Headlamp

HEADLAMP

An electrically operated headlamp washer system is optional factory-installed equipment on this vehicle when it is manufactured for certain export markets. The headlamp washer system includes the following major components, which are described in further detail elsewhere in this service information:

- ElectroMechanical Instrument Cluster - The ElectroMechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN) is located on the instrument panel directly in front of the driver Instrument Cluster - Description.
- Headlamp Washer Nozzle - A headlamp washer nozzle is secured to the front fascia beneath each front lamp unit.
- Headlamp Washer Pump/Motor - The electric headlamp washer pump/motor unit is located in a dedicated hole on the rearward facing side of the washer reservoir, on the left side of the cooling module in the engine compartment. This high pressure pump is located above and to the left of the reversible front and rear washer pump/motor unit on the reservoir.
- Headlamp Washer Plumbing - The plumbing for the headlamp washer system consists of large diameter rubber hoses and molded plastic fittings. The plumbing is routed to the washer nozzles on the front fascia from the washer reservoir. The connections at the headlamp washer pump and the two headlamp washer nozzles feature unique quick-connect fittings.
- Headlamp Washer Relay - The headlamp washer relay is an International Standards Organization (ISO) relay that is located near the Totally Integrated Power Module (TIPM) in the engine compartment near the battery.
- Right Multi-Function Switch - The right (wiper) multi-function switch and the left (lighting) multi-function switch are secured to brackets integral to the clockspring housing on the top of the steering column just below the steering wheel. The right multi-function switch is connected by a short jumper harness to the Steering Control Module (SCM), which is internal to the left multi-function switch housing. Only the switch control stalk extending from the right side of the steering column is visible, while the remainder of the switch is concealed beneath the steering column shrouds. The right multi-function switch is dedicated to providing all of the driver controls for both the front and rear wiper and washer systems.
- Steering Control Module - The Steering Control Module (SCM) is internal to the left multi-function switch housing, which is secured to a bracket integral to the left side of the clockspring housing on the top of the steering column just below the steering wheel. Only the left switch control stalk extending from the left side of the steering column is visible, while the remainder of the switch housing containing the SCM is concealed beneath the steering column shrouds Steering Column Module - Description.
- Totally Integrated Power Module - The Totally Integrated Power Module (TIPM) is located in the engine compartment, near the battery Totally Integrated Power Module (TIPM) - Description.
- Washer Reservoir - A unique washer reservoir is used on vehicles with the optional headlamp washer system, which has dedicated provisions for the headlamp washer pump and plumbing. This reservoir is mounted in the same location and using the same mounting hardware as is used for vehicles without the headlamp washers. The reservoir is located on the left side of the cooling module in the engine compartment.

Hard wired circuitry connects the headlamp washer 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 headlamp washer 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.