Daytime Running Lamp Control Unit: Description and Operation

On vehicles equipped with Daytime Running Lamps (DRL) (Canada only), they are controlled by the Daytime Running Lamp Module. The DRL module is attached to the Junction Block. The Junction Block is located on the left side of the instrument panel.

The DRL allows the high beam headlamps to illuminate at reduced power when the ignition switch is in the RUN position with the high and low beam headlamp switches in the OFF position. The Park Brake must be released and the Brake Fluid Level switch must be in the OPEN position to allow the headlamps to operate in DRL mode. The daytime running lamps will go out when the headlamp switch is turned ON. The passing light feature will flash bright high beams while the daytime running lamps are activated.