Test B: The Low Beams Are Inoperative

PINPOINT TEST B: THE LOW BEAMS ARE INOPERATIVE

B1-B2:

B3-B4:

B4-B6:

B6-B7:

B8:

Normal Operation
The headlamp switch is provided switched voltage from the central junction box (CJB) through circuit 15-LE29 (GN/BK). When the headlamp switch is placed in the HEADLAMPS ON position, voltage is routed to the multifunction switch through circuit 15S-LE14 (GN/RD). The voltage passes through the multifunction switch to the low beam relay coil through circuit 15S-LE19 (GN/BU). The low beam relay coil is provided ground through circuit 91-LE19 (BK/BU). Supply voltage to the low beam relay is provided by the battery junction box (BJB) through circuit 30-LE20 (RD). When the low beam relay is energized, voltage is routed to the low beam headlamps.

Possible Causes
- Fuse
- Circuit 15-LE29 (GN/BK) open
- Circuit 15S-LE14 (GN/RD) open
- Circuit 15S-LE19 (GN/BU) open
- Circuit 30-LE20 (RD) open
- Circuit 91-LE19 (BK/BU) open
- Low beam relay
- Headlamp switch
- Multifunction switch