Page 689 of 2585

brushes inside the motor. The current flow is con-
trolled by the multi-function switch. The high speed/
low speed relays are located in the IPM. The speed
sensitive intermittent wiper is controlled by the Body
Control Module (BCM). The intermittent mode, with
the vehicle traveling greater than 10.4 mph, has a
range of 0.5 to 18 seconds. With the vehicle traveling
less than 10.4 mph, the time delay doubles to a
range of 1 to 36 seconds. The wiper arms will park at
the base of the windshield just above the cowl cover
after the wiper switch is turned OFF.
The windshield wiper motor and linkage is located
in an integral wiper unit at the rear of the engine
compartment. The wiper unit must be removed to
gain access to the wiper motor.
REAR WIPER/WASHER SYSTEM
When rear wiper operation is required, the BCM
will provide ignition ON voltage to the rear wiper
motor (Export and ATC equipped vehicles only).
When the wiper switch is turned OFF, the BCM pro-
vides circuit ground to operate the motor until the
wipe cycle is complete and the wiper arm returns to
the base of the rear window.
Switch only offers an intermittent rear wiper
mode. The wiper motor will cycle every 7 seconds.
The intermittent delay time is also adjusted based
upon vehicle speed. With the vehicle traveling
greater than 50 mph, the cycle changes to every 5
seconds.
When rear washer is requested by depressing and
holding down the switch, the BCM then provides a
ground for the rear washer motor. Until the switch is
released, the motor will be in a continuous wipe
mode, then return to an intermittent wipe mode.
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - FRONT WIPER
SYSTEM
The windshield wiper system operates in several
modes:
²Low and high speed normal wipe
²Speed sensitive intermittent wipe
²Wipe after wash
²Park (switch OFF)
The windshield wiper circuits are continuously
monitored and controlled by the Body Control Mod-
ule (BCM). If a problem occurs in the electronic com-
ponents, wiring, switch (except integral motor park
switch) and wiper motor a Diagnostic Trouble Code
(DTC) will be stored in the BCM memory. DTC's can
be retrieved using a DRB IIItscan tool. Refer to the
proper Body Diagnostic Procedures manual for DTC
descriptions and retrieval information.The windshield wiper park switch and circuit is
monitored by the BCM. The park switch and circuit
can be tested using the Wiper System Diagnosis
table.
DIAGNOSIS AND TESTING - FRONT
WIPER/WASHER SWITCH
(1) Remove the multi-function switch (Refer to 8 -
ELECTRICAL/LAMPS/LIGHTING - EXTERIOR/
MULTI-FUNCTION SWITCH - REMOVAL).
(2) Using an ohmmeter check resistance readings
between switch pins. Refer to the WIPER/WASHER
SWITCH RESISTANCE table.
WIPER/WASHER SWITCH RESISTANCE
SWITCH POSITION RESISTANCE BETWEEN
OFF 1 AND 2 = 23.9KV 5%
DELAY POSITION
1ST 1 AND 2 = 7.9KV 5%
2ND 1 AND 2 = 4.6KV 5%
3RD 1 AND 2 = 2.9KV 5%
4TH 1 AND 2 = 1.9KV 5%
5TH 1 AND 2 = 1.3KV 5%
LOW 1 AND 2 = 670V 5%
HIGH 1 AND2=240V 5%
WASH 1 AND 4 = 5.9KV 5%
DIAGNOSIS AND TESTING - FAILED PARK
SWITCH
If the wiper park switch has failed, the windshield
wipers will operate as follows:
²SWITCH OFF- Wipers stop in current location
regardless of the park signal.
²INTERMITTENT MODE- Wipers operate con-
tinuously or at low speed for one or more extra
wipes.
²LOW SPEED- Wipers operate at low speed.
²HIGH SPEED- Wipers operate at high speed.
²WIPE AFTER WASH- Wipers operate at low
speed in any mode setting. Wipers operate only while
the wash button is depressed with switch in the OFF
mode and wipers stop in mid-cycle when button is
released.
The windshield wiper park switch and circuit is
monitored by the BCM. The park switch and circuit
can be tested using the WIPER SYSTEM DIAGNO-
SIS table.
