Pinpoint Test 1

PINPOINT TEST 1: ONE OR MORE STOPLAMPS ARE INOPERATIVE

Normal Operation
The smart junction box (SJB) provides voltage to the stoplamp switch through circuit (L/R). When the brake pedal is applied, voltage is routed to the high mounted stoplamp and the multifunction switch through circuit (V/W). The multifunction switch then routes the voltage to the LH and RH rear lamps through circuits (V) and (Y), respectively. Ground is provided through circuit (B/Y) for the high mounted stoplamp and through circuit (B/Y) for the rear lamps.

This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Stoplamp switch
- High mounted stoplamp
- Multifunction switch
- SJB

CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Step 1-Step 5:

Step 6-Step 11:

Multifunction Switch, Lamp Portion Component Test: