High Beam System Operation

The high-beam headlamp operation is controlled using the turn signal/headlamp switch lever on the steering column. In order to change headlamp operation from low-beam to high-beam, push the switch lever toward the instrument panel (until the detent is felt) and release. With the switch lever in the high beam position, ground is provided to the DRL control module through the turn signal/headlamp switch and splice pack 250 to G203. With voltage applied at all times through the dome fuse to the DRL control module and ground is provided through SP261 and SP254 to G103, the DRL control module provides a ground to the coil of the dimmer relay. Since voltage is being applied to the dimmer relay coil, it becomes energized. Voltage is then applied through the closed contacts of the dimmer relay and the head fuses (LH-UPR) and (RH-UPR) to the high beam lamps in the headlamps. Since ground is provided to the headlamps through the closed contacts of the energized DRL relay and SP254 to G103, the high beam lamps light. The high-beam indicator (blue) in the instrument cluster will light during high-beam headlamp operation. In order to change headlamp operation back to low-beam operation, pull the turn signal switch lever toward the driver (until the detent is felt) and release.