Daytime Running Lights System Description

The daytime running lights system includes the driver's and passenger's MICUs, the left and right high beam headlights, the parking brake switch, and the DRL indication on the multi-information display (MID). The daytime running lights operate with the ignition switch turned to ON (II), the headlights off (headlight switch OFF or in the parking position), and the parking brake released.

When the daytime running lights are on, the MICU turns the high beam headlight control circuit on and off (duty cycle), which provides a reduced voltage (approximately 6-8 volts) to the high beam headlights (via the No. 1 and No. 28 fuses in the driver's under-dash fuse/relay box and No. 1 fuse in the passenger's under-dash fuse/relay box); the high beam headlights come on with reduced brightness. The MICU also sends a signal to the gauge control module, and the DRL indication is indicated on the MID.

NOTE:

The daytime running lights are disabled when the ignition switch is turned to LOCK (0). To keep the daytime running lights from coming on, apply the parking brake switch while the ignition switch is in LOCK (0) position. When you then turn the ignition switch back to ON (II), the daytime running lights will not come on until the parking brake is released.
The headlights revert to normal operation when you turn them on with the headlight switch.