Principles of Operation
WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
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 MODULE CONFIGURATION
.
The LCM controls the 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