Test F: A Single Illumination Source Is Inoperative

PINPOINT TEST F: A SINGLE ILLUMINATION SOURCE IS INOPERATIVE

F1:

F2:

Normal Operation
The lighting control module (LCM) supplies a variable pulse width modulated (PWM) voltage to the dimmable illumination sources through circuit 484 (OG/BK). The dimmable illumination sources are grounded through circuit 57 (BK) and 676 (PK/OG). With the ignition switch in the ACCESSORY or RUN positions, voltage is supplied from the central junction box (CJB) to the door lock control switches and heated seat control switches through circuit 964 (DB/LG). The door lock control switches and heated seat control switches are grounded through circuit 57 (BK). For vehicles equipped with a moonroof, the overhead console is supplied with a variable voltage from the driver door module (DDM) on circuit 19 (LB/RD).

Possible Causes
- Fuse
- Circuit 19 (LB/RD) open
- Circuit 57 (BK) open
- Circuit 484 (OG/BK) open
- Circuit 676 (PK/OG) open
- Headlamp switch
- Adjustable pedal switch
- Traction control switch
- Message center switch
- Overhead console (without moonroof)
- Heated rear window switch
- Driver door lock control switch
- Passenger door lock control switch
- Floor shifter (if equipped)
- Driver heated seat control switch
- Passenger heated seat control switch
- DDM