8R - 2 WIPERS/WASHERSRS
WIPERS/WASHERS (Continued)
Page 690 of 2585

WIPER SYSTEM DIAGNOSIS
CONDITION POSSIBLE CAUSES CORRECTION
WIPER BLADES DO NOT
PARK PROPERLY1. WIPER ARMS IMPROPERLY
PARKED.1. REMOVE WIPER ARMS AND REPARK.
REFER TO WIPER ARM REMOVAL AND
INSTALLATION.
2. WIPER ARMS ARE LOOSE ON
PIVOT SHAFT.2. REMOVE WIPER ARM AND REPARK.
REFER TO WIPER ARM REMOVAL AND
INSTALLATION.
3. MOTOR CRANK LOOSE AT
OUTPUT SHAFT.3. REMOVE WIPER ARM, RUN WIPER
MOTOR TO PARK POSITION AND
REMOVE THE MODULE. WITHOUT
ROTATING THE MOTOR OUTPUT SHAFT,
REMOVE THE CRANK AND CLEAN ANY
FOREIGN MATTER FROM THE MOTOR
SHAFT. INSTALL THE MOTOR CRANK IN
ITS ORIGINAL POSITION.
4. STRIPPED WIPER ARM HEAD. 4. REPLACE WIPER ARM.
MOTOR STOPS IN ANY
POSITION WHEN THE
SWITCH IS TURNED OFFOPEN PARK CIRCUIT. CHECK PARK SWITCH BY
DISCONNECTING THE WIRE
CONNECTOR AND APPLY BATTERY
VOLTAGE TO PIN 4. PLACE A JUMPER
WIRE FROM PIN 2 TO PIN 3 AND THEN
TO AN EXTERNAL GROUND. REPLACE
MOTOR IF MOTOR DOES NOT PARK.
MOTOR WILL NOT STOP
WHEN THE SWITCH IS
TURNED OFF1. FAULTY SWITCH. 1. CHECK SWITCH IN LOW, HIGH AND
INTERMITTENT POSITION.
2. LACK OF DYNAMIC BRAKE ON
WET GLASS.2. ENSURE PARK SWITCH HAS CLEAN
GROUND.
WIPER BLADES SLAP
AGAINST COWL SCREEN
OR WINDOW MOLDINGS.WIPER ARMS ARE PARKED
INCORRECTLY.PARK WIPER ARMS. REFER TO WIPER
ARM ADJUSTMENT.
BLADES CHATTER 1. FOREIGN SUBSTANCE SUCH
AS POLISH ON GLASS OR
BLADES.1. CLEAN GLASS AND BLADE ELEMENT
WITH NON-ABRASIVE CLEANER.
2. ARMS TWISTED, BLADE AT
WRONG ANGLE ON GLASS.2. REPLACE ARM.
3. BLADE STRUCTURE BENT. 3. REPLACE BLADE.
4. BLADE ELEMENT HAS
PERMANENT SET.4. REPLACE BLADE.
WIPER KNOCK AT
REVERSAL1. LINKAGE BUSHINGS WORN. 1. REPLACE WORN LINK. REFER TO
WIPER LINKAGE REMOVAL AND
INSTALLATION.
2. ARMATURE ENDPLAY IN
MOTOR.2. REPLACE WIPER MOTOR. REFER TO
WIPER MOTOR REMOVAL AND
INSTALLATION.
RSWIPERS/WASHERS8R-3
WIPERS/WASHERS (Continued)
Page 691 of 2585

CONDITION POSSIBLE CAUSES CORRECTION
WIPER MOTOR WILL NOT
RUN1. BLOWN FUSE. 1. REPLACE FUSE, AND RUN SYSTEM.
2. NEW FUSE BLOWS. 2. CHECK FOR SHORT IN WIRING OR
SWITCH.
3. NEW FUSE BLOWS. 3. REPLACE FUSE, REMOVE MOTOR
CONNECTOR, TURN SWITCH ON, FUSE
DOES NOT BLOW, REPLACE MOTOR.
