Section 132 (Wiper System & Washer System): Wipers/Washers: Description: Notes
An electrically operated intermittent wiper and washer system is standard factory-installed safety equipment on this model (Fig 1 ). The wiper and washer system includes the following major components, which are described in further detail else-where in this service information:
- Check Valve - The washer system check valve is integral to the wye fitting located in the washer plumbing between the cowl plenum washer hose and the washer nozzles, and is concealed beneath the cowl plenum cover/grille panel at the base of the windshield.
- Front Control Module - The Front Control Module (FCM) is integral to the Integrated Power Module (IPM). The IPM is located in the engine compartment, near the battery. (Refer to INTEGRATED POWER MODULE ).
- Instrument Cluster - In this model, the instrument cluster is also sometimes referred to as the Cab Control Node (CCN). The instrument cluster is located in the instrument panel above the steering column opening, directly in front of the driver. (Refer to INSTRUMENT CLUSTER ).
- Multi-Function Switch - The multi-function switch is located on the top of the steering column, just below the steering wheel. The multi-function switch includes a control stalk that extends through an opening on the left side of the steering column shrouds and a control knob on the end of the stalk is dedicated to providing all of the driver controls for the wiper and washer systems. (Refer to MULTI-FUNCTION SWITCH ).
- Washer Fluid Level Switch - The washer fluid level switch is located in a dedicated hole on the outboard side of the washer reservoir in the engine compartment.
- Washer Nozzle - Two fluidic washer nozzles are secured with integral snap features to dedicated openings in the cowl plenum cover/grille panel located near the base of the windshield.
- Washer Plumbing - The plumbing for the washer system consists of rubber hoses and molded plastic fittings. The plumbing is routed along the right side of the engine compartment from the washer reservoir, and through a trough near the right end of the cowl plenum cover/grille panel into the cowl plenum to the washer nozzle fittings.
- Washer Pump/Motor - The electric washer pump/motor unit is located in a dedicated hole on the rearward facing surface of the washer reservoir in the engine compartment.
- Washer Reservoir - On all models except those with an optional diesel engine, the washer reservoir is secured by integral mounting tabs and a snap feature to slots in the right side of the cooling module shroud in the engine compartment. On models with an optional diesel engine, the washer reservoir is secured by screws to the back of the upright left vertical member of the radiator support in the engine compartment. The washer reservoir filler neck is accessed from the engine compartment.
- Wiper Arm - The two wiper arms are secured with integral latches to the serrated ends of the two wiper pivot shafts, which extend through the cowl plenum cover/grille panel located near the base of the windshield.
- Wiper Blade - The two wiper blades are secured to the two wiper arms with an integral latch, and are parked on the glass near the bottom of the windshield when the wiper system is not in operation.
- Wiper High/Low Relay - The wiper high/low relay is an International Standards Organization (ISO) micro relay located in the Integrated Power Module (IPM) in the engine compartment near the battery.
- Wiper Module - The wiper pivot shafts are the only visible components of the wiper module. The remainder of the module is concealed within the cowl plenum area beneath the cowl plenum cover/grille panel. The wiper module includes the wiper module bracket, four rubber-isolated wiper module mounts, the wiper motor, the wiper motor crank arm, the two wiper drive links, and the two wiper pivots.
- Wiper On/Off Relay - The wiper on/off relay is an International Standards Organization (ISO) micro relay located in the Integrated Power Module (IPM) in the engine compartment near the battery.
Hard wired circuitry connects the wiper and 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 wiper and 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 SYSTEM WIRING DIAGRAMS article. 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.