Pinpoint Test 1

PINPOINT TEST 1: BOTH HEADLAMPS ARE INOPERATIVE

Step 1:

Step 2 - 5:

Normal Operation
The SJB receives power from the BJB through circuits 1682 (R/LB), 1695 (Y/W) and 54 (LG/Y). The SJB sends a reference signal to the multifunction switch through circuit (R/Y). When the multifunction switch is switched to the headlamps ON position, the voltage signal is routed to ground through circuit (B/W). When the SJB detects the multifunction switch is in the headlamps ON position, the SJB sends voltage to the headlamps.

Possible Causes
- circuit (LG/Y) open
- circuit (B/W) open
- circuit (R/Y) open
- circuit (R/LB) open
- circuit (Y/W) open
- multifunction switch
- SJB