Test K: The Turn Signal Lamps Are Inoperative
PINPOINT TEST K: THE TURN SIGNAL LAMPS ARE INOPERATIVEK1-K3:
K3-K4:
Normal Operation
The smart junction box (SJB) sends 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 switched to the LH or RH TURN positions, the voltage signal is routed to ground. When the SJB detects the multifunction switch in the LH or RH TURN position, the SJB sends voltage to the appropriate turn lamps.
All the turn lamps are wired to the SJB. The timed on/off cycle is determined by the SJB and is set to flash approximately 80 times per minute if both the front and rear turn lamps operate correctly. If only an individual turn signal lamp operates, the SJB flashes the remaining turn lamp approximately 160 times per minute.
Possible Causes
- Circuit CLS39 (VT/WH) open
- Circuit CLS41 (GY/YE) open
- Multifunction switch
- SJB