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
The numbers below refer to the step numbers on the diagnostic table.
-
This DTC will set when there is a short to ground in the SECURITY indicator control circuit. Diagnose DTC B0687 if set as a current code before diagnosing DTC B0689.
-
Verifies the condition for setting the DTC is current.
-
Checks for an open in the security indicator control circuit or for a faulty theft deterrent control module module.
-
Checks for an open bulb filament.
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 | |
Does the scan tool indicate DTC B0687 is current? | Go to DTC B0687 | Go to Step 3 | |
While observing the SECURITY indicator, turn the ignition switch from OFF/Lock to RUN. Does the SECURITY indicator stay ON for a minimum of 2 seconds? | Go to Step 4 | Go to Step 5 | |
4 |
Does the DTC reset? | Go to Step 5 | Go to Diagnostic Aids |
Does the SECURITY indicator illuminate? | Go to Step 9 | Go to Step 6 | |
Inspect the SECURITY indicator bulb for an open filament. Is the bulb filament open? | Go to Step 10 | Go to Step 7 | |
7 | Test the security indicator control circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 8 |
8 | Inspect for poor connection in the SECURITY indicator control circuit at 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 13 | Go to Step 11 |
9 | Inspect for poor connections in the SECURITY indicator control circuit at the theft deterrent control module connector at the base of the steering column. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 12 |
10 | Replace the SECURITY indicator lamp bulb. Did you complete the replacement? | Go to Step 13 | -- |
11 | Replace the instrument panel cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console. Did you complete the replacement? | Go to Step 13 | -- |
12 |
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 13 | -- |
13 |
Does the DTC reset. | Go to Step 2 | System OK |
