Test E
PINPOINT TEST E: THE AUTOLAMPS ARE ON CONTINUOUSLYTest E1-E3:
Test E4-E6:
Test E6-E7:
Test E8-E11:
Test E11-E13:
Normal Operation
The SJB monitors the headlamp switch through circuits 1399 (DB/WH) (autolamps ON position), 1400 (TN/WH) (headlamp switch OFF position), 1401 (BK/LG) (parking lamps ON position) and 1402 (RD/WH) (headlamps ON position). The headlamp switch ground signal is sent through circuit 1205 (BK). After receiving the signal for the autolamps ON request from the headlamp switch, the SJB then monitors the light sensor ambient light conditions by sending a signal to the light sensor through circuit 1416 (YE/WH). The light sensor is grounded through circuit 1203 (BK/LB). If a problem is detected with any of the voltage reference signals to the headlamp switch, the SJB will default the headlamps and parking lamps ON.
Possible Causes
- circuit 1203 (BK/LB) open
- circuit 1205 (BK) open
- circuit 1399 (DB/WH) open, short to power or short to ground
- circuit 1400 (TN/WH) open, short to power or short to ground
- circuit 1401 (BK/LG) open, short to power or short to ground
- circuit 1402 (RD/WH) open, short to power or short to ground
- circuit 1416 (YE/WH) open or short to power
- light sensor
- headlamp switch
- SJB