Principles of Operation

Daytime Running Lamps (DRL)

Principles of Operation

The Body Control Module (BCM) controls the Daytime Running Lamps (DRL) by using various inputs to determine whether or not the DRL (Daytime Running Lamps) should be illuminated. These inputs include:

- Ignition status

- Headlamp switch position

- Headlamps on or off

- Transmission gear selection

When the DRL (Daytime Running Lamps) is active, the BCM (Body Control Module) provides a pulse-width modulated voltage to the low beam headlamps. This illuminates the headlamps at a reduced intensity.

The DRL (Daytime Running Lamps) is not a programmable parameter for this vehicle.