Daytime Running Lamp: Testing and Inspection

If the park brake switch closes, the Daytime Running Lamp (DRL) will not turn on the headlamps. The DRL senses if the park brake switch closes on circuit G9.

^ Circuit L20 also connects to cavity 1 of the multifunction switch 4-way connector.

^ Circuit Z1 provides a ground for the headlamps.

^ Cavity 7 (circuit L20) of the headlamp switch connector has a jumper that feeds the DRL module.

^ Check for a blown fuse in circuit A1 or G5.

^ The headlamp switch has a 24 amp circuit breaker that feeds circuit L20.