4. NO VOLTAGE AT MOTOR. 4. CHECK SWITCH AND WIRING
HARNESS. REFER TO WIRING
DIAGRAMS.
5. POOR GROUND. 5. REPAIR GROUND WIRE CONNECTION
AS NECESSARY.
DIAGNOSIS AND TESTING - REAR WIPER
SYSTEM
The rear window wiper system operates in several
modes:
²Continuous wipe (Export and ATC equipped
vehicles only)
²Intermittent wipe
²Wash²Wipe after wash
The windshield wiper circuits are continuously
monitored and controlled by the Body Control Mod-
ule (BCM). If a problem occurs in the electronic com-
ponents, wiring, switch (except integral motor park
switch) and wiper motor a Diagnostic Trouble Code
(DTC) will be stored in the BCM memory. The
DTC(s) can be retrieved using a DRB IIItscan tool.
DIAGNOSIS AND TESTING - WASHER SYSTEM
WASHER SYSTEM DIAGNOSIS
CONDITION POSSIBLE CAUSES CORRECTION
WASHER MOTOR 1. IPM FUSE #33 BLOWN OR
DEFECTIVE.1. CHECK FUSE #33 IN THE IPM. REPLACE
IF NOT OK.
2. IPM FUSE #33 LOOSE. 2. PROPERLY INSTALL IPM FUSE #33 IN
SOCKET.
BLOWN FUSE WHEN
IGNITION SWITCH IS IN THE
RUN OR ACCESSORY
POSITION.1. SHORT IN IPM BETWEEN
FUSE #33 AND PIN 11 OR PIN 1.1. REFER TO IPM DIAGNOSTIC
PROCEDURES IN WIRING DIAGRAMS.
2. SHORT IN MOTOR POWER
CIRCUIT.2. SHORT OR DEFECTIVE CIRCUIT
BETWEEN IPM PIN 11 AND WASHER MOTOR
CONNECTOR POSITIVE TERMINAL 2. IF NOT
OK, REPAIR CIRCUIT.
3. SHORT IN WASHER PUMP
MOTOR.3. REPLACE WASHER PUMP MOTOR.
WASHER MOTOR RUNS
WHEN IGNITION SWITCH IN
RUN OR ACCESSORY
POSITION.1. SHORT IN IPM BETWEEN
WASHER PUMP MOTOR LSD
AND PIN 20.1. REFER TO IPM DIAGNOSTIC
PROCEDURES IN WIRING DIAGRAMS.
2. DEFECTIVE FRONT WASHER
LSD IN IPM.2. REFER TO IPM DIAGNOSTIC
PROCEDURES IN WIRING DIAGRAMS.
3. SHORT IN MOTOR GROUND
CIRCUIT.3. SHORT OR DEFECTIVE CIRCUIT
BETWEEN IPM PIN 20 AND MOTOR
CONNECTOR NEGATIVE TERMINAL 1. IF
NOT OK, REPAIR CIRCUIT.
8R - 4 WIPERS/WASHERSRS
WIPERS/WASHERS (Continued)
Page 692 of 2585

CONDITION POSSIBLE CAUSES CORRECTION
WASHER SYSTEM WILL NOT
FLOW WASHER FLUID.1. NO WASHER FLUID IN
RESERVOIR.1. FILL WASHER RESERVOIR.
2. IPM FUSE #33 BLOWN. 2. SHORT OR DEFECTIVE CIRCUIT
BETWEEN IPM PIN 11 AND WASHER PUMP
MOTOR CONNECTOR POSITIVE TERMINAL
2. INTERNAL SHORT IN IPM. IF NOT OK,
REPAIR CIRCUIT OR REFER TO IPM
DIAGNOSTIC PROCEDURES IN WIRING
DIAGRAMS.
3. WASHER HOSE NOT
FLOWING WASHER FLUID.3. ASSURE WASHER HOSE IS NOT
PINCHED, LOOSE, BROKEN OR
DISCONNECTED. IF NOT OK, PROPERLY
ROUTE OR REPAIR WASHER HOSE.
4. MOTOR CONNECTOR LOOSE. 4. PROPERLY SEAT AND LOCK CONNECTOR
TO MOTOR.
