Test D: One Low Beam Headlamp Is Inoperative

PINPOINT TEST D: ONE LOW BEAM HEADLAMP IS INOPERATIVE

D1-D2:

D3-D5:

D5-D7:

D7-D8:

Normal Operation
Under normal operation, when the headlamps are turned ON, the SJB sends voltage to the headlamp low beams through (LH) circuit 1338 (WH) and (RH) circuit 1336 (LG/WH). Ground for the headlamp low beams is provided through circuit 1205 (BK).

Possible Causes
- An open in circuit 1205 (BK), 1338 (WH) or 1336 (LG/WH)
- A short to ground in circuit 1338 (WH) or 1336 (LG/WH)
- Lamp
- Bussed electrical center (BEC)
- Smart junction box (SJB)