
(5) Stop lamp switch adjustment is detailed in
Group 5, Brakes.
ELECTRICAL TESTS AT POWERTRAIN CONTROL
MODULE
(1) Unplug the GRAY 40-way connector from the
Powertrain Control Module (PCM), (Fig. 7).
(2) Remove both steering wheel speed control
switches and disconnect the wire connectors.
(a) Using an ohmmeter, check for continuity
between cavity 41 of the PCM connector and cavity
1 of each speed control switch connector (Fig. 8).
(b) If no continuity, repair as necessary.
(c) Using an ohmmeter, check for continuity
between cavity 41 of the PCM connector and
ground.
(d) If continuity, repair as necessary.
(e) If no continuity, perform the Switch Test.
(f) Plug GRAY 40 way connector into PCM.
(g) Plug switch connectors back into switches.
(3) Unplug speed control servo electrical connector.
(4) Place ignition switch in the ON position and
turn on the speed control system, for the following
tests.(a) Using a voltmeter, measure voltage from cav-
ity 3 of servo connector to ground. Voltmeter
should read ignition voltage. If voltage is low, skip
to Step 7.
(b) Turn speed control and ignition switch OFF.
Using an ohmmeter, place positive lead on pin 3
and negative lead on pin 4 on the speed control
servo. Check continuity from pin 3 to pin 4.
(c) If no continuity, replace the speed control
servo. If continuity is greater than 49 ohms, clean
terminals.
(d) Using an ohmmeter, place positive lead on
pin 3 and negative lead on pin 2 on the speed con-
trol servo. Check continuity from pin 3 to pin 2.
(e) If no continuity, replace the speed control
servo. If continuity is greater than 49 ohms, clean
terminals.
(f) Using an ohmmeter, place positive lead on
pin 3 and negative lead on pin 1 on the speed con-
trol servo. Check continuity from pin 3 to pin 1.
(g) If no continuity, replace the speed control
servo. If continuity is greater than 49 ohms, clean
terminals.
(h) Using an ohmmeter at the servo connector,
place positive lead on cavity 4 and negative lead on
ground. Check continuity from cavity 4 to ground.
If no continuity, repair open circuit
(i) Unplug 2 40-way PCM connectors
(j) Using an ohmmeter, check continuity from
cavity 1 of servo connector to cavity 78 on PCM
connector. If no continuity, repair open circuit
(k) Using an ohmmeter, check continuity from
cavity 1 of servo connector to ground. If continuity,
repair as necessary.
(l) If continuity is OK, check continuity from
cavity 2 of servo connector to cavity 80 of PCM
connector. If no continuity, repair open circuit
(m) Using an ohmmeter, check continuity from
cavity 2 of servo connector to ground. If continuity,
repair as necessary.
(n) Using an ohmmeter, check continuity from
cavity 1 of servo connector to cavity 2 of servo con-
nector. If continuity, repair as necessary.
(o) Reconnect the 4 way connector to servo.
(5) Using an ohmmeter, check continuity from cav-
ity 62 of the PCM connector to ground. If continuity
is OK with brake pedal in unpressed position, pro-
ceed to Step 6.
(a) If no continuity, perform the Stop Lamp
switch test. Replace or adjust switch as required.
(b) If switch passes test, check continuity from
cavity 62 of the PCM connector to cavity 1 of the
stop lamp switch connector. Repair open circuit as
required.
Fig. 7 Powertrain Control Module Location
Fig. 8 PCM 40ÐWay Connectors
PLVEHICLE SPEED CONTROL SYSTEM 8H - 7
DIAGNOSIS AND TESTING (Continued)

(c) If continuity is OK between cavity 62 and
cavity 1, repair open circuit between cavity 2 of the
stop lamp switch connector and ground.
(6) Using an ohmmeter, check continuity from cav-
ity 76 on PCM connector to ground with the trans-
mission in park or neutral. If no continuity, test TRS/
Park-Neutral switch and switch wiring
(7) Turn speed control and ignition switch OFF.
(8) Unplug the BLACK 40-way connector from the
Powertrain Control Module (PCM)
(9) Using an ohmmeter, check continuity from cav-
ity 3 of servo connector to cavity 5 on the PCM con-
nector.
(a) If continuity is OK, replace PCM. Check cir-
cuit for short to ground before replacing PCM.
(b) If no continuity, remove stop lamp switch
and conduct Stop Lamp Switch Test. If test fails,
adjust or replace as necessary.
(c) If switch passes, measure continuity from
cavity 4 of stop lamp switch connector to cavity 3
of servo connector. Repair open circuit if necessary.