5. MOTOR CONNECTOR
TERMINALS BENT.5. REPAIR TERMINALS AND PROPERLY
SEAT CONNECTOR TO MOTOR.
6. OPEN CIRCUIT TO OR FROM
WASHER SELECT SWITCH
(EXPORT AND ATC EQUIPPED
VEHICLES ONLY).6. OPEN OR DEFECTIVE CIRCUIT BETWEEN
IPM BODY CONTROLLER PIN 27 AND
WASHER SELECT SWITCH PIN 4, OR OPEN
OR DEFECTIVE CIRCUIT BETWEEN IPM
BODY CONTROLLER PIN 22 AND WASHER
SELECT SWITCH PIN 2. IF NOT OK, REPAIR
CIRCUIT.
7. OPEN OR DEFECTIVE
WASHER SELECT SWITCH.7. REFERO TO THE PROPER BODY
DIAGNOSTIC PROCEDURES INFORMATION
ON MANUAL TEMPERATURE CONTROLS.
8. OPEN POWER CIRCUIT TO
MOTOR.8. OPEN OR DEFECTIVE CIRCUIT BETWEEN
IPM CONNECTOR TERMINAL 11 AND
WASHER MOTOR CONNECTOR POSITIVE
TERMINAL 2. INTERNAL OPEN IN IPM. IF
NOT OK, REPAIR CIRCUIT OR REFER TO
IPM DIAGNOSTIC PROCEDURES IN WIRING
DIAGRAMS.
9. OPEN OR DEFECTIVE MOTOR
GROUND CIRCUIT.9. OPEN OR DEFECTIVE CIRCUIT BETWEEN
IPM CONNECTOR TERMINAL 20 AND
WASHER MOTOR CONNECTOR NEGATIVE
TERMINAL 1. INTERNAL OPEN IN IPM. IF
NOT OK, REPAIR CIRCUIT OR REFER TO
IPM DIAGNOSTIC PROCEDURES IN WIRING
DIAGRAMS.
10. OPEN CIRCUIT IN MOTOR. 10. CHECK FOR OPEN CIRCUIT IN MOTOR
BETWEEN POSITIVE TERMINAL 2 AND
NEGATIVE TERMINAL 1. IF NOT OK,
REPLACE WASHER MOTOR.
11. SEIZED MOTOR BEARINGS. 11. APPLY DIRECT BATTERY VOLTAGE TO
MOTOR TERMINALS. IF MOTOR DOES NOT
RUN, REPLACE MOTOR.
12. NO BUS MESSAGE FROM
MTC CONTROL (MANUAL TEMP.
CONTROL ONLY).12. CHECK FOR CORRECT PCI BUS
MESSAGE WITH DRBIIIT.
RSWIPERS/WASHERS8R-5
WIPERS/WASHERS (Continued)
Page 693 of 2585

CONDITION POSSIBLE CAUSES CORRECTION
COWL GRILLE NOZZLE WILL
NOT FLOW.1. FROZEN NOZZLE. 1. MOVE VEHICLE INTO HEATED AREA TO
ALLOW TIME TO THAW NOZZLE. ASSURE
WASHER FLUID IS PROPERLY BLENDED
FOR AMBIENT OUTSIDE TEMPERATURES.
2. NOZZLE HOSE NOT
FLOWING.2. ASSURE NOZZLE HOSE IS NOT PINCHED,
LOOSE, BROKEN, OR DISCONNECTED. IF
NOT OK, PROPERLY ROUTE OR REPAIR
NOZZLE HOSE.
3. NOZZLE HOSE PLUGGED BY
CONTAMINATION.3. CLEAN NOZZLE HOSE OF
CONTAMINATION. DETERMINE SOURCE OF
CONTAMINATION. INSPECT RESERVOIR
FOR EXCESSIVE CONTAMINATION. CLEAN
SYSTEM AS REQUIRED.
4. NOZZLE PLUGGED BY
CONTAMINATION.4. CLEAN NOZZLE OF CONTAMINATION OR
REPLACE NOZZLE. DETERMINE SOURCE
OF CONTAMINATION. INSPECT RESERVOIR
FOR EXCESSIVE CONTAMINATION. CLEAN
SYSTEM AS REQUIRED.
