Description
DESCRIPTION
The exterior lighting system for this vehicle includes the following exterior lamp units:
- Cab Clearance Lamps - Cargo and passenger vans equipped with this option have an individual amber clearance lamp unit mounted at the exterior juncture between the front outboard corners of the roof panel and the top of each A-pillar.
- Center High Mounted Stop Lamp - A Center High Mounted Stop Lamp (CHMSL) is standard equipment on all cargo and passenger vans. This lamp is centered on the rear door header panel just above the rear door opening at the back of the vehicle.
- Front Fog Lamps - Vehicles equipped with this option have a separate fog lamp unit mounted near each outboard end of the front bumper, below each front lamp unit.
- Front Lamp Units - A standard equipment halogen or an optional equipment xenon (also known as bi-xenon or High Intensity Discharge/HID) front lamp unit is mounted to the front of each front fender panel on either side of the grille opening. Each halogen front lamp unit includes integral chambers for separate low and high beam headlamp bulbs, a park and turn signal bulb as well as a front side marker bulb. Each xenon front lamp unit includes a single xenon lighting element and an integral electromechanical shutter mechanism to provide both low and high beam headlamps, an electronic xenon headlamp module, and integral chambers for a park and turn signal bulb, a cornering lamp bulb and a front side marker bulb. The cornering (also known as static curve) illumination feature is delivered disabled due to regulatory requirements in some markets, but can be enabled by any dealer using a diagnostic scan tool. A headlamp leveling (also known as Headlamp Range Adjustment/HRA or LWR) actuator motor is also integral to each halogen or xenon front lamp unit.
- License Plate Lamps - Two license plate lamps are standard equipment on all cargo and passenger vans. These lamps are mounted to each upper outboard horizontal surface of the license plate tub formation in the center of the left rear door. On cab and chassis vehicles a license plate lamp bulb is included in each rear lamp unit.
- Marker Lamps - Passenger vans equipped with this option have three individual marker lamps located at specified distances along each lower body side. The spacing of these lamps varies with the optional body length. Cargo vans with this option have individual marker lamps (also known as identification lamps) located at specified distances along each upper body side. The spacing of these lamps also varies with the optional body length.
- Rear Fog Lamp - A standard equipment rear fog lamp bulb is included in the driver side rear lamp unit
- Rear Lamp Units - A standard equipment rear lamp unit is mounted to the rear of each quarter panel on either side of the rear door opening on all cargo and passenger vans. On cab and chassis vehicles a rear lamp unit is secured to a bracket on each side of the rear frame crossmember at the rear of the vehicle. Each rear lamp unit includes integral chambers for a combination tail and rear side marker bulb (cargo and passenger vans) or separate tail and side marker bulbs (cab and chassis), a brake lamp bulb, a turn signal lamp bulb and a backup lamp bulb. On the driver side only, there is also a chamber in the rear lamp unit occupied by a rear fog lamp bulb. Each cab and chassis rear lamp unit also has an integral chamber for a license plate lamp bulb.
- Repeater Lamps - A repeater lamp is integral to each outside rear view mirror mounted at the front of each front door window opening.
These exterior lighting lamp units and their controls are combined to provide the following exterior lighting features:
- Automatic Headlamps - Vehicles with the automatic headlamps option are equipped with a unique headlamp switch (also known as the Rotary Lighting Switch/RLS or Light Switch Module/LSM) that includes an Auto (Automatic) position and have an automatic headlamp sensor that is integral to the Rain Sensor Module (RSM) (also known as the Rain/Light Sensor Module/RLSM) located on the inside surface of the windshield glass, just below the base of the inside rear view mirror, where it is concealed beneath a molded plastic trim cover. When the Auto position of the headlamp switch is selected, the headlamps are turned ON and OFF automatically as ambient light levels dictate.
- Backup Lamps - The backup (or reverse) lamps include a clear bulb, a reflector and a clear lens that are integral to each rear lamp unit.
- Brake Lamps - The brake (or stop) lamps include a clear bulb, a reflector and a red lens that are integral to each rear lamp unit. On passenger and cargo vans, the brake lamps also include the red lens and multiple Light-Emitting Diode (LED) units of the CHMSL.
- Cornering Illumination - Vehicles equipped with the optional xenon headlamps have a chamber integral to each front lamp unit for a cornering lamp. The cornering illumination feature is delivered disabled due to regulatory requirements in some markets, but can be enabled by any dealer using a diagnostic scan tool. When the vehicle is static or moving forward and a turn signal is active, the cornering lamp on the inside of the turn is illuminated. When reverse gear is engaged, the cornering lamps are actuated inversely.
