Test P: The Hazard Lamps Are Inoperative

PINPOINT TEST P: THE HAZARD LAMPS ARE INOPERATIVE

P1:

P2-P4:

P4-P5:

Normal Operation
The smart junction box (SJB) sends a reference signal to the hazard switch through circuit 1689 (RD/WH). When the hazard switch is pressed, the voltage signal is routed to ground through circuit 570 (BK/WH). When the SJB detects a hazard lamps request, the SJB sends voltage to all the turn lamps.

The timed on/off cycle is determined in the SJB and is set to flash approximately 80 times per minute if all hazard lamps operate correctly.

Possible Causes
- Circuit 1689 (RD/WH) open
- Circuit 570 (BK/WH) open
- Hazard switch
- SJB