CHEVROLET PLYMOUTH ACCLAIM 1993 Service Manual

tor is still in park position before assembling to link-
age, if not temporarily connect motor to wiring and
operate switch to position motor in park before as-
sembling linkage. (2) Install wiper motor, bracket crank and linkage
assembly into cowl plenum. (3) Loosely install pivots and hose connector with
retaining nuts to mounting studs. (4) Secure motor mounting bracket screws to body
and tighten to 7 to 8 N Im (60 to 70 in. lbs.) torque.
(5) Attach wiper motor wiring harness.
(6) Tighten pivot attaching screws to 7 to 8 N Im
(60 to 70 in. lbs.) torque. (7) Cycle wiper motor and turn OFF. To ensure
wiper motor is in the park position. (8) Install cowl top plastic cover.
(9) Install and adjust wiper arm assembly. Tighten
to 17 to 19 N Im (150 to 170 in. lbs.) torque.
Fig. 21 Windshield Wiper Motor and LinkageÐAP BODY
Ä WINDSHIELD WIPER AND WASHER SYSTEMS 8K - 11

INTERMITTENT WINDSHIELD WIPER MOTOR AND SWITCH SERVICE PROCEDURES
INDEX
page page
Intermittent Windshield Wiper Switch Tests ..... 12
Intermittent Wipe Switch Test ............... 14
Intermittent Wiper Function Tests ............ 14
Intermittent Wiper Motor System Test ......... 12 Pulse Intermittent Windshield Wiper Controller
(PIWWC) .............................. 15
Standard Wiper Switch Test ................ 14
Wiper Switch Service Procedure ............. 15
INTERMITTENT WIPER MOTOR SYSTEM TEST
Intermittent Wiper Motor Service Procedures for
diagnosis of problems which do not involve the delay
function, refer to the Two-Speed Motor Function
Tests. The two-speed functions of all wiper motors
are identical. If a problem occurs, only in the DELAY mode, the
following tests are to be performed.
INTERMITTENT WINDSHIELD WIPER SWITCH
TESTS
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAG, SEE GROUP 8M, RESTRAINT SYSTEMS FOR
STEERING WHEEL OR COLUMN REMOVAL PROCE-
DURES.
The intermittent wipe function on AC, AG, AJ and
AY vehicles is controlled by the body controller, lo-
cated in the passenger compartment behind the right
side kick panel (Fig. 22). If the body controller is de-
termined to be the problem, refer to Group 8E, In-
strument Panels and Gauges, for replacement
procedures.
CONDITION: WIPERS DO NOT COME ON WHEN THE SWITCH IS IN DELAY POSITION
PROCEDURE
(1) Disconnect 25-way connector (blue) from the
body controller. (2) Place wiper control switch in maximum DE-
LAY position. (3) Connect positive lead of voltmeter to pin 9 of
connector (blue) and negative lead to the good
ground. (a) If voltmeter reads 0, check control switch and
wiring for an open circuit. (b) If voltmeter reads 10 to 15 volts, proceed to
step 4.
(4) Connect positive lead of voltmeter to pin 22 of
blue connector and negative lead to a good ground. (a) If voltmeter reads 0, check fuses and wiring
for an open circuit. (b) If voltmeter reads 10 to 15 volts, reconnect
body controller and proceed to step 5.
(5) Connect positive lead of voltmeter to pin 24 of
blue connector and negative lead to the metal case of
the body controller. Disconnect wiring harness from
wiper motor. Set control switch to the minimum de-
lay mode. (a) If voltmeter reads 0, check wiring from the
intermittent wipe switch to body controller for an
open circuit. (b) If voltmeter reads 10 to 15 volts, proceed to
step 6.
(6) Connect voltmeter to pin L of the Intermittent
wiper switch. Place intermittent wiper switch in the
Max. Delay position. (a) If voltmeter reads zero volts, change the in-
termittent wiper switch. (b) If voltmeter reads 10-15 volts, check the wir-
ing harness from the intermittent wiper switch to
the wiper motor for an open circuit.
(7) If all tests above have been performed and the
problem was not found, replace the body controller.
Fig. 22 Body Controller Location
8K - 12 WINDSHIELD WIPER AND WASHER SYSTEMS Ä

