1993 CHEVROLET PLYMOUTH ACCLAIM clock setting

MESSAGE CENTER
The message center is a car graphic warning lamp
module. This conventional warning system and lo-
cated above the headlamp switch.
ELECTRONIC DIGITAL CLOCK
The electronic digital clock is in the radio. The
clock and radio each use the display panel built into
the radio. A digital readout indicates the time in
hours and minutes whenever the ignition switch is in
the ON or ACC position. When the ignition switch is in the OFF position, or
when the radio frequency is being displayed, time
keeping is accurately maintained. The procedure for setting the clock varies slightly
with each radio. The correct procedure is described
under the individual radio operating instructions re-
ferred to in the Owner's Manual supplied with the
vehicle.
AIR BAG WARNING SYSTEM
For testing of this system refer to Group 8M, Re-
straint Systems.
MECHANICAL CLUSTER AND GAUGE SERVICE
CAUTION: Disconnect negative battery cable, in en-
gine compartment, before servicing instrument
panel. When power is required for test purposes,
reconnect battery cable for the test only.
Disconnect negative battery cable after test and be-
fore continuing service procedures.
SENDING UNIT TEST
When a problem occurs with a cluster gauge, be-
fore disassembling the cluster to check the gauge,
check for a defective sending unit or wiring. (1) Sending units and wiring can be checked by
grounding the connector leads, at the sending unit,
in the vehicle. (2) With the ignition in the ON position; a
grounded input will cause the oil, fuel or tempera-
ture gauge to read at or above maximum.
CHECK GAUGES WARNING LAMP TESTS
The check gauges warning lamp is illuminated by
the low oil pressure sending unit switch or the body
controller when there is high temperature or charg-
ing system failure. To test the lamp, turn ignition key to the ON po-
sition without starting the vehicle. The low oil pres-
sure switch is grounded and the light will be on
indefinitely. If the lamp fails to light, pull the cluster and check
the following: (a) Continuity between ground and check gauge
pin J (Fig. 3). (b) Proper contact between the gauge pins and
wiring harness and printed circuit board pins. (c) If there is ground and proper pin contact, re-
place lamp. (d) If there is no continuity, check the low oil
pressure sending unit switch (Fig. 4 and 5).
To test the switch disconnect the switch electrical
connector. Attach positive lead of an ohmmeter to
the switch terminal for the gray (GY) wire and the
negative lead to an engine ground. With the engine
Fig. 3 Mechanical Cluster Connectors
8E - 24 INSTRUMENT PANEL AND GAUGES Ä

ELECTRONIC DIGITAL CLOCK
The electronic digital clock is in the radio. The
clock and radio each use the display panel built into
the radio. A digital readout indicates the time in
hours and minutes whenever the ignition switch is in
the ON or ACC position. When the ignition switch is in the ON or OFF po-
sition, or when the radio frequency is being dis-
played, time keeping is accurately maintained. The procedure for setting the clock varies slightly
with each radio. The correct procedure is described
under the individual radio operating instructions re-
ferred to in the Owner's manual supplied with the
vehicle.
WARNING LAMPS
The AG & AJ Body instrument clusters have warn-
ing lamps or indicators with the electronic cluster for
six different systems. These include low oil pressure,
check gauges, brake system, air bag, seat belt, mal-
function indicator (check engine) lamp.
CLUSTER AND GAUGE SERVICE AND TESTING
CAUTION: Disconnect negative battery cable, in en-
gine compartment, before servicing instrument
panel. When power is required for test purposes,
reconnect battery cable for test only. Disconnect negative battery cable after test and be-
fore continuing service procedures. It is not necessary to remove instrument cluster
from vehicle for gauge replacement. Gauges must be pulled straight out, when remov-
ing or pins may be damaged.
SWITCH POD ASSEMBLY REMOVAL
(1) Disconnect negative battery cable.
(2) Pry up edge of panel vent grille, using a
straight flat edge tool to disengage clips, then re-
move grille (Fig. 4). (3) Remove two screws located under panel vent
grille. (4) Remove two screws underneath switch POD as-
sembly. (5) With tilt steering adjust steering wheel to the
lowest setting. (6) Pull switch module rearward to remove module
and disconnect all wire connections. (7) For Installation reverse above procedures.
Tighten all screws to 2 N Im (20 in. lbs.) torque.
MECHANICAL/ELECTRONIC CLUSTER REMOVAL
CLUSTER MASK AND LENS REMOVAL
(1) Remove switch pod assembly (Fig. 4).
(2) Remove tilt column lever if equipped.
(3) Remove steering column trim cover.
Fig. 4 Switch POD Assembly
Ä INSTRUMENT PANEL AND GAUGES 8E - 43

