Exterior Lighting

EXTERIOR LIGHTING

Headlamps
The headlamp system is a dual-beam pattern system. It consists of a low and high beam, with a replaceable bulb. The lighting control module (LCM) supplies voltage to the headlamps when demanded. The LCM is located behind the LH instrument panel lower insulator rearward of the accelerator pedal.

The LCM monitors the headlamp switch. If a fault is detected with the headlamp switch inputs, the LCM defaults the exterior lights on.

The headlamps are vented to equalize pressure. When moist air enters the headlamp through the vents, there is a possibility that condensation can occur. This condensation is normal and will clear within 45 minutes of headlamp operation.

Autolamps
The autolamp system provides light sensitive automatic on/off control of the exterior lamps. The autolamp system keeps the exterior lamps on for a pre-selected period of time after the ignition switch is turned to the OFF position. The pre-selected time lapse is adjustable up to approximately 3 minutes.

To program the time lapse, carry out the following sequence:

1. NOTE: Steps 2 through 5 must be carried out within a 10-second period.

Start with the ignition switch in the OFF position and the headlamp switch in the AUTOLAMPS position.

2. Place the headlamp switch in the OFF position.
3. Place the ignition switch in the RUN position.
4. Place the ignition switch in the OFF position.
5. Place the headlamp switch in the AUTOLAMPS position.
- At this point, the exterior lamps turn on.

6. At the desired autolamp time delay, place the headlamp switch in the OFF position.
- At this point, the exterior lamps turn off and the time delay is set.

Stoplamps
The stoplamps are supplied voltage when the brake pedal is applied.

Turn Signal/Hazard and Cornering Lamps
When the multifunction switch is placed in the LH or RH TURN positions, the multifunction switch routes voltage to the LH or RH turn signal lamps. The LCM then cycles the voltage on and off approximately 80 times per minute. If a front or rear turn bulb is inoperative, the LCM cycles the voltage on and off approximately 160 times per minute.

The hazard switch is integral to the multifunction switch. When the hazard switch is engaged, the multifunction switch supplies voltage to all the turn lamps. The LCM cycles the voltage on and off approximately 80 times per minute. If both LH turn bulbs or both RH turn bulbs are inoperative, the LCM cycles the voltage on and off approximately 160 times per minute.

When the multifunction switch is placed in the LH or RH TURN positions and the parking lamps are on, the multifunction switch provides a ground for the cornering lamps.

Parking Lamps
The LCM supplies voltage to the parking lamps when demanded.

Fog Lamps
The fog lamp switch is integral to the headlamp switch. When the fog lamp switch is engaged, voltage is routed to the fog lamp relay coil, which then energizes and routes voltage to the fog lamps. The fog lamps can be turned on when the ignition switch is in the RUN or ACC position, the parking lamps are on, and the high beam headlamps are off.

Reversing Lamps
When the transmission is placed in REVERSE, the digital transmission range (TR) sensor routes voltage to the reversing lamps.

Police Option
In addition to the above listed components, a police option vehicle may include the following:
- Police glove compartment relay/fuse center - Police luggage compartment relay/fuse center
- Package tray lamps
- Decklid flashing lamps
- Alternating flashing headlamps
- Rear deck light emitting diode (LED) flasher
- Strobe lamps

Daytime Running Lamps (DRL)
For additional information, refer to Lighting and Horns.