Principles of Operation

Daytime Running Lamps (DRL)


Principles of Operation

NOTE: When installing a new Lighting Control Module (LCM), it must be configured for this feature if originally equipped (standard for Canadian vehicles). Refer to Information Bus.

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

- Ignition switch position
- Headlamp switch position
- Headlamps on or off
- Transmission gear selection

The LCM can be configured to turn the DRL on for this vehicle. Refer to Information Bus for information on this programmable parameter.