Security Indicator Malfunction
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Security Indicator Malfunction
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Diagnostic Fault Information
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Circuit
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Short to Ground
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Open/High Resistance
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Short to Voltage
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Signal Performance
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Control
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B0685 02
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1
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1
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-
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Ground
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-
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1
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-
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-
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1. Security Indicator Malfunction
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Circuit/System Description
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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.
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
Scan Tool Reference
Control Module References
for scan tool information
Circuit/System Verification
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Arm the content theft deterrent system. The security indicator should illuminate and/or flash during the arming sequence.
1.
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Ignition OFF, disconnect the harness connector at the B10B Light/Sunload Ambient Sensor.
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2.
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Ignition OFF, test for less than 60 Ω between the low reference circuit terminal 4 and ground.
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3.
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If greater than the specified range, test the low reference circuit for an open/high resistance.
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4.
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Ignition ON, test for B+ between the control circuit terminal 1 and ground.
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5.
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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.
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6.
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If all circuits test normal, replace the B10B Light/Sunload Ambient Sensor.
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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