Daytime Running Lamp: Description and Operation

CIRCUIT OPERATION
On vehicles built for sale in Canada, the LOW beam headlamps operate, at reduced intensity, when the ignition switch is in the RUN position and the vehicle is moving.

Power for the Daytime Running Lamp (DRL) module is supplied on circuit F12. This circuit is HOT in the START/RUN position only and protected by a 10 amp fuse located in cavity 10 of the fuse block. Ground for the DRL module is supplied on circuit Z1.

Circuit G9 is used as an input to the DRL module. This circuit connects from the park brake warning switch. When the switch is OPEN the DRL module will operate the LOW beam headlamps