B0688

DTC B0688 Security System Indicator Circuit High:

CIRCUIT DESCRIPTION
The security indicator is a hardwired lamp that receives power form the gauges fuse 4 through CKT 39.

CONDITIONS FOR SETTING THE DTC
- The ignition switch is ON.
- The EVO/PASSLOCK module is unable to provide a complete path to ground for the security indicator due to a wiring fault or a defective EVO/PASSLOCK module.

ACTION TAKEN WHEN THE DTC SETS
- The ignition switch is ON.
- The security indicator is commanded ON.
- The EVO/PASSLOCK module connector terminal B2 voltage is greater than 2.9 volts.
- The security indicator may be on when the ignition switch is OFF if CKT 749 is shorted to battery power.

CONDITIONS FOR CLEARING THE DTC
- The DTC will clear after an ignition cycle has occurred without the fault.
- The EVO/PASSLOCK module history codes will be cleared after 100 ignition cycles with no current codes active.
- Using a scan tool.

DIAGNOSTIC AIDS
- Perform a visual inspection of the wiring and the connectors.
- Inspect the PASSLOCK sensor harness for an intermittent or a short to battery.

TEST DESCRIPTION
The numbers below refer to the numbers on the diagnostic table:
2. This step isolates the problem between the harness and the EVO/PASSLOCK module.
3. This step isolates the problem between the instrument cluster and the harness