5. DEFECTIVE WASHER HOSE
CHECK VALVE.5. REPLACE COWL GRILLE PANEL WASHER
HOSE/CHECK VALVE ASSEMBLY.
WASHER FLUID OUTPUT IS
LOW.1. PARTIALLY PINCHED HOSE. 1. ASSURE WASHER HOSE IS NOT
PARTIALLY PINCHED. IF NOT OK,
PROPERLY ROUTE HOSE.
2. REVERSE POLARITY TO
PUMP.2. CHECK FOR CROSSED CIRCUIT TO
PUMP. IF NOT OK, REPAIR CIRCUIT.
3. WORN OUT WASHER PUMP. 3. REPLACE WASHER PUMP.
COWL GRILLE NOZZLE
STREAM OVERSHOOTS
WINDSHIELD.1. NOZZLE NOT SEATED IN
COWL GRILLE.1. ASSURE NOZZLE IS SNAPPED IN PLACE.
WIPER WILL NOT CYCLE
WHEN WASHER SELECT
SWITCH IS DEPRESSED.1. DEFECTIVE IPM. 1. REFER TO IPM DIAGNOSTIC
PROCEDURES IN WIRING DIAGRAMS.
2. DEFECTIVE IPM/BODY
CONTROLLER.2. REFER TO IPM/BODY CONTROLLER
DIAGNOSTIC PROCEDURES IN WIRING
DIAGRAMS.
3. REAR WIPER OUTPUT SHORT
FAULT.3. A GROUND SHORT DETECTED BETWEEN
BCM AND REAR WIPER MOTOR. CLEAR
FAULT. IF IT WON'T CLEAR, REPAIR SHORT
4. REAR WIPER OUTPUT OPEN
FAULT.4. AN OPEN CIRCUIT DETECTED BETWEEN
BCM AND REAR WIPER MOTOR. CLEAR
FAULT. IF IT WON'T CLEAR, REPAIR OPEN
CIRCUIT.
5. NO BUS MESSAGE FROM
MTC CONTROL (MANUAL TEMP.
CONTROL ONLY).5. REFER TO PROPER BODY DIAGNOSTIC
INFORMATION OR USE DRBIIITTO CHECK
PROPER MESSAGE STATUS.
8R - 6 WIPERS/WASHERSRS
WIPERS/WASHERS (Continued)
Page 694 of 2585

CONDITION POSSIBLE CAUSES CORRECTION
WASHER OPERATES
INTERMITTENTLY.1. INTERMITTENT MOTOR
GROUND.INTERMITTENT GROUND BETWEEN MOTOR
CONNECTOR TERMINAL 1 AND IPM PIN 20.
2. INTERMITTENT OPEN IN
WASHER SELECT SWITCH.2. (Refer to 8 - ELECTRICAL/LAMPS/
LIGHTING - EXTERIOR/MULTI-FUNCTION
SWITCH - DIAGNOSIS AND TESTING).
3. DEFECTIVE WASHER MOTOR. 3. REPLACE WASHER MOTOR.
LOW WASHER FLUID LEVEL
INDICATOR INOPERATIVE.1. LOOSE FLUID LEVEL SENSOR
CONNECTOR.1. PROPERLY SEAT CONNECTOR TO LOW
FLUID LEVEL SENSOR AND LOCK.
2. OPEN POWER CIRCUIT TO
FLUID LEVEL SENSOR.2. OPEN OR DEFECTIVE CIRCUIT BETWEEN
IPM CONNECTOR TERMINAL 7 AND THE
LOW FLUID LEVEL SENSOR CONNECTOR
TERMINAL 2. IF NOT OK, REPAIR CIRCUIT.
3. OPEN GROUND CIRCUIT. 3. OPEN OR DEFECTIVE CIRCUIT BETWEEN
FLUID LEVEL SENSOR CONNECTOR
TERMINAL 1 AND FLOOR GROUND 1.