CONDITION: WIPERS START TO WIPE, BUT STOP BEFORE ONE COMPLETE CYCLE ANDDO NOT RETURN TO PARK POSITION
PROCEDURE
(1) Verify that motor will park when the column
switch is put in the OFF position. (2) Set wiper control switch to maximum DELAY
and allow motor to run until it stops during the wipe
cycle. When motor stops, disconnect 25-way blue con-
nector from the body controller. (3) Connect positive lead of voltmeter to pin 20 of
blue connector and negative lead to the metal case of
the body controller. (a) If voltmeter reads 0, check wiring for an open
circuit. (b) If voltmeter reads 10 to 15 volts, proceed to
step 4.
(4) Using an ohmmeter or continuity tester; (a) Check for continuity between pins 20 and 24
of blue connector of the body controller. (b) Reverse ohmmeter leads on pins 20 and 24,
again checking for continuity. (c) If continuity between pins 20 and 24 is not
observed in both steps a and b, replace the body
controller.
CONDITION: EXCESSIVE DELAY OF MORE THAN 30 SECONDS OR INADEQUATEVARIATION IN DELAY
PROCEDURE
(1) Variations in delay should be as follows: (a) Minimum delay control to extreme counter-
clockwise position before first detent of 1/2 to 2 sec-
onds. (b) Maximum delay control to extreme clockwise
position before OFF detent of 15 to 25 seconds.
(2) If there is excessive delay or no variations in
delay, remove the wiper motor wiring harness while
the motor is parked in the OFF position. (3) Remove 25-way blue connector from the body
controller. (4) Set wiper control switch to maximum DELAY
position. (5) With ignition switch in ON position, measure
voltage between pin 9 of black connector and a good
ground. (a) If voltmeter reads 0, proceed to step 6.
(b) If voltmeter reads 10 to 15 volts, proceed to
step 7.
(6) Set wiper control switch to minimum DELAY
position and measure voltage between pin 9 of blue
connector and a good ground. If voltmeter reads 0,
check for an open circuit in the intermittent wipe
wiring harness. (7) Remove wiper motor circuit fuse. (8) Using an ohmmeter, measure the resistance be-
tween pins 9 and 22 of the body controller 25-way
black connector. Set the wiper control switch first to
minimum DELAY and then maximum DELAY. (a) If resistance reading at minimum DELAY
setting is between 0 and 15 ohms, and at maxi-
mum DELAY setting the resistance is between
240,000 and 400,000 ohms, replace the body con-
troller. (b) If the resistance values above are not ob-
tained, replace the wiper control switch.
CONDITION: WIPERS DO NOT RUN CONTINUALLY WHEN WASH CONTROL ISOPERATED DURING DELAY MODE
PROCEDURE
(1) Disconnect 25-way blue connector from the
body controller (2) Using a voltmeter, connect the positive lead to
pin 10 of the (Black) connector. Connect negative
lead to the body computer metal case. (3) Set wiper control switch to DELAY position.
(4) Depress wash switch.
(5) If voltage reads 0, check switch relay and wir-
ing. (6) If voltage is between 10 and 15 volts, the prob-
lem is in the body controller.
CONDITION: IN DELAY MODE, WIPERS RUN CONTINUALLY WHEN WASH IS OPERATEDBUT DO NOT PROVIDE FOUR EXTRA WIPESWHEN WASH CONTROL IS RELEASED
PROCEDURE
Replace body controller.
CONDITION: WIPERS START ERRATICALLY DURING DELAY MODE
PROCEDURE
(1) Verify that the ground connection at the in-
strument panel is making a good connection, free
from paint and is tight. (2) Verify that the motor ground strap is making
good contact and that the motor mounting bolts are
tight. (3) Verify that the wiring connections to the body
controller, wiper motor, and wiper motor switch are
tight and free of corrosion. (4) If condition is not corrected, problem is with
the body controller
Ä WINDSHIELD WIPER AND WASHER SYSTEMS 8K - 13

INTERMITTENT WIPER FUNCTION TESTS
CONDITION: EXCESSIVE DELAY OF MORE THAN 30 SECONDS OR INADEQUATEVARIATION IN DELAY
PROCEDURE
Variations in delay should be as follows:
(1) Minimum delay control to extreme counter-
clockwise position before first detent of one half to
two seconds. (2) Maximum delay control to extreme clockwise
position before off detent of ten to thirty seconds. (3) If there is excessive delay or no variations in
delay proceed to intermittent wipe switch test.
CONDITION: IN DELAY MODE WIPERS RUN CONTINUALLY WHEN WASH IS OPERATEDBUT DO NOT PROVIDE AN EXTRA WIPEWHEN THE WASH CONTROL IS RELEASED
PROCEDURE
Replace the control unit.
CONDITION: WIPERS START ERRATICALLY DURING DELAY MODE
PROCEDURE
(1) Verify that the ground connection at the in-
strument panel is making good connection, free from
paint and is tight. (2) Verify that the motor ground strap is making
good contact and that the motor mounting bolts are
tight. (3) Verify that the wiring ground connections for
the intermittent wipe control unit and the wiper
switch are tight. (4) If condition is not corrected, replace control
unit.
STANDARD WIPER SWITCH TEST
AP BODY
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. The identity of each terminal is shown
in Fig. 23.
INTERMITTENT WIPE SWITCH TEST
AC AND AY BODIES
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. The identity of each terminal is shown
in Fig. 24. For test purposes, the first position is the OFF po-
sition, next is the slide for the DELAY wipe. LOW is
the next detent position and HIGH is the full coun-
terclockwise detent position. In any wiper mode, if the knob is pushed all the
way in, the washer circuit will be completed.
AG AND AJ BODIES
To test the switch, remove switch pod from instru-
ment panel. Using an ohmmeter, test for continuity
between the terminals of the switch, as indicated in
the following continuity chart (Fig. 25).
Fig. 23 Standard 2-Speed Wiper Switch Test
Fig. 24 Multi-Function Switch Connector and Intermittent Wipe Continuity
8K - 14 WINDSHIELD WIPER AND WASHER SYSTEMS Ä

