Test E: The Autolamps Are On Continuously

PINPOINT TEST E: THE AUTOLAMPS ARE ON CONTINUOUSLY

E1-E5:

E5-E7:

E7-E10:

E10-E12:

E13:

Normal Operation
The smart junction box (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 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 defaults the headlamps and parking lamps on.

Possible Causes
- Circuit 1203 (BK/LB) open
- Circuit 1205 (BK) open
- Circuit 1399 (DB/WH) open, short to ground or voltage
- Circuit 1400 (TN/WH) open, short to ground or voltage
- Circuit 1401 (BK/LG) open, short to ground or voltage
- Circuit 1402 (RD/WH) open, short to ground or voltage
- Circuit 1416 (YE/WH) open or short to voltage
- Light sensor
- Headlamp switch
- SJB