Convertible

Circuit Description
The BCM provides a 12 volt output to the courtesy lamps on circuit 149 to S241 when commanded by the I/P's Dimmer Switch input, the RH or LH Door Jamb Switch inputs, or the Rear Compartment Lid Ajar Indicator Switch input. S241 distributes power to the following:
^ S317 (RH/LH Rear Courtesy Lamps, Rear Compartment Lamp)
^ I/P Compartment Lamp
^ Console Compartment Lamp
^ Courtesy/Reading Lamps

DTC Will Set When:
Circuit 40/1002 is open due to defective Courtesy Fuse 8; harness or connector failure; circuit 149 (Courtesy Lamps Feed) is shorted to ground for greater than 50 milliseconds, while the BCM is attempting to Power this circuit; or BCM is defective.

Action Taken:
DTC 21 will set. No Courtesy lighting in the vehicle; '(P Dimmer Switch is In operative. Console Compartment and I/P Compartment Lamps inoperative. BCM will read out a series of flash DTCs upon entering Diagnostic Mode.

DTC Will Clear When:
Fault is corrected and DTC memory is cleared.

DTC Chart Test Description:
Numbers below refer to the steps in the diagnostic table.
1. This step checks for an open COURTESY Fuse 8.
2. If COURTESY fuse 8 is open, this test checks for a short to ground on circuit 40.
3. If COURTESY fuse 8 is OK, this test checks for an open in circuit 40 and circuit 1002.
4. This step checks for a short to ground in circuit 149.

Diagnostic Aids:
If the only DTC that flashes is a "History" code (DTC 31), the problem may be intermittent. Try performing the test shown while "wiggling" wiring and connectors; this can often cause the fault to appear. Check for poor connections at the BCM connector, which could cause an open or an intermittent fault.