B0686

Diagnostic Chart:

Schematic:

CIRCUIT DESCRIPTION
The SECURITY indicator lamp notifies the driver of the theft deterrent system status. The theft deterrent module controls the operation of the SECURITY indicator lamp. The SECURITY indicator lamp is part of the Instrument Panel cluster. The Instrument Panel cluster provides positive voltage to the SECURITY indicator lamp bulb when the ignition switch is in RUN, Bulb Test, or CRANK position. A control circuit is wired between the Instrument Panel cluster and the theft deterrent module. This control circuit allows the theft deterrent module to provide a path to ground to the SECURITY indicator lamp bulb causing it to remain off, turn on, or flash based on system status. Refer to System Operation for indicator statues.

CONDITIONS FOR RUNNING THE DTC
The ignition switch must be in the RUN, Bulb Test or START position.

CONDITIONS FOR SETTING THE DTC
The theft deterrent module detects an over-current condition in the SECURITY indicator lamp control circuit for one second.

ACTION TAKEN WHEN THE DTC SETS
DTC B0686 sets as current DTCs in the theft deterrent module.

CONDITIONS FOR CLEARING THE MIL/DTC
- The theft deterrent module no longer detects an over-current condition in the SECURITY indicator lamp control circuit during the ignition cycle.
- A history DTC will clear after 100 consecutive fault-free ignition cycles. An ignition cycle consists of an ignition switch transition from LOCK/OFF to RUN.
- Using a scan tool.

DIAGNOSTIC AIDS
A poor or intermittent connection may cause this DTC to set. Refer to Testing for Intermittent and Poor Connections in Diagrams.

TEST DESCRIPTION
2. Determines whether the condition that cause this DTC to set is currently present or is intermittent.
3. Checks for an intermittent short to B+ in the SECURITY indicator control circuit.
4. Checks for a short to B+ in the SECURITY indicator lamp control circuit.
5. Checks for a short to B+ within the Instrument Panel cluster. It also checks for a faulty indicator bulb.