(d) If continuity is OK, measure continuity from
cavity 3 of stop lamp switch to cavity 5 of PCM
connector. Repair open circuit as necessary.
(e) Install PCM connectors onto PCM and speed
control servo connector to servo.
VACUUM SUPPLY TEST
(1) Disconnect vacuum hose at the servo and
install a vacuum gauge in the hose (Fig. 9).
(2) Start engine and observe gauge at idle. Vac-
uum gauge should read at least ten inches of mer-
cury. Shut off engine, the vacuum should continue to
hold 10 inches of mercury.
(3) If vacuum does not meet this requirement,
check and correct the following vacuum leaks in the
vacuum lines, check valve, vacuum reservoir or poor
engine performance.
VEHICLE SPEED SENSOR
For diagnosis and testing of the Vehicle Speed Sen-
sor (VSS), refer to the appropriate Powertrain Diag-
nostic Procedures service manual. Also refer to the
DRB scan tool.
REMOVAL AND INSTALLATION
SPEED CONTROL SERVO
REMOVAL
(1) Disconnect electrical connector from servo.
(2) Disconnect vacuum hoses from servo
(3) Remove 2 nuts retaining cable to servo.
(4) Remove hair pin holding cable to servo.
INSTALLATION
(1) Install hairpin to cable at servo.
(2) Install 2 nuts at cable to servo and servo
bracket, tighten to 7 N´m (60 ins. lbs.).
(3) Connect electrical connector to servo.
(4) Connect vacuum hose to servo
SPEED CONTROL SWITCH
The speed control switches are mounted in the
steering wheel and wired through the clock spring
device under the airbag module (Fig. 1).
WARNING: IF REMOVAL OF AIRBAG MODULE IS
NECESSARY, REFER TO GROUP 8M, RESTRAINT
SYSTEMS.
REMOVAL
(1) Turn off ignition.
(2) Remove two screws from side of each switch.
(3) Rock switch away from airbag and steering
wheel.
(4) Disconnect two-way electrical connector.
(5) Repeat for the other switch.
INSTALLATION
For installation reverse above procedures.
STOP LAMP SWITCH
REMOVAL
Remove the switch from the bracket by depressing
the brake pedal and rotating the switch in a counter-
clockwise direction approximately 30 degrees. Pull
the switch rearward and remove from bracket. Dis-
connect wiring harness connector.
INSTALLATION
Before installing the switch, reset the adjustable
switch plunger by pulling on the plunger head until
Fig. 9 Vacuum Gauge TestÐTypical
8H - 8 VEHICLE SPEED CONTROL SYSTEMPL
DIAGNOSIS AND TESTING (Continued)

WINDSHIELD WIPERS AND WASHERS
CONTENTS
page page
WINDSHIELD WASHER SYSTEM............. 8WINDSHIELD WIPERS..................... 1
WINDSHIELD WIPERS
INDEX
page page
GENERAL INFORMATION
INTRODUCTION......................... 1
DESCRIPTION AND OPERATION
WIPER BLADES.......................... 1
DIAGNOSIS AND TESTING
WINDSHIELD WIPER CONDITION............ 2
WIPER MOTOR.......................... 3
WIPER SWITCH.......................... 5
REMOVAL AND INSTALLATION
WIPER ARM............................. 5WIPER BLADE ELEMENT.................. 5
WIPER BLADE........................... 5
WIPER LINKAGE......................... 6
WIPER MODULE......................... 6
WIPER MOTOR.......................... 6
WIPER SWITCH.......................... 6
CLEANING AND INSPECTION
WIPER BLADES.......................... 6
ADJUSTMENTS
WIPER ARM ADJUSTMENT................. 7
GENERAL INFORMATION
INTRODUCTION
WARNING: VEHICLES ARE EQUIPPED WITH AN
AIRBAG, REFER TO GROUP 8M, RESTRAINT SYS-
TEMS FOR STEERING WHEEL OR COLUMN SER-
VICE PROCEDURES.
The windshield wipers will only operate with the
ignition switch in the ACCESSORY or IGNITION
RUN position. The wiper circuit is protect against
over loads by a fuse in the fuse block and a circuit
breaker within the wiper motor. This protects the cir-
cuitry of the wiper system and the vehicle.
The wiper motor has permanent magnet fields.
The intermittent wiper system, in addition to low
and high speed, has a delay mode and a pulse wipe
mode. The delay mode has a range of 1 to 15 seconds.
