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Home >> Jeep Truck >> 2010 >> Commander 4WD V8-5.7L >> Repair and Diagnosis >> Wiper and Washer Systems >> Description and Operation >> Wipers and Washers - Description >> Rear

Rear






REAR





An electrically operated fixed interval intermittent rear wiper and washer system is standard factory-installed equipment on this vehicle. The rear wiper and 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.
- Front Control Module (1) - The Front Control Module (FCM) is integral to the Integrated Power Module (IPM). The FCM/IPM is located in the engine compartment, near the battery. Integrated Power Module (IPM) - Description.
- Rear Washer Nozzle (3) - The fluidic rear washer nozzle is integral to the Center High-Mounted Stop Lamp (CHMSL) located on the liftgate outer panel above the liftgate flip-up glass. The rear washer nozzle includes an integral check valve.
- Rear Washer Plumbing - The plumbing for the rear washer system consists of rubber hoses and molded plastic fittings. The plumbing is routed along the left side of the engine compartment from the washer reservoir, through the dash into the passenger compartment, up the left cowl side and A-pillar where it is connected to a hose integral to the headliner that runs from the A-pillar to the rear washer nozzle on the upper liftgate header.
- Rear Wiper Arm And Blade (5) - The single rear wiper arm is secured by a nut directly to the rear wiper motor output shaft, which extends through the center of the liftgate outer panel near the base of the liftgate flip-up glass. The rear wiper blade is secured to the rear wiper arm with an integral latch, and is parked off of the glass when the rear wiper system is not in operation.
- Rear Wiper Arm Park Ramp - The molded rubber rear wiper arm park ramp is secured with a screw to the liftgate outer panel to the right of the rear wiper motor output shaft bezel. When the rear wiper system is not in operation, the rear wiper arm is parked off of the glass on this ramp so that it will not interfere with or be damaged by the liftgate flip-up glass operation.
- Rear Wiper Module (4) - The rear wiper module includes the module bracket, two rubber-isolated wiper module mounts and the rear wiper motor. The wiper motor output shaft is the only visible component of the rear wiper module. The remainder of the module is concealed within the liftgate beneath the liftgate glass opening.
- Rear Wiper Relay - The rear wiper relay is an International Standards Organization (ISO) micro relay that is soldered into the Junction Block (JB) in the passenger compartment, underneath the instrument panel on the driver side of the vehicle.
- Right Multi-Function Switch (2) - 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.
- Washer Reservoir - The rear washer system shares a single reservoir and reversible pump with the front washer system, but has its own dedicated plumbing. The washer reservoir is concealed between the left inner fender shield and the left outer fender panel, ahead of the left front wheel house splash shield. The filler neck and cap are the only visible components of the reservoir and, are accessed from the left front corner of the engine compartment.

Hard wired circuitry connects the rear 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 rear 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 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.

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