DTC 002

CIRCUIT DESCRIPTION
The body control module (BCM) controls the inadvertent load (battery rundown) protection feature. The BCM de-energizes the courtesy lights supply voltage circuit ten minutes after the ignition switch has been turned from the ACC position or the RUN position to the LOCK position or the OFF position.

The BCM restores power to the courtesy lights supply voltage circuit when the following actions occur:
^ The ignition switch is turned from the LOCK position or the OFF position to the ACC position or the RUN position.
^ The key is removed from the ignition.
^ Any vehicle door is opened.
^ The instrument panel dimmer switch is turned to the DOME position.
^ Any interior courtesy light connected to the courtesy lights supply voltage circuit turned on.
^ The BCM receives a message to unlock the doors from the remote control door lock receiver (BCM type 3 or type 4 only).
^ A door is unlocked using a key (BCM type 4 only).

The inadvertent load (battery rundown) protection feature is mileage-sensitive. Vehicles with less than 15 total driven miles (24 kilometers) have a time-out of 162-198 seconds instead of 10 minutes.

CONDITIONS FOR SETTING THE DTC
The BCM detects a short to battery positive voltage or ground in the courtesy lights supply voltage circuit.

ACTION TAKEN WHEN THE DTC SETS
^ The BCM sets the Diagnostic Trouble Code (DTC) 2.
^ The inadvertent load (battery rundown) protection feature is disabled when the courtesy lights supply voltage circuit is shorted to battery positive voltage.
^ The interior courtesy lights do not turn on when the courtesy lights supply voltage circuit shorted to ground.

CONDITIONS FOR CLEARING THE MIL/DTC
^ A short to battery positive voltage or ground in the courtesy lights supply voltage circuits no longer present.
^ After you complete the repairs, refer to On-Board Diagnostic Features in order to clear the DTC.

DIAGNOSTIC AIDS
^ Inspect for a short to battery positive voltage in the courtesy lights supply voltage circuit.
^ Inspect for a short to ground in the courtesy lights supply voltage circuit.

TEST DESCRIPTION

Steps 1-8:

The numbers below refer to the step numbers on the diagnostic table.
1. Always perform the lighting diagnostic system check before attempting to diagnose the DTC.
2. This step performs the BCM Input/Output test. This test energizes and de-energizes the courtesy lights supply voltage circuit. If the courtesy lights turn off during this test the courtesy lights supply voltage circuit is not shorted to battery positive voltage or ground.
3. Tests the courtesy lights supply voltage circuit of the BCM for a short to battery positive voltage.
4. Tests the courtesy lights supply voltage circuit of the interior lamps override switch for a short to battery positive voltage.