Pulse wipe is accomplished by momentarily moving
the stalk lever into the WASH position while the
wiper switch is in either OFF or DELAY position.
The wiper blades then sweep once or twice and
return to the previous wiper switch mode, OFF or
DELAY.The intermittent wiper function is integral to the
wiper switch. All electronics and relay are inside the
switch assembly.
The wiper system completes the wipe cycle when
the switch is turned OFF. The blades park in the
lowest portion of the wipe pattern.
DESCRIPTION AND OPERATION
WIPER BLADES
Wiper blades, exposed to the weather for a long
period of time, tend to lose their wiping effectiveness.
Periodic cleaning of the wiper blade is suggested to
remove the accumulation of salt and road film. The
wiper blades, arms, and windshield should be
cleaned with a sponge or cloth and a mild detergent
or nonabrasive cleaner. If the blades continue to
streak or smear, they should be replaced. The right
and left wipers are different blade lengths. The
driver side length is 525 mm and the passenger side
length is 450 mm. The blades should not be inter-
changed.
PLWINDSHIELD WIPERS AND WASHERS 8K - 1

DIAGNOSIS AND TESTING
WINDSHIELD WIPER CONDITION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, SEE GROUP 8M, RESTRAINT SYSTEMS FOR
STEERING WHEEL OR COLUMN REMOVAL PROCE-
DURES.
The following is a list of general wiper motor sys-
tem problems, the tests that are to be performed to
locate the faulty part, and the corrective action to be
taken.
Whatever the problem, disconnect motor wire har-
ness and clean the terminals, then connect motor
wire harness and test.
MOTOR WILL NOT OPERATE IN SOME OR ALL
SWITCH POSITIONS
(1) Check fuse 15, in the fuse block (Fig. 1).
(a) If fuse is OK, go to Step 2.
(b) If fuse is defective, replace and check motor
operation in all switch positions.
(c) If motor is still inoperative and the fuse does
not blow, go to Step 2.
(d) If replacement fuse blows, go to Step 6.
(2) Disconnect motor wire connector.
(3) Check motor low speed. Using two jumper
wires, connect one jumper wire between the battery
positive terminal and terminal 2 of the motor connec-
tor. Connect the other jumper wire to the battery
negative terminal and the motor ground strap. Refer
to Wiper Motor Connector Pinout table and (Fig. 2).
Check motor high speed, connect the positive jumper
wire to terminal 1 of the motor connector. Connect
the negative jumper wire to the motor ground strap.
(a) If motor does not run, high or low speed go to
Step 4.
(b) If motor runs, go to Step 5.(4) Using an ohmmeter, check for good ground at
the motor ground strap. If OK, replace motor. If not
repair the ground circuit as necessary.
(5) Check terminal E of wiper switch connector for
continuity to ground. If OK, go to Step 6. If not OK,
repair the ground circuit as necessary.
(6) Using a voltmeter, with wiper switch con-
nected, connect negative lead to motor ground strap.
Connect the positive lead to terminal P1 of the wiper
switch connector (Fig. 3) and (Fig. 5).
(a) If no voltage, repair wiring as necessary. If
OK, go to Step 2.
(b) Check wiper switch low speed, connect volt-
meter positive lead to terminal L of the wiper
switch connector. Move wiper stalk to LOW posi-
tion. If no voltage, replace switch.
(c) Check wiper switch high speed, connect volt-
meter positive lead to terminal H of the wiper
switch connector. Move wiper stalk to HIGH posi-
tion. If no voltage, replace switch.
(7) Disconnect motor connector and replace fuse 15
in fuse block.
(a) If fuse does not blow, replace motor.
Fig. 1 Fuse Block
WIPER MOTOR CONNECTOR PINOUT
CAVITY FUNCTION
1 WIPER SWITCH HIGH SPEED
OUTPUT
2 SIPER SWITCH LOW SPEED
OUTPUT
3 WIPER RELAY COMMON
4 FUSED IGNITION SWITCH OUTPUT
(RUN/ACC.)
Fig. 2 Windshield Wiper Motor Connector
8K - 2 WINDSHIELD WIPERS AND WASHERSPL

(b) If fuse blows, disconnect wiper switch and
replace fuse.
(c) If fuse does not blow, replace switch.
(d) If fuse blows, repair wiring as necessary.
MOTOR OPERATES SLOWLY AT ALL SPEEDS
(1) Remove wiper arms and cowl screen. Discon-
nect motor linkage from motor. Connect an ammeter
between battery positive terminal and terminal 4 of
the motor connector (Fig. 4). Turn wiper motor on
and check ampere reading.
