Daytime Running Lamp (DRL) System

WARNING: DRL Relay (R1) gets very hot during operation. Be sure relay has cooled before handling.

The Daytime Running Lamp (DRL) system is designed to turn the high beam headlamps ON with a reduced light output and without illuminating the high-beam indicator in the instrument cluster when the following conditions are met:
^ The ignition switch is in the RUN position.
^ The headlamp switch is in the OFF or PARK position.

The DRL system, which is required by the Canadian government for vehicles sold in Canada, contains the following:
^ a relay (R1) located in the power distribution box (BJB).
^ wiring connected to the headlamp dash panel junction wire.
^ the DRL output of rapidly pulsating short bursts of power which cannot be measured by using most multimeters.