WIPER SWITCH SERVICE PROCEDURE
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAG, SEE GROUP 8M, RESTRAINT SYSTEMS FOR
STEERING WHEEL OR COLUMN REMOVAL PROCE-
DURES.
AC AND AY BODIES
The wiper switch is part of the multi-function
switch assembly. If the wiper switch fails, the multi-
function switch must be replaced. Refer to Group 8J,
Turn Signals and Hazard Warning Flasher for multi-
function switch service procedure.
AG AND AJ BODIES
REMOVAL
(1) Remove switch pod assembly from instrument
panel. (2) Remove five inner switch pod panel.
(3) Unhook switch linkage from buttons.
(4) Remove switch mounting screws.
(5) Remove switch.
INSTALLATION (1) Latch switch linkage in the up position.
(2) Insert switch into switch pod and install
mounting screws. (3) Unlatch linkage and install onto push buttons.
(4) Operate all switch modes for correct operation.
(5) Reinstall five inner switch pod panel screws.
(6) Reinstall switch pod assembly.
PULSE INTERMITTENT WINDSHIELD WIPER
CONTROLLER (PIWWC)
The controller is a part of the washing and wiper
system which includes:
² Pulse intermittent windshield wiper controller
² Wiper blades and arms
² Wiper motor
² Windshield washer reservoir
² Wiring harness
² Windshield washer pump
² Windshield washer hoses
Any part not working properly could cause, the
whole system not to work properly or at all. If the
system is not working proper, check all parts before
taking any action of part replacements.
The controller controls the pulse/wipe and the inter-
mittent modes only. The time delay in the intermittent
wipe mode is a minimum of 45 to a maximum of 25 sec-
onds depending on the switch setting.
The wash function can be turn ON with the wiper
control switch in the OFF position. Pressing the
wash button on the end of the level will operate the
washer pump until released. The wipers will operate
while the pump is operating and continue for about
three addition wipes ( 61) after before parking.
AA BODY
The PIWWC (Fig. 26) is attached to a bracket lo-
cated to the right of the steering column behind the
steering column cover (Fig. 27).
AP BODY
The PIWWC is attached to a bracket located to the
right of the steering column behind the steering col-
umn cover (Fig. 28).
Fig. 25 Front Wiper ContinuityÐAG and AJ Bodies
Fig. 26 Pulse Intermittent Windshield Wiper Controller (PIWWC)
Ä WINDSHIELD WIPER AND WASHER SYSTEMS 8K - 15

Fig. 27 PIWWC Location AA-Body
Fig. 28 PIWWC Location AP-Body
8K - 16 WINDSHIELD WIPER AND WASHER SYSTEMS Ä

WINDSHIELD WASHERS INDEX
page page
General Information ....................... 17
Washer Nozzle .......................... 19 Washer Reservoir Pump
................... 18
Washer Reservoirs ....................... 17
GENERAL INFORMATION
All models are equipped with electric operated
windshield washer pumps. The wash function can be accessed in the OFF po-
sition of the wiper control switch. Holding the wash
button depressed when the switch is in the OFF po-
sition will operate the wipers and washer motor
pump continuously until the washer button is re-
leased. Releasing the button will stop the washer
pump but the wipers will complete the current wipe
cycle. Then followed by an average of two more wipe
cycles ( 61) before the wipers park and the module
turns off. Whenever a windshield washer malfunction occurs,
first verify that the windshield washer wire harness
is properly connected to all connectors before starting
normal diagnosis and repair procedures. Refer to
Windshield Washer Diagnosis Chart (Fig. 29). The electric pump assembly is mounted directly to
the reservoir. A permanently lubricated sealed motor
is coupled to a rotor type pump. Fluid, gravity fed
from the reservoir, is forced by the pump through
rubber hoses to the nozzles which direct the streams
to the windshield. The pump and reservoir are serviced as separate
assemblies on all vehicles.
WASHER RESERVOIRS
FRONT WASHER RESERVOIR
REMOVAL
(1) Remove cowl top screen on applicable models
(Fig. 30 through 33) (2) Remove sheet metal screws attaching the reser-
voir in plenum.
Fig. 29 Windshield Washer Diagnosis
Ä WINDSHIELD WIPER AND WASHER SYSTEMS 8K - 17