If motor runs and ammeter reading is more than 6
amps, go to Step 2. If less than 6 amps, go to Step 3.
When replacing drive link nut tighten to 11 to 12
N´m (98 to 106 in. lbs.) torque.(2) Using an ohmmeter, check the high and low
circuits for a short to ground. Refer to Group 8W,
Wiring Diagrams.
(3) Check to see if wiper linkage or pivots are
binding or caught.
WIPERS RUN AT HIGH SPEED WITH SWITCH
IN LOW SPEED POSITION OR WIPERS RUN AT
LOW SPEED WITH SWITCH IN HIGH SPEED
POSITION.
(1) Check for crossed wires in the motor pigtail
wire connector. Refer to Group 8W, Wiring Diagrams.
(2) Check for crossed wires in harness connector
from wiper switch to motor.
(3) If OK, replace wiper switch.
WIPERS WILL OPERATE CONTINUOUSLY
WITH SWITCH IN THE INTERMITTENT
POSITIONÐWHEN WIPER SWITCH IS TURNED
OFF, WIPERS STOP WHEREVER THEY ARE,
WITHOUT RETURNING TO PARK POSITION.
(1) Check at motor ground strap for a good ground.
(2) Turn ignition switch OFF. Using an ohmmeter,
with the motor in the park position, check for conti-
nuity between terminal 3 and ground strap. If conti-
nuity, replace wiper switch. If no continuity, repair
wiring as necessary.
WIPERS DO NOT OPERATE WHEN WASHER
MOTOR IS ENGAGED (PULSE WIPE) OR
WIPERS DO OPERATE IN INTERMITTENT
POSITION.
Check for a good ground at motor ground strap and
at wiper switch terminal E. If OK, replace wiper
switch. If not OK, repair wiring as necessary.
WIPER MOTOR
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, SEE GROUP 8M, RESTRAINT SYSTEMS FOR
STEERING WHEEL OR COLUMN REMOVAL PROCE-
DURES.
Whenever a wiper motor malfunction occurs, verify
that the wire harness is properly connected start nor-
mal diagnosis and repair procedures. Refer to Wiper
System Diagnosis.
Fig. 3 Wiper Switch and Terminals
Fig. 4 Ammeter Test
PLWINDSHIELD WIPERS AND WASHERS 8K - 3
DIAGNOSIS AND TESTING (Continued)

WIPER SWITCH
To test the switch, first disconnect the switch wires
from the body wiring in the steering column. Using
an ohmmeter, test for continuity between the termi-
nals of the switch, as indicated in the following con-
tinuity chart (Fig. 5).
REMOVAL AND INSTALLATION
WIPER ARM
REMOVAL
(1) Place the wiper arm/blades in the PARK posi-
tion and turn ignition OFF.
(2) Remove arm cap and wiper arm nut.
(3) Remove the arm from the pivot using a rocking
motion.
(4) Clean metal splinters OFF the pivot shafts.
INSTALLATION
For installation reverse above procedures. Before
installation activate wiper system to ensure the
wiper module is in the PARK position. Position wiper
arms so that the heel of the blade(s) is on the park
line on the windshield.
WIPER BLADE
REMOVAL
(1) Lift wiper arm to over center position.
(2) Remove blade assembly from arm by pushing
release tab under arm tip and slide blade away from
arm tip (Fig. 6) and (Fig. 7).
(3) Gently place wiper arm tip on glass surface.
INSTALLATION
For installation reverse above procedures.
WIPER BLADE ELEMENT
REMOVAL
(1) Lift wiper arm to raise blade off glass.
(2) Remove blade assembly from arm by pushing
release tab under arm tip and slide blade away from
arm tip (Fig. 6) and (Fig. 7). Gently place wiper arm
tip on glass surface.
(3) Remove wiping element from blade assembly.
Pull stopper, of the rubber element, out of the end
claw together with vertibra (metal rails) (Fig. 8).
INSTALLATION
For installation reverse the above procedures.
Check that the element and vertibra are through all
claws and the final claw is locked in the stopper.
