Spot Lamps

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

System Diagram

Courtesy of FORD MOTOR CO.

Spot Lamps

When a spot lamp switch is pressed, a ground is provided to the PDM.

When the PDM detects that the LH spot lamp switch has been pressed, it sends voltage to the spot lamp switch LH indicator and the PDM sends a spot lamps request message over the MS-CAN to the DDM. When the DDM receives the spot lamp request message the DDM voltage to the LH spot lamp (integrated into the exterior mirror turn lamp)

When the PDM detects that the RH spot lamp switch has been pressed, it sends voltage to the spot lamp switch RH indicator and the PDM sends voltage to the RH spot lamp (integrated into the exterior mirror turn lamp)

The PDM enables the spot lamps for use when the vehicle speed is less than 6 mph (10 km/h) and the parking lamps are on.