Exterior Lighting

Exterior Lighting

NOTE: The perimeter lighting feature can be enabled or disabled (if equipped). When enabled, the exterior lamps are illuminated when the UNLOCK button is pressed on the Remote Keyless Entry (RKE) transmitter. Refer to Doors, Hood and Trunk &/or Locks for programming and diagnostic information.

NOTE: The Smart Junction Box (SJB) is also known as the Generic Electronic Module (GEM).

The exterior lighting system consists of the following components:

- Headlamp assemblies
- Fog lamps
- Auxiliary turn signals (mounted in the exterior rear view mirrors)
- SJB
- Stoplamp switch
- Light sensor
- Headlamp switch
- Multifunction switch
- Hazard/Passenger Air Bag Deactivation (PAD) indicator/traction control switch
- Rear lamp assemblies
- Reversing lamps
- License plate lamps
- Auxiliary marker lamps (Raptor only)

Battery Saver

NOTE: Time-out is 1 minute if the vehicle has less than 80 km (50 miles).

The battery saver is internal to the SJB and provides automatic shut-off of the headlamps and parking lamps after 10 minutes in order to save battery voltage. A timer is started when the ignition switch is turned to the OFF position with the headlamp switch in the HEADLAMPS ON position, or when the headlamp switch is placed in the HEADLAMPS ON position with the ignition switch off. When the time-out period has elapsed, the voltage is automatically shut off to the lamps by the battery saver.

The battery saver does not control the parking lamps if the headlamp switch is in the PARKING LAMPS ON position.

Lamp Assembly Condensation

Exterior lamps are vented to accommodate normal changes in pressure. Condensation can be a natural by-product of this design. When moist air enters the lamp assembly through the vents, there is a possibility that condensation can occur if the temperature is cold. When normal condensation occurs, a thin film of mist can form on the interior of the lens. The thin mist eventually clears and exits through the vents during normal operation. Time to clear the lens of acceptable mist varies with ambient humidity and lamp types. Normal condensation clears from any lamp in 48 hours under dry conditions.

Do not replace a lamp assembly with acceptable levels of condensation such as:

- presence of thin mist (no streaks, drip marks or droplets are present)
- fine mist covers less than 50% of the lens

Examples of unacceptable moisture (usually caused by a lamp housing leak):

- water puddling inside the lamp
- large water droplets, drip marks or streaks present on the interior of the lens

Headlamps

The headlamp system is a dual-beam pattern system. It consists of replaceable low/high beam bulbs.

The SJB supplies voltage to the headlamps when demanded. If the headlamps are on when the ignition switch is turned off, the battery saver feature turns off the headlamps after 10 minutes have elapsed.

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 (20 seconds is the factory default setting). The pre-selected time lapse is adjustable up to approximately 3 minutes. To change the autolamps time delay, refer to Autolamps Time Delay Adjustment Autolamps Time Delay Adjustment.

Headlamps On With Wipers On Feature

When the headlamp switch is in the AUTOLAMPS ON position and the front wipers are on for more than 3 seconds (except during a mist wipe or while the wipers are on to clear washer fluid during a wash condition), the exterior lamps are turned on. The exterior lamps are turned off when the ignition switch is changed to the OFF or ACC position, the headlamp switch is placed in the OFF position, or the front wipers are off for more than 30 seconds. The exception to this is when the exterior lights are on because of darkness determined by the light sensor.

Refer to Wiper and Washer Systems for diagnosis of the headlamps on with wipers on feature.

Stoplamps

The stoplamp switch is located on the brake pedal assembly. The rear lamps and high mounted stoplamp are supplied voltage when the brake pedal is applied. The rear lamps are combination stop/turn lamps.

Turn Signal/Hazard Lamps

When the multifunction switch is placed in the LH or RH TURN position, the SJB routes voltage to the LH or RH turn signal lamps. The SJB cycles the voltage on and off approximately 80 times per minute. If a front or rear turn bulb is inoperative, the SJB cycles the voltage on and off approximately 160 times per minute.

The hazard flasher switch is located on the center instrument panel finish panel and is part of the PAD indicator. When the hazard flasher switch is pressed, the SJB supplies voltage to all the turn lamps. The SJB cycles the voltage on and off approximately 80 times per minute.

The front park/turn indicator lamp is integrated into the headlamp assembly.

The rear turn lamps share functionality with the stoplamps.

Parking Lamps

The SJB supplies voltage to the parking lamps when demanded.

The front park/turn indicator lamp and side lamp are integrated into the headlamp assembly.

The rear parking lamps are located in the rear lamp assemblies.

Raptor vehicles also have LED marker lamps located in the grille and at each corner of the vehicle.

Fog Lamps

The fog lamp switch is integrated into the headlamp switch. 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

For vehicles equipped with a 4R70E or 4R75E transmission, the digital Transmission Range (TR) sensor controls the reversing lamps.

For vehicles equipped with a 6R80 transmission, the Transmission Control Module (TCM) controls the reversing lamps.

When the transmission is placed in REVERSE (R), the reversing lamps relay is energized, providing voltage to the reversing lamps. The reversing lamps are located within the rear lamp assemblies.

Trailer Tow

The Battery Junction Box (BJB) supplies voltage to the trailer tow stop/turn, parking and reversing lamps. When the vehicle's rear stop/turn or parking lamps are illuminated, voltage is also supplied to a corresponding trailer tow relay (coil side) located in the BJB. When the reversing lamps are illuminated, voltage is also routed through BJB fuse 58 (15A) to the trailer tow connector for the trailer reversing lamps.

The trailer tow battery charge relay provides voltage to the trailer tow connector when the ignition switch is in the RUN position.

The vehicle may be equipped with a factory manufactured Trailer Brake Control (TBC) module. For diagnostic information, refer to Trailer Brake Control Module.

On vehicles not equipped with a factory manufactured TBC module, the vehicle is equipped with circuitry to support trailer tow electric brakes.

Daytime Running Lamps (DRL)

The Daytime Running Lamps (DRL) system operates the low beam headlamps at a reduced intensity.

The SJB supplies voltage to illuminate the low beam headlamps at a reduced intensity when the following conditions are met:

- The ignition switch is in the RUN position.
- The headlamps have not been turned on by the autolamp system or the headlamp switch.
- The transmission is not in PARK (P).

The SJB can be configured to turn the DRL on for this vehicle. Refer to Information Bus for programmable parameter information.