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 |
|---|---|---|---|---|
Control | 2 | 1 | 1 | -- |
1. Security Indicator Malfunction 2. Security Indicator ON At All Times | ||||
Circuit/System Description
The security indicator is controlled by the body control module based on commands from the immobilizer system or the content theft deterrent 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 and is supplied B+ at all times. When the immobilizer or content theft deterrent system requests the indicator be commanded ON, the body control module 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
Ignition ON, command the Security Indicator ON and OFF with a scan tool. The security indicator should turn ON and OFF when changing between the commanded states.
| ⇒ | If the security indicator does not illuminate, replace the P16 instrument panel cluster. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for body control module or instrument panel cluster replacement, setup, and programming
