Feature Customization - BCM Input/Output Test Activation

1. Turn the IP dimmer switch OFF.
2. Turn the ignition switch to the OFF position.
3. Remove the MALL PGM fuse.
4. Turn the ignition switch to the ACC position. The BCM will sound the chime a number of times equivalent to the BCM type installed on the vehicle. Refer to Body Control System Circuit Description in Body Control System.
5. Within 1 second, turn the ignition switch from the ACC position to the OFF position then back to the ACC position.
The BCM will sound any DTCs stored. Refer to Body Control Module Diagnostic Information in Body Control System.
6. Turn the IP dimmer switch to the DOME position.

The BCM entered the Input/Output test. The BCM Input/Output consists of the following tests:
^ Test 1- De-energizes circuit 1393. Turns OFF all of the interior lights.
^ Test 2- Energizes circuit 1393. Provides power to all of the interior lights.
^ Test 3- Grounds circuit 690. Turns ON all the courtesy lights.
^ Test 4- Energizes the theft deterrent relay for 1 second by grounding circuit 352. Turns ON the headlights (BCM type 4 only).
^ Test 5- Energizes the horn relay for 25 ms by grounding circuit 28. Sounds the horn (BCM type 4 only).
^ Test 6- Turns the theft deterrent indicator lamp ON by grounding circuit 749 (BCM type 4 only).
^ Test 7- Turns the theft deterrent indicator lamp OFF by opening circuit 749 (BCM type 4 only).

The BCM runs the Input/Output test in numerical order.

In order to move to the next test, cycle the IP dimmer switch from the DOME position to the OFF position then back to the DOME position. The BCM will sound a chime a number of times equivalent to the Input/Output test number listed above. The Input/Output test sequence repeats until the ignition switch is turned to the OFF position.

When the BCM is performing the Input/Output test, the chime will sound when any of the BCM inputs are activated. For example, the chime will sound when opening any of the vehicle doors.