With Daytime Running Lights (DRL)

Circuit Operation

The head lamps receive battery voltage through the HEAD L and HEAD R Fuses at all times. When the Headlight Switch is in the head position, a ground is provided through the daytime running lights (DRL) controller and the Headlight/Dimmer Switch at G200. When the Headlight Switch is in the OFF or PARK position, a ground is provided through the daytime running lights (DRL) controller and the daytime running lights (DRL) resistor at G101 provided that all conditions for Daytime Running Lights operation are met. High and low-beam selection is provided by grounding the high and low-beam filaments separately. The high-beam filaments are grounded through the Headlight/Dimmer Switch at G200. The low-beam filaments are grounded through the daytime running lights (DRL) controller and the Headlight/Dimmer Switch at G200.

The Daytime Running Lights (DRL) system operates the low-beam head lamps at a lower intensity than the vehicle's regular low-beams. Daytime Running Light system operation is initiated when the daytime running lights (DRL) controller senses all of the following:

^ A charge input signal from the generator at terminal 5, indicating an "engine running" condition.

^ No ground signal from the parking brake switch at terminal 4, indicating that the parking brake is not engaged.

^ A "lights OFF" signal at terminal 11, indicating the Headlight/Dimmer Switch is in either the "OFF" or PARK position.

The daytime running lights (DRL) controller receives battery voltage for system operation at terminal 7 from the IG-COIL METER Fuse whenever the ignition switch is in the "ON" or "START" position. The daytime running lights (DRL) controller is permanently grounded at G201 through terminal 8.