Washer Nozzles And Plumbing; Washer Pump; Washer Reservoir - Dodge ram truck 3500 1996 Service Manual

B R WIPER AND WASHER SYSTEMS 8K - 3
D E S C R I P T I O N A N D O P E R A T I O N (Continued)
WASHER RESERVOIR
The washer fluid reservoir is mounted to the left
side of the radiator fan shroud i n the engine com­
partment. The washer pump and motor unit has a
threaded nipple, which is press-fit into a grommet
seal inserted in a hole in the bottom of the reservoir.
The reservoir also has a provision for a low washer
fluid level sensor. Refer to Group 8E - Instrument Panel
Systems for diagnosis and service of the sensor. The res­
ervoir and filler cap are each available for service.
WASHER PUMP
The washer pump and motor are mounted near the
bottom of the washer reservoir. A threaded nipple on
the pump housing is press-fit into a rubber grommet
seal installed in the bottom of the reservoir.
A permanently lubricated and sealed motor is coupled
to a rotor-type pump. Washer fluid is gravity-fed from
the reservoir to the pump. The pump then pressurizes
the fluid and forces it through the plumbing to the noz­
zles, when the motor is energized. The pump and motor
cannot be repaired. I f faulty, the entire washer pump
and motor unit must be replaced.
WASHER NOZZLES AND PLUMBING
Pressurized washer fluid is fed through a single
hose, attached to a nipple on the washer pump, to a
tee fitting located in the cowl plenum area beneath
the cowl plenum cover/grille panel. Hoses from the
tee fitting are routed to the two nozzles, which are
snap-fit into openings in the cowl plenum cover/grille
panel. The hoses are clipped to the underside of the
cowl plenum cover/grille panel.
The two fluidic washer nozzles are not adjustable.
The nozzles cannot be repaired and, i f faulty, must be
replaced.
D I A G N O S I S A N D T E S T I N G
WIPER AND WASHER SYSTEMS
WARNING: ON VEHICLES EQUIPPED WITH AN AIR-
BAG, REFER TO GROUP 8M - PASSIVE RESTRAINT
SYSTEMS BEFORE ATTEMPTING STEERING
WHEEL OR STEERING COLUMN COMPONENT
DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI­
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY
Wiper and Washer Systems Diagnosis
CONDITION POSSIBLE CAUSE
CORRECTION
WIPER MOTOR WILL NOT RUN. 1 Fuse faulty.
2. Switch faulty.
3. Wiring faulty.
4. Ground faulty.
5. Motor faulty.
1. Check fuse in fuseblock module.
Replace fuse, if required.
2. See Multi-Function Switch tests, in
this group. Replace switch, if required.
3. Refer to Group 8W - Wiring
Diagrams. Check continuity between
switch and motor. Repair wiring, if
required.
4. Check for continuity between motor
ground strap and a known good
ground. Repair ground circuit, if
required.
5. See Wiper Motor tests, in this group.
Replace wiper motor, if required.
WIPER MOTOR RUNS, BLADES
DO NOT MOVE.
1. Loose motor crank arm.
2. Linkage disconnected.
3. Faulty pivots.
4 Faulty motor.
1. Tighten motor crank arm nut, if
required.
2. Re-install linkage or replace linkage
assembly, if required.
3.
Replace linkage assembly if
required.
4. See Wiper Motor tests, in this group.
Replace wiper motor, if required.