Pinpoint Tests

PINPOINT TEST C: NO COMMUNICATION WITH THE LIGHTING CONTROL MODULE (LCM)

C1-C2:

C2 Continued:

Normal Operation
The headlamps with autolamps, turn signal lamps/hazard flasher lamps, cornering lamps, parking lamps, courtesy lamps, demand lamps, battery saver and backlighting are controlled by the LCM. Voltage is supplied through the central junction box (CJB) on circuit 221 (OG/WH). The LCM is grounded through circuit 676 (PK/OG).

Possible Causes
- fuse
- circuit 221 (OG/WH) open or short to ground
- circuit 676 (PK/OG) open
- LCM