Low Beam Headlamps

The headlamps consist of 2 interchangeable single filament bulbs on each side of the vehicle which provide high and low beams. The lower bulb in the headlamp is the high beam and the upper bulb is the low beam.

The headlamps may be turned ON in 3 different ways:

• When the headlamp switch is placed in the ON position, for normal operation.
• When the headlamp switch is placed in the AUTOMATIC LIGHT position, for automatic lamp control.
• When the headlamp switch is placed in the AUTOMATIC LIGHT position, with the windshield wipers ON in daylight conditions, after a 6 s delay.

The body control module (BCM) controls the headlamps based on the inputs explained above. When a low beam request is received, the BCM applies B+ to both low beam headlamps through the left low beam and right low beam control circuits, illuminating the low beam headlamps.