Test J: The Turn Signal Lamps Are Inoperative

PINPOINT TEST J: THE TURN SIGNAL LAMPS ARE INOPERATIVE

Normal Operation
The smart junction box (SJB) sends voltage reference signals to the multifunction switch through circuit CLS39 (VT/WH) (LH turn input) and circuit CLS41 (GY/YE) (RH turn input). When the multifunction switch is placed in the LH or RH TURN positions, the voltage signal is routed to ground through circuit GD134 (BK/VT). When the SJB detects the multifunction switch in the LH or RH TURN position, the SJB sends voltage to the appropriate turn lamps.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Multifunction switch
- SJB

J1:

J1-J3:

J3-J4: