Circuit Description
The SECURITY indicator lamp notifies the driver of the vehicle theft deterrent (VTD) system status. The theft deterrent control module controls the operation of the SECURITY indicator lamp. The SECURITY indicator lamp is part of the instrument panel cluster. Based on system status the SECURITY indicator may remain OFF, illuminate ON steady, or FLASH.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The theft deterrent control module detects a low current condition in the SECURITY indicator lamp control circuit for one second.
Action Taken When the DTC Sets
| • | DTC B0687 and DTC B0689 cycle as current DTCs every five seconds in the theft deterrent control module. |
| • | DTC B0687 and DTC B0689 are set as a history DTC in the theft deterrent control module's non-volatile memory. |
Conditions for Clearing the MIL/DTC
| • | The theft deterrent control module no longer detects an low current condition in the SECURITY indicator lamp control circuit. |
| • | A history DTC will clear after 100 consecutive fault free ignition cycles. |
| • | Using a scan tool in order to clear a history DTC. |
Diagnostic Aids
Refer to Testing for Intermittent Conditions and Poor Connections and Testing for Electrical Intermittents in Wiring Systems.
Test Description
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Verifies the condition for setting the DTC is current.
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Checks for an intermittent short to ground in the SECURITY indicator control circuit.
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Checks the SECURITY indicator control circuit for a short to ground.
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Determines whether the short to ground is in the instrument panel cluster or in the theft deterrent module.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Theft Deterrent System Schematics Connector End View Reference: Theft Deterrent System Connector End Views | |||
1 | Did you perform the Theft Deterrent Diagnostic System Check? | Go to Step 2 | |
While observing the SECURITY indicator, turn the ignition switch from OFF/Lock to RUN. Does the SECURITY indicator turn OFF in approximately 3 seconds? | Go to Step 3 | Go to Step 4 | |
Does the DTC reset? | Go to Step 4 | Go to Diagnostic Aids | |
Test the control circuit of the SECURITY indicator lamp for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 8 | Go to Step 5 | |
Does the SECURITY indicator stay on? | Go to Step 6 | Go to Step 7 | |
6 | Inspect for poor connections at the harness connector of the instrument panel cluster. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition? | Go to Step 10 | Go to Step 8 |
7 | Inspect for poor connections at the harness connector of the theft deterrent control module. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition? | Go to Step 10 | Go to Step 9 |
8 | Replace the instrument panel cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gages and Console. Did you complete the replacement? | Go to Step 10 | -- |
9 |
Important: If a 10 Minute or 30 Minute Re-Learn Procedure is perform, all keys not learned at that time will be erased and will not be recognized. Perform the Adding Keys procedure on all keys or instruct the customer how to perform the Adding Keys procedure. Refer to Adding Keys .
Did you complete the replacement? | Go to Step 10 | -- |
10 |
Does the DTC reset? | Go to Step 2 | System OK |
