Taurus V6-182 3.0L DOHC SHO (1992)
Daytime Running Lamp Control Unit: Description and Operation
The Daytime Running Lamps (DRL) System operates the vehicle's Hi Beam Headlamps at reduced power during the daytime to make the vehicle more
visible to other drivers.
With the Ignition Switch in RUN, the park brake released and the Headlamps turned OFF, the DRL Module outputs a pulsing voltage at pin 8 to operate
the Hi Beam Headlamps at reduced intensity. When the DRL System is operating, the Hi Beam Indicator is not illuminated.
Applying the parking brake or turning on the Headlamps disables the DRL System. Applying the parking brake grounds pin 6 of the DRL Module.
Turning on the Headlamps to the lo beam position applies battery voltage to pin 7 of the Module (and removes the ground input that the DRL Module
senses through the Lo Beam Headlamps). Turning on the Headlamps in the hi beam position applies 12 volts to pin 8 of the DRL Module, causing the
Module to output 12 volts at pin 1, and illuminating the Hi Beam Indicator.
The diode shown inside the DRL Module prevents low brake fluid level from disabling the DRL System.
The DRL System is used only on vehicles sold in Canada.
NOTE: The headlamps may flicker during engine start-up and shut-down on DRL-equipped vehicles if the A/C-Heater Blower Motor is turned ON. This
is a normal condition.
Also, during Lo Beam Headlamp operation on a DRL-equipped vehicle, the Hi Beam Indicator will not illuminate when using the flash-to-pass feature.