- Daytime Running Lamps - Vehicles manufactured for sale in Canada as well as those vehicles that have the Daytime Running Lamps (DRL) (also known as Constant Headlamp mode) feature enabled, illuminate the park lamp and the low beam headlamp bulb in each front lamp unit to serve as the DRL whenever the engine is running.
- Exterior Lamp Fail-Safe Operation - The Body Control Module (BCM) (also known as the Signal Acquisition and Actuation Module/SAM) provides a fail-safe feature which will automatically turn ON the low beam headlamps and all park lamps when the ignition switch is in the ON position and the BCM detects a problem with the Controller Area Network (CAN) data bus or the BCM microprocessor.
- Exterior Lighting Delay - This feature (also known as exterior lighting delayed switch-OFF) is available on vehicles equipped with optional steering wheel buttons. When enabled, this feature will keep the park lamps and front fog lamps illuminated for about 60 seconds in the dark after the engine is turned OFF and the doors have been closed. This feature is also reactivated for an additional 60 second interval by opening, then closing any door within about ten minutes with the engine still turned OFF.
- Front Fog Lamps - The optional front fog lamps include the bulb, reflector and clear lens of each front fog lamp unit located in the front bumper.
- Hazard Warning Lamps - The hazard warning lamps include the bulbs, reflectors and lenses of each lamp in the right and left, front and rear turn signal circuits.
- Headlamps - Two headlamp systems are available on this vehicle. the standard equipment front lamp units each include two single filament halogen bulbs, one low beam and one high beam, and an adjustable reflector and clear lens. The optional equipment front lamp units each include a single xenon lighting element, an electromechanical shutter mechanism, an electronic xenon lamp module, an adjustable reflector and a clear lens.
- Headlamp Leveling - A headlamp leveling actuator motor on each front lamp unit and, on vehicles with the standard halogen headlamps, a thumbwheel actuated headlamp leveling switch allow manual adjustment of the headlamp beam pattern from inside the vehicle to compensate for changes in vehicle suspension height. On vehicles equipped with optional xenon headlamps, an Automatic Headlamp Leveling Module (AHLM) (also known as adaptive headlamp lighting, Headlamp Range Adjustment/HRA or LWR module) automatically performs these adjustments using inputs from front and rear axle sensors to monitor changes in the vehicle suspension height.
- Locator Lighting - This feature is available on vehicles equipped with optional steering wheel buttons. When enabled, this feature will turn ON the park lamps and front fog lamps for about 40 seconds in the dark after the vehicle is unlocked with a key. The locator lighting also turns OFF prior to expiration of the 40 second interval by opening the driver door, by inserting the key into the ignition lock cylinder or by locking the vehicle with a key.
- Optical Horn - Also known as headlamp flasher or flash-to-pass, the beam selection function of the multi-function switch (also known as the combination switch) control stalk has a momentary position that allows the headlamp high beams to be flashed momentarily, without changing the headlamp beam selection.
- Park Lamps - The front park lamps include the amber bulbs, the reflectors and the clear lenses of the park lamp compartment in both front lamp units and the amber front side marker lamp lenses/reflectors. The rear park lamps include the clear bulbs, reflectors and the red tail and side marker lenses integral to each rear lamp unit, as well as the clear bulbs and lenses of the two license plate lamp units. On vehicles so equipped, the park lamps also include the clear bulbs and amber lenses of the cab clearance lamps and the clear bulbs and amber lenses of the individual marker lamps or identification lamps on each side of the vehicle.
- Position Lamps - Vehicles manufactured for sale in Canada have a position lamps (also known as standing lamps) feature. This feature allows the vehicle operator to turn ON all of the front and rear park lamps circuits for only the left side or only the right side of the vehicle.
- Rear Fog Lamp - The rear fog lamp includes a clear bulb and a red lens and reflector that are integral to the rear lamp unit located on the driver side of the vehicle.
- Turn Signal Lamps - The front turn signal lamps include an amber bulb, a reflector, and a clear lens that are integral to each front lamp unit. The repeater lamps (also known as outside mirror turn signal lamps) on each outside rear view mirror include the amber bulbs and clear lenses of each outside mirror. The rear turn signal lamps include an amber bulb and a clear lens and a reflector that are integral to each rear lamp unit.
