Test M

PINPOINT TEST M: THE HAZARD LAMPS ARE INOPERATIVE

Test M1:

Test M1-M3:

Test M4:

Normal Operation
The SJB sends out a voltage reference signal through circuit 385 (WH/RD) to the hazard switch. When the hazard switch is turned on, the voltage signal is routed to ground through circuit 1205 (BK). When the SJB detects the hazard switch on, the SJB sends and controls the supply voltage to the respective turn lamps which then flash approximately 80 times per minute

Possible Causes
- circuit 385 (WH/RD) open
- circuit 1205 (BK) open
- hazard switch
- SJB