Test H: The Autolamps Are On Continuously

PINPOINT TEST H: THE AUTOLAMPS ARE ON CONTINUOUSLY

H1-H5:

H6-H9:

H9-H11:

Normal Operation
The smart junction box (SJB) sends voltage reference signals to the headlamp switch through circuits 1400 (TN/WH), 1401 (BK/LG), 1402 (RD/WH) and 1399 (DB/WH). At any given time, one voltage reference signal is routed to ground by the headlamp switch, to circuit 1205 (BK), to indicate the headlamp switch position.

The SJB also sends a reference signal to the light sensor through circuit 1416 (YE/WH). When the headlamp switch is placed in the AUTOLAMPS ON position, the SJB monitors the ambient light conditions based on the input received from the light sensor. When the ambient light level has reached a point (determined by the internal programming of the SJB), the SJB provides voltage to the headlamps, parking and license plate lamps. Ground for the light sensor is provided through circuit 1205 (BK).

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