Test D: One Low Beam Headlamp Is Inoperative

PINPOINT TEST D: ONE LOW BEAM HEADLAMP IS INOPERATIVE

D1-D2:

D3:

Normal Operation
The smart junction box (SJB) routes voltage to the LH and RH low beam headlamps through circuits 160 (DB/WH) and 161 (DG/OG) respectively. The low beam circuit changes to circuit 13 (LG/WH) just prior to the headlamps. The headlamps ground flows through circuit 161 (DG/OG) and on to circuit 57 (BK).

Possible Causes
- Fuse
- Circuit 13 (LG/WH) open
- Circuit 57 (BK) open
- Circuit 160 (DB/WH) open
- Circuit 161 (DG/OG) open
- SJB