Dodge RAM TRUCK 1500 1995 Service Manual page 475

8K - 2 WIPER AND WASHER SYSTEMS — —
mm
DIAGNOSIS
WIPER WIOTOB
The following are wiper motor system problems,
tests to be performed to locate the faulty part, and
the proper action to be taken. If the malfunction in­
volves only the delay mode, switch, or wiring, see the
diagnosis for Intermittent Wipe Module and Multi-
Function Switch.
Motor will not run in any wiper/washer
switch position.
PROCEDURE
(1) Check fuse 8 in the fuseblock module. If OK, go
to step 3. If not OK, replace fuse and go to next step.
(2) Check motor operation in all wiper/washer
switch positions. If not OK and fuse blows, go to step
5. If not OK and fuse is OK, go to next step.
(3) Place wiper/washer switch in LOW position and
listen to motor. If you cannot hear it running, go to
next step. If motor is running, check motor output
shaft. If output shaft is not turning, replace motor
assembly. If it is turning, drive link to output shaft
or linkage is not properly connected. Replace worn
parts and/or properly connect drive link to the motor
output shaft.
also controls many other functions. The multi-func­
tion switch can not be repaired. If any function of the
switch is faulty, the entire switch must be replaced.
INTERMITTENT
W I P E
MODULE
In addition to low and high speed, the intermittent
wipe system has a delay mode. The delay mode has a
range of 2 to 15 seconds. The length of the delay is
selected with a variable resistor in the wiper switch
and is accomplished by electronic circuitry within the
intermittent wipe module. If the washer knob is de­
pressed while the wiper switch is in the OFF posi­
tion, the intermittent wipe module will operate the
wiper motor for approximately 2 wipes and automat­
ically turn the motor off. The intermittent wipe mod­
ule is mounted to the lower instrument panel support
bracket, behind the knee blocker. The module can not
be repaired.
WASHER
NOZZLES
The two fluidic washer nozzles are snap-fit into
openings in the cowl grille panel below the wind­
shield and are not adjustable. Washer fluid is fed to
the nozzles through hoses clipped to the underside of
the cowl grille panel. The nozzles can not be repaired
and, if faulty, should be replaced.
WASHER RESERVOIR
The washer solvent reservoir is mounted to the left
side of the radiator fan shroud in the engine com­
partment. It has a provision for a low washer fluid
level sensor. Refer to Group 8E - Instrument Panel
and Gauges for diagnosis and service of the sensor.
The reservoir and filler cap are available for service.
WASHER PUMP
The washer pump and motor are press-fit into a
rubber grommet near the bottom of the washer res­
ervoir. 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 plumb­
ing to the nozzles when the motor is energized. The
pump and motor can not be repaired. If faulty, the
entire assembly must be replaced.