4. DEFECTIVE IPM. 4. REFER TO IPM DIAGNOSTIC
PROCEDURES IN WIRING DIAGRAMS.
5. FLUID LEVEL SENSOR
SWITCH OPEN OR DEFECTIVE.5. APPLY OHMMETER TO THE SWITCH
TERMINALS TO CHECK FOR COMPLETE
CIRCUIT. CYCLE SWITCH FLOAT BACK AND
FORTH BY FILLING AND DEPLETING
RESERVOIR OF WASHER FLUID TO CHECK
FOR PROPER SWITCH FUNCTION. IF NOT
OK, REPLACE LOW FLUID LEVEL SENSOR
SWITCH.
LEAKING WASHER FLUID. 1. PUMP OR SENSOR
GROMMET DEFECTIVE.1. PROPERLY SEAT PUMP OR SENSOR IN
GROMMET. IF NOT OK, REPLACE PUMP OR
SENSOR GROMMET.
2. LEAKING WASHER PUMP. 2. REPLACE WASHER PUMP.
3. LEAKING FLUID LEVEL
SENSOR.3. REPLACE FLUID LEVEL SENSOR.
4. LEAKING OR DEFECTIVE
RESERVOIR BODY.4. REPLACE RESERVOIR BODY.
RSWIPERS/WASHERS8R-7
WIPERS/WASHERS (Continued)
Page 695 of 2585

FRONT WASHER PUMP
MOTOR
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the engine fresh air housing inside the
engine compartment (Refer to 9 - ENGINE/AIR
INTAKE SYSTEM/AIR CLEANER HOUSING -
REMOVAL).
(3) Disconnect the washer hose at the in-line con-
nector forward of the cowl grille so that the in-line
connector remains with the washer hose from the
fresh air plenum.
(4) Disconnect the washer hose from the hose clip
located on the front fender side shield.
(5) Remove the filler tube screw.
(6) Hoist and support vehicle on hoist or jack
stands.
(7) Remove the right front wheel and tire assembly
(Refer to 22 - TIRES/WHEELS - REMOVAL).
(8) Disconnect the left right front wheelhouse
splash shield and move aside (Refer to 23 - BODY/
EXTERIOR/WHEELHOUSE SPLASH SHIELD -
REMOVAL).
(9) Drain washer fluid from the reservoir and into
a suitable clean container. This can be done by dis-
connecting the windshield washer hose from the
front (outboard) washer pump and allowing the
washer fluid to drain into a container through a tem-
porary jumper hose connected to the front washer
pump.
(10) Disconnect the electrical body harness connec-
tors to the washer pump motors and the fluid level
sensor. Slide the red lock on the connector to the
release position, then, depress the black tab and pull
the connector off the pump or sensor.
(11) Remove the two reservoir mounting screws.
(12) Disconnect the reservoir from the body mount
by raising the reservoir upward slightly and then
down so that the reservoir filler neck and front
washer hose pull through the opening in the front
fender side shield.
(13) Remove pump from reservoir by pulling pump
upper retention tab away from reservoir cavity and
then lifting pump up from mounting grommet. Do
not damage reservoir/pump sealing surface or punc-
ture reservoir during removal.
(14) Remove pump grommet and discard.
INSTALLATION
(1) Use new grommet when installing a new pump
assembly.
(2) Assure pump upper retention tab is pressed
into reservoir slot and that pump is rotated flatagainst the reservoir and that pump connector is fac-
ing up in the fully seated position. Assure the pump
is aligned to and fully seated in the reservoir cavity.
(3) Push filler neck and front washer hose through
the opening in the front fender side shield. Connect
the reservoir to the body mount by lowering the res-
ervoir down.
(4) Install the two reservoir mounting screws.
Torque screws to 8.5 - 11.3 N´m (75 - 100 in. lbs.).
(5) Connect the electrical body harness connectors
to the washer pump motors and the fluid level sen-
sor. Slide the red lock on the connector to the closed
or locked position.
(6) Assure that washer hose is properly routed to
prevent pinching and possible inoperative washers.
(7) Connect the left right front wheelhouse splash
shield and move aside (Refer to 23 - BODY/EXTERI-
OR/WHEELHOUSE SPLASH SHIELD - INSTALLA-
TION).