(3) Disconnect the wiring harness from the reser-
voir pump. (4) Disconnect the washer hose and block the liq-
uid outlet to prevent the liquid from running out
while removing the reservoir from engine compart-
ment.
INSTALLATION (1) Connect washer hose, wiring harness and in-
stall the reservoir in the plenum chamber. (2) Install sheet metal attaching screws. Tighten to
3N Im (24 in. lbs.) torque.
REAR WASHER RESERVOIR
REMOVAL
(1) Unlock and open liftgate.
(2) Remove right rear quarter panel inside trim as
necessary to gain access to reservoir (Fig. 34). (3) Remove two reservoir mounting screws.
(4) Disconnect wiring harness and filler tube from
reservoir and pump assembly. (5) Disconnect the washer hose and block the
pump outlet to prevent liquid from running out. (6) Remove reservoir and pump assembly from
rear quarter panel. INSTALLATION
(1) Position reservoir and pump assembly into the
right rear quarter panel. (2) Connect washer hose, wire harness and filler
tube to the reservoir and pump assembly. (3) Install two reservoir mounting screws.
(4) Install right rear quarter panel inside trim.
WASHER RESERVOIR PUMP
FRONT WASHER RESERVOIR PUMP
REMOVAL
(1) Remove liquid from reservoir.
(2) Remove reservoir mounting screws and remove
reservoir and pump assembly (Fig. 30 through 33). (3) Disconnect electrical lead and rubber hose from
bottom of pump. (4) Gently pry pump away from reservoir and out
of grommet. Care must be taken not to puncture res-
ervoir. (5) Remover rubber grommet from reservoir and
throw away.
INSTALLATION (1) Install new rubber grommet on reservoir.
(2) Position pump into place, and push in firmly
until it locks into grommet.
Fig. 30 Windshield Washer SystemÐAG and AJ Bodies
8K - 18 WINDSHIELD WIPER AND WASHER SYSTEMS Ä

(3) Connect electrical lead and rubber hose to pump.
(4) Position reservoir into place and install mount-
ing screws. (5) Fill reservoir.
REAR WASHER RESERVOIR PUMP
REMOVAL
(1) Remove washer reservoir and pump assembly,
refer to Washer Reservoir Removal. (2) With mechanical fingers, loosen pump filter
and nut through liquid filler opening. (3) Disconnect the outside portion of the pump.
(4) Remove inner and outer portions of the pump,
and remove pump.
INSTALLATION (1) Install rubber grommet into place in bottom of
reservoir. (2) Position pump into place, install nut through
filler opening and tighten with mechanical fingers. (3) Install reservoir and pump assembly, refer to
Reservoir Installation.
WASHER NOZZLE
FRONT WASHER NOZZLE
These models are equipped with the washer nozzles
attached to the wiper arms. Each arm emit five streams across the wiper pattern. These washer sys-
tems requires no adjustment. If nozzle performance is
unsatisfactory, they should be replaced. The right
and left nozzles are identical.
REMOVAL To remove unsnap nozzle from wiper arm and dis-
connect hose.
INSTALLATION
To install make sure that both the nozzle and the
hose guard are securely snapped into position.
REAR WASHER NOZZLE
REMOVAL
(1) Pull washer nozzle out of mounting grommet
(Fig. 35). (2) Disconnect hose from nozzle.
INSTALLATION (1) Connect the hose to the nozzle.
(2) Moisten the nozzle and hose.
(3) Insert nozzle into mounting grommet.
(4) Align nozzle.
(5) Open liftgate.
(6) Verify engagement of hose grommets to vehicle
body and liftgate.
Fig. 31 Windshield Washer SystemÐAC and AY Bodies
Ä WINDSHIELD WIPER AND WASHER SYSTEMS 8K - 19

Fig. 32 Windshield Washer SystemÐAA Body
Fig. 33 Windshield Washer SystemÐAP Body
8K - 20 WINDSHIELD WIPER AND WASHER SYSTEMS Ä