or IPC replacement, setup, and programming
