Security Indicator Malfunction

/ 9-5 (9650) / 2010 / 3. Electrical System / Theft protection / Fault diagnosis, fault symptoms / Security Indicator Malfunction

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	B0685 02	1	1	-
Ground	-	1	-	-
1. Security Indicator Malfunction

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

Component Connector End Views

Description and Operation

Content Theft Deterrent (CTD) Description and Operation

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Arm the content theft deterrent system. The security indicator should illuminate and/or flash during the arming sequence.

Circuit/System Testing

1.	Ignition OFF, disconnect the harness connector at the B10B Light/Sunload Ambient Sensor.

2.	Ignition OFF, test for less than 60 Ω between the low reference circuit terminal 4 and ground.

3.	If greater than the specified range, test the low reference circuit for an open/high resistance.

4.	Ignition ON, test for B+ between the control circuit terminal 1 and ground.

5.	If less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 BCM.

6.	If all circuits test normal, replace the B10B Light/Sunload Ambient Sensor.

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

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