Section 51 (Wiper System & Washer System): Wipers/Washers: Description
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 elsewhere in this service information:
- Central Timer Module -The Central Timer Module (CTM) is located on the left cowl side inner panel under the driver side outboard end of the instrument panel, where it is concealed behind the inner cowl side trim. The CTM contains a microprocessor and software that allow it to provide the many electronic functions and features not available with most conventional hard wired wiper and washer systems. The CTM provides the proper wiper and washer system features based upon the monitored inputs. The CTM circuitry monitors hard wired switch inputs, as well as message inputs received from other vehicle electronic modules on the Programmable Communications Interface (PCI) data bus network. (Refer to CENTRAL TIMER MODULE ).
- Multi-Function Switch -The multi-function switch is secured to the left side of the steering column, just below the steering wheel. Only the control stalk for the multi-function switch is visible, the remainder of the switch is concealed beneath the steering column shrouds. The multi-function switch contains all of the switches for both 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 near the front of the windshield washer reservoir on the right outboard end of the upper radiator shroud.
- Washer Nozzles -The dual 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. The washer plumbing fittings for the washer nozzles are concealed beneath the cowl plenum cover/grille panel.
- Washer Pump/Motor -The washer pump/motor unit is located in a dedicated hole near the bottom of the windshield washer reservoir on the right end of the upper radiator shroud.
- Washer Reservoir -The washer reservoir is integral to and located on the right end of the upper radiator shroud. The washer reservoir filler is accessed from the right front corner of the engine compartment.
- Wiper Arms -The two wiper arms are secured to the two wiper pivots, which extend through the cowl plenum cover/grille panel located near the base of the windshield.
- Wiper Blades -The two wiper blades are secured to the two wiper arms, and are parked on the glass near the bottom of the windshield when the wiper system is not in operation.
- Wiper Module -The wiper pivots are the only visible components of the wiper module. The remainder of the module is concealed within the cowl plenum beneath the cowl plenum cover/grille panel. The wiper module includes the module bracket, the single wiper motor, the wiper linkage, and the two wiper pivots.
- Wiper Relay -The wiper relay is located in the Power Distribution Center (PDC) 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 SYSTEM WIRING DIAGRAMS .