(8) Install the right front wheel and tire assembly
(Refer to 22 - TIRES/WHEELS - INSTALLATION).
(9) lower vehicle from hoist or jack stands.
(10) Install the filler tube screw. Torque screw to
8.5 - 11.3 N´m (75 - 100 in. lbs.).
(11) Connect the washer hose to the hose clip
located on the front fender side shield.
(12) Connect the washer hose at the in-line con-
nector forward of the cowl grille.
(13) Install the engine fresh air housing inside the
engine compartment (Refer to 9 - ENGINE/AIR
INTAKE SYSTEM/AIR CLEANER HOUSING -
INSTALLATION).
(14) Connect the battery negative cable.
(15) Verify system operation.
FRONT WIPER ARMS
STANDARD PROCEDURE - FRONT WIPER ARM
ALIGNMENT
(1) Verify wiper blade element condition and wiper
arm spring tension. Run wipers in low speed mode
while applying water to the windshield. Observe the
wiper blade that is chattering or skipping across the
windshield. If the wiper element is not rolling over
when the wiper direction reverses, align the wiper
arm. The extension bar portion of the wiper arm
must be twisted in the proper direction to allow the
wiper element to roll over when the direction
reverses.
(2) Place two small adjustable wrenches placed 50
mm (2 in.) apart on the wiper arm extension rod.
(3) Twist the extension rod slightly in the opposite
direction that the element is laying on the wind-
shield while holding the wrench closest to the pivot
stationary.
8R - 8 WIPERS/WASHERSRS
Page 696 of 2585

(4) Repeat Step 1, and align as necessary until
wiper stops chattering and wipes the windshield
clear.
REMOVAL
CAUTION: The driver side wiper arm must be
parked above the passenger side. Failure to do so
will result in damage to the arms, blades or system.
(1) Lift the arm cap upward.
(2) Remove the nut holding wiper arm to the wiper
pivot.
(3) Using a suitable two jaw puller, separate the
wiper arm from the wiper pivot (Fig. 1).
INSTALLATION
(1) Verify that the wiper motor and linkage are in
the park position.
(2) Place the wiper arm in position over the wiper
pivot (Fig. 2).
(3) Install the nut to hold the wiper arm to the
wiper pivot. Torque nut to 35 N´m (26 ft. lbs.).
CAUTION: It is important to torque the wiper arm
nut properly to insure that the wiper arm head does
not strip and damage the arm, blade, and pivot of
both wiper arms.
(4) Push the arm cap cover down.
FRONT WIPER MOTOR
REMOVAL
(1) Remove the front wiper motor from vehicle
(Refer to 8 - ELECTRICAL/WIPERS/WASHERS/
WIPER MODULE - REMOVAL).
(2) Remove four backwall bolts and four brace
nuts.
(3) Remove wiper linkage from wiper module.
(4) Disconnect wire connectors from back of wiper
motor.
(5) Remove wiper linkage from motor crank. DO
NOT remove crank from motor.
(6) Remove bolts holding wiper motor and remove
motor.
INSTALLATION
(1) Place wiper module on a suitable work surface.
(2) Install wiper linkage into wiper unit.
(3) Connect wire connectors to wiper motor.
(4) Place the wiper module into engine compart-
ment and connect wiper module wire connector to
engine wire harness (Fig. 8).
(5) Install the four backwall bolts and four brace
nuts to wiper module.
(6) Operate wiper motor and verify that the wiper
motor parks when wiper switch is turned OFF.
Fig. 1 WIPER ARM REMOVAL
1 - WASHER NOZZLE
2 - HOOD
3 - COWL COVER
4 - WINDSHIELD
5 - TWO JAW PULLER
6 - ARM CAP
7 - WINDSHIELD WIPER ARM
Fig. 2 WIPER ARM ADJUSTMENT
1 - WIPER BLADES
2 - WINDSHIELD
3 - WASHER NOZZLES
4 - WIPER ARMS
RSWIPERS/WASHERS8R-9
FRONT WIPER ARMS (Continued)