Test C: One Low Beam Headlamp Is Inoperative

PINPOINT TEST C: ONE LOW BEAM HEADLAMP IS INOPERATIVE

C1:

C1-C2:

C3-C5:

C5-C7:

C7-C9:

C9-C10:

Normal Operation
When the smart junction box (SJB) receives a request for the low beams, the SJB provides voltage through circuits 1338 (WH) and 1336 (LG/WH) to the bussed electrical center (BEC). The BEC then routes the voltage to the LH and RH low beams. Ground for the low beams is provided through circuit 1205 (BK) which is routed through the BEC.

Possible Causes
- Circuit 1205 (BK) open
- Circuit 1336 (LG/WH) open or short to ground
- Circuit 1338 (WH) open or short to ground
- BEC
- SJB