Fig. 5 Wiper Switch Test
Fig. 6 Wiper Blade and Element
Fig. 7 Remove Blade from Arm
Fig. 8 Wiper Blade and Element
PLWINDSHIELD WIPERS AND WASHERS 8K - 5
DIAGNOSIS AND TESTING (Continued)

WINDSHIELD WIPERS AND WASHERS
CONTENTS
page
WINDSHIELD WIPERS.................... 1
WINDSHIELD WIPERS
INDEX
page page
GENERAL INFORMATION
INTRODUCTION........................ 1
DIAGNOSIS AND TESTING
WINDSHIELD WIPER CONDITION........... 1WIPER MOTOR......................... 3
WIPER SWITCH......................... 5
GENERAL INFORMATION
INTRODUCTION
WARNING: VEHICLES ARE EQUIPPED WITH AN
AIRBAG, REFER TO GROUP 8M, RESTRAINT SYS-
TEMS FOR STEERING WHEEL OR COLUMN SER-
VICE PROCEDURES.
The windshield wipers will only operate with the
ignition switch in the ACCESSORY or IGNITION
RUN position. The wiper circuit is protect against
over loads by a fuse in the fuse block and a circuit
breaker within the wiper motor. This protects the cir-
cuitry of the wiper system and the vehicle.
The wiper motor has permanent magnet fields.
The intermittent wiper system, in addition to low
and high speed, has a delay mode and a pulse wipe
mode. The delay mode has a range of 1 to 15 seconds.
Pulse wipe is accomplished by momentarily moving
the stalk lever into the WASH position while the
wiper switch is in either OFF or DELAY position.
The wiper blades then sweep once or twice and
return to the previous wiper switch mode, OFF or
DELAY.
The intermittent wiper function is integral to the
wiper switch. All electronics and relay are inside the
switch assembly.
The wiper system completes the wipe cycle when
the switch is turned OFF. The blades park in the
lowest portion of the wipe pattern.
DIAGNOSIS AND TESTING
WINDSHIELD WIPER CONDITION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, SEE GROUP 8M, RESTRAINT SYSTEMS FOR
STEERING WHEEL OR COLUMN REMOVAL PROCE-
DURES.
The following is a list of general wiper motor sys-
tem problems, the tests that are to be performed to
locate the faulty part, and the corrective action to be
taken.
Whatever the problem, disconnect motor wire har-
ness and clean the terminals, then connect motor
wire harness and test.
MOTOR WILL NOT OPERATE IN SOME OR ALL
SWITCH POSITIONS
(1) Check fuse 15, in the fuse block (Fig. 1).
(a) If fuse is OK, go to Step 2.
(b) If fuse is defective, replace and check motor
operation in all switch positions.
(c) If motor is still inoperative and the fuse does
not blow, go to Step 2.
(d) If replacement fuse blows, go to Step 6.
PLWINDSHIELD WIPERS AND WASHERS 8K - 1

(2) Using an ohmmeter, check the high and low
circuits for a short to ground. Refer to Group 8W,
Wiring Diagrams.
(3) Check to see if wiper linkage or pivots are
binding or caught.
WIPERS RUN AT HIGH SPEED WITH SWITCH
IN LOW SPEED POSITION OR WIPERS RUN AT
LOW SPEED WITH SWITCH IN HIGH SPEED
POSITION.
(1) Check for crossed wires in the motor pigtail
wire connector. Refer to Group 8W, Wiring Diagrams.
(2) Check for crossed wires in harness connector
from wiper switch to motor.
(3) If OK, replace wiper switch.
WIPERS WILL OPERATE CONTINUOUSLY
WITH SWITCH IN THE INTERMITTENT
POSITIONÐWHEN WIPER SWITCH IS TURNED
OFF, WIPERS STOP WHEREVER THEY ARE,
WITHOUT RETURNING TO PARK POSITION.
(1) Check at motor ground strap for a good ground.
(2) Turn ignition switch OFF. Using an ohmmeter,
with the motor in the park position, check for conti-
nuity between terminal 3 and ground strap. If conti-
nuity, replace wiper switch. If no continuity, repair
wiring as necessary.
WIPERS DO NOT OPERATE WHEN WASHER
MOTOR IS ENGAGED (PULSE WIPE) OR
WIPERS DO OPERATE IN INTERMITTENT
POSITION.
Check for a good ground at motor ground strap and
at wiper switch terminal E. If OK, replace wiper
switch. If not OK, repair wiring as necessary.
WIPER MOTOR
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, SEE GROUP 8M, RESTRAINT SYSTEMS FOR
STEERING WHEEL OR COLUMN REMOVAL PROCE-
DURES.
Whenever a wiper motor malfunction occurs, verify
that the wire harness is properly connected start nor-
mal diagnosis and repair procedures. Refer to Wiper
Motor Test.
Fig. 4 Ammeter Test
PLWINDSHIELD WIPERS AND WASHERS 8K - 3
DIAGNOSIS AND TESTING (Continued)