The daytime running lights system includes the MICU, the left and right high beam headlights,
the parking brake switch, and the DRL indicator on the gauge control module. 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 4-8 volts) to the high
beam headlights (via the No. 48 and No. 51 fuses in the 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 gauge.

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.