Other components of the exterior lighting system for this vehicle include:
- Automatic Headlamp Leveling Module - Vehicles equipped with the optional xenon headlamps have an AHLM located behind the right inner cowl side trim in the front passenger side footwell. The AHLM monitors the vehicle ride height through the front and rear axle sensors, then provides inputs to the headlamp leveling motor on each front lamp unit as appropriate.
- Axle Sensors - Vehicles equipped with the optional xenon headlamps have an axle sensor for both the front and the rear axles, which monitor the suspension height of the vehicle. The front axle sensor is located above the left lower control arm of the front axle. The rear axle sensor is located at the left frame rail just forward of the rear axle.
- Backup Lamp Switch - Vehicles equipped with a manual transmission have a normally open, spring-loaded plunger type backup lamp switch.
- Body Control Module - The Body Control Module (BCM) (also known as the Signal Acquisition and Actuation Module/SAM) is located beneath the driver side end of the instrument panel in the passenger compartment, where it is secured to the fuse and relay block (also known as the SRB). Description.
- Brake Lamp Switch - The brake lamp switch is a two circuit, spring-loaded plunger actuated switch that is secured to the brake pedal support bracket under the instrument panel on the driver side of the vehicle.
- Electronic Shifter Module - Vehicles with an optional electronic automatic transmission have an Electronic Shifter Module (ESM) (also known as the EWM) that is used to perform several functions, including that of the backup lamp switch. Description.
- Hazard Warning Switch - A hazard warning switch is integral to the instrument panel switch pod (also known as the center console switch unit, Switch Bank Module/SBM, Upper Control Panel/UCP or OBF), which is located just below the heater and air conditioner controls in the center bezel of the instrument panel. Description.
- Headlamp Leveling Motor - A headlamp leveling actuator motor is located on the back of each headlamp housing and adjusts the reflector frames for both the low beam and high beam headlamps in unison.
- Headlamp Leveling Switch - On vehicles with the standard equipment halogen headlamps, a thumbwheel actuated headlamp leveling switch is mounted in the left outboard air outlet bezel, on the instrument panel outboard of the headlamp switch.
- Headlamp Switch - A headlamp switch is mounted in the left outboard air outlet bezel, on the instrument panel outboard of the steering column.
- Multi-Function Switch - The multi-function switch (also known as the combination switch) is secured to and directly connected to the back of the clockspring/Steering Control Module (SCM) (also known as the steering column module/MRM) near the top of the steering column below the steering wheel and is completely concealed beneath the steering column shrouds. Only the switch control stalk and control knob extending from the left side of the steering column are visible, while the remainder of the switch is concealed beneath the steering column trim. The multi-function switch contains the turn signal switches and the headlamp beam selection switch.
- Park Brake Switch - A park brake switch is secured to the park brake lever mechanism located near the inboard rear corner of the driver side front seat riser.
- Rain Sensor Module - A RSM is used on vehicles equipped with the optional automatic wiper and automatic lights features. The RSM is secured to the inside surface of the windshield glass, just below the base of the inside rear view mirror, where it is concealed beneath a molded plastic trim cover. Description.
- Steering Control Module - The SCM is integral to the clockspring, which is secured near the top of the steering column below the steering wheel and is completely concealed beneath the steering column trim. Description.
- Trailer Tow Connector - Vehicles equipped with a factory-installed trailer towing electrical package have a heavy duty 7-way trailer tow connector installed in a bracket on the trailer hitch receiver platform.
- Trailer Module - Vehicles equipped with a factory-installed trailer towing electrical package have a Trailer Module (TM) (also known as the trailer connection unit, Trailer Lighting Module/TLM or AAG) located within the driver side front seat riser that controls all of the lighting outputs to the trailer lighting circuits of the 7-way trailer tow connector, provides feedback to the driver through the ElectroMechanical Instrument Cluster (EMIC) when a problem is detected in any of the trailer wiring circuits and provides trailer connection status electronic messages to other electronic modules in the vehicle.
- Xenon Lamp Module - Vehicles equipped with the optional xenon headlamps have a xenon lamp module secured to the underside of each front lamp unit. Each module controls the xenon lighting igniter and actuates the electromechanical high/low beam shutter mechanism and the cornering lamp within the front lamp unit to which it is mounted.
Hard wired circuitry connects the exterior lighting system components to the electrical system of the vehicle. These hard wired circuits are integral to several wire harnesses, which are routed throughout the vehicle and retained by many different methods. These circuits may be connected to each other, to the vehicle electrical system and to the exterior lighting system components through the use of a combination of soldered splices, splice block connectors, and many different types of wire harness terminal connectors and insulators. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices and grounds.