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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 content theft deterrent 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
  1. Ignition OFF. Arm the content theft deterrent system.
  2. Verify that the security LED should illuminate and/or flash during the arming sequence.
    3. [ARW-LISTFAIL]

  3. If not OK

    Refer to Circuit/System Testing.

    4. [/ARW-LISTFAIL][ARW-LISTPASS]

  4. If OK

    5. [/ARW-LISTPASS]
  5. Verify DTC B0685 does not set.
    6. [ARW-LISTFAIL]

  6. If DTC B0685 does set

    Refer to Circuit/System testing.

    7. [/ARW-LISTFAIL][ARW-LISTPASS]

  7. If DTC does not set

    8. [/ARW-LISTPASS]
  8. All OK.

Circuit/System Testing
  1. Ignition OFF, disconnect the harness connector at the B10B Ambient Light/Sunload Sensor.
  2. Test for less than 5 Ω between the ground circuit terminal 6 and ground.
    3. [ARW-LISTFAIL]

  3. If 5 Ω or greater

    4. [/ARW-LISTFAIL]
    2.1. Ignition OFF.
    2.2. Test for less than 2 Ω in the ground circuit end to end.
    [ARW-LISTFAIL]

  4. If 2 Ω or greater, repair the open/high resistance in the circuit.

  5. If less than 2 Ω, repair the open/high resistance in the ground connection.

    6. [/ARW-LISTFAIL] [ARW-LISTPASS]

  6. If less than 5 Ω

    7. [/ARW-LISTPASS]
  7. Ignition ON, connect a test lamp between the control circuit terminal 1 and the ground circuit terminal 6.
  8. Verify the test lamp turns ON and OFF when Commanding the Security Indicator Lamp ON and OFF with a scan tool.
    9. [ARW-LISTFAIL]

  9. If the test lamp is always OFF

    10. [/ARW-LISTFAIL]
    4.1. Ignition OFF, disconnect the harness connector at the K9 Body Control Module.
    4.2. Test for infinite resistance between the control circuit and ground.
    [ARW-LISTFAIL]

  10. If less than infinite resistance, repair the short to ground on the circuit.

    11. [/ARW-LISTFAIL][ARW-LISTPASS]

  11. If infinite resistance

    12. [/ARW-LISTPASS]
    4.3. Test for less than 2 Ω in the control circuit end to end.
    [ARW-LISTFAIL]

  12. If 2 Ω or greater, repair the open/high resistance in the circuit.

  13. If less than 2 Ω, replace the K9 Body Control Module.

    14. [/ARW-LISTFAIL] [ARW-LISTFAIL]

  14. If the test lamp is always ON

    15. [/ARW-LISTFAIL]
    4.1. Ignition OFF, disconnect the harness connector at the K9 Body Control Module, ignition ON.
    4.2. Test for less than 1 V between the control circuit and ground.
    [ARW-LISTFAIL]

  15. If 1 V or greater, repair the short to voltage on the circuit.

  16. If less than 1 V, replace the K9 Body Control Module.

    17. [/ARW-LISTFAIL] [ARW-LISTPASS]

  17. If the test lamp turns ON and OFF

    18. [/ARW-LISTPASS]
  18. Replace the B10B Ambient Light/Sunload 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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