AP BODY INDEX
page page
Cluster and Gauge Service and Testing ....... 58
Gauges ................................ 61
General Information ....................... 58 Instrument Panel Replacement
.............. 72
Interior Lamp Replacement ................. 73
Switch and Panel Component Service ......... 67
GENERAL INFORMATION
INSTRUMENT CLUSTER
There are two conventional instrument cluster as-
semblies available. The clusters incorporates mag-
netic type gauges and an electronically driven
speedometer and odometer assembly (Fig. 1 and 2).
MAGNETIC GAUGES
All gauges on the AP Body clusters are the mag-
netic type gauges. When the ignition switch is in the
OFF position each gauge, except for the voltmeter
and tachometer will show a reading. However, the
readings are only accurate when the ignition switch
is in the ON position.
TACHOMETER DRIVE MODULE
The tachometer drive module is an electronic mod-
ule used to drive the magnetic tachometer in the
high line cluster. This module is located on top of the instrument
cluster.
ELECTRONIC DIGITAL CLOCK
The electronic digital clock is in the radio. The
clock and radio each use the display panel built into
the radio. A digital readout indicates the time in
hours and minutes whenever the ignition switch is in
the ON or ACC position. When the ignition switch is in the OFF position, or
when the radio frequency is being displayed, time
keeping is accurately maintained. The procedure for setting the clock varies slightly
with each radio. The correct procedure is described
under the individual radio operating instructions re-
fer to the Sound Systems Manual supplied with the
vehicle.
WARNING LAMPS AND INDICATOR LIGHTS
The instrument cluster has warning and indicators
lamps for eight different systems:
² Low oil pressure
² Brake warning
² Seat belt warning
² Malfunction indicator (check engine) lamp
² Air Bag
² High beam indicator
² Right and left turn signals.
² Anti-lock (ABS)
CLUSTER AND GAUGE SERVICE AND TESTING
CAUTION: Disconnect the negative battery cable
before servicing the instrument panel. When power
is required for test purposes, reconnect battery ca-
ble for test only. Disconnect the negative battery
cable after test and before continuing service pro-
cedures.
SENDING UNIT TEST
Check for a defective sending unit or wiring, when
a problem occurs with a cluster gauge. Do this before
disassembling the cluster. (1) Sending units and wiring can be checked by
grounding the connector leads, at the sending unit,
in the vehicle. (2) With the ignition in the ON position, a
grounded input will cause the fuel or temperature
gauge to read at or above maximum.
Fig. 1 Instrument Cluster With Tachometer
Fig. 2 Instrument Cluster Without Tachometer
8E - 58 INSTRUMENT PANEL AND GAUGES 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

(3) Move selector lever on transaxle one detent
forward from full rearward position. This is selector
2 position.
(4) Read pressures on both gauges as throttle lever
on transaxle is moved from full clockwise position to
full counterclockwise position. (5) Line pressure should read 52 to 58 psi with
throttle lever clockwise and gradually increase, as le-
ver is moved counterclockwise, to 80 to 88 psi. (6) Lubrication pressure should be 10 to 25 psi
with lever clockwise and 10 to 35 psi with lever full
counterclockwise. (7) This tests pump output, pressure regulation,
and condition of rear clutch and lubrication hydrau-
lic circuits.
TEST THREE (SELECTOR IN D)
(1) Attach gauges to lineandkickdown release
ports (Fig. 3). (2) Operate engine at 1600 rpm for test.
(3) Move selector lever on transaxle two detents
forward from full rearward position. This is selector
D position.
(4) Read pressures on both gauges as throttle lever
on transaxle is moved from full clockwise position to
full counterclockwise position. (5) Line pressure should read 52 to 58 psi with
throttle lever clockwise and gradually increase, as le-
ver is moved counterclockwise to 80 to 88 psi. (6) Kickdown release is pressurized only in direct
drive and should be same as line pressure within 3
psi, up to kickdown point. (7) This tests pump output, pressure regulation,
and condition of rear clutch, front clutch, and hy-
draulic circuits.
TEST FOUR (SELECTOR IN REVERSE)
(1) Attach 300 psi gauge to low-reverseport (Fig.
3). (2) Operate engine at 1600 rpm for test.
(3) Move selector lever on transaxle four detents
forward from full rearward position. This is selector
R position.
(4) Low-reverse pressure should read 180 to 220
psi with throttle lever clockwise and gradually in-
crease, as lever is moved counterclockwise to 260 to
300 psi. (5) This tests pump output, pressure regulation,
and condition of front clutch and rear servo hydraulic
circuits. (6) Move selector lever on transaxle to Dposition
to check that low-reverse pressure drops to zero. (7) This tests for leakage into rear servo, due to
case porosity, which can cause reverse band burn
out.
TEST RESULT INDICATIONS
(1) If proper line pressure, minimum to maximum, is
found in any one test, the pump and pressure regulator
are working properly. (2) Low pressure in D, 1, and 2but correct pressure
in Rindicates rear clutch circuit leakage.
(3) Low pressure in D and Rbut correct pressure in
1 indicates front clutch circuit leakage.
(4) Low pressure in R and 1but correct pressure in
2 indicates rear servo circuit leakage.
(5) Low line pressure in all positions indicates a
defective pump, a clogged filter, or a stuck pressure
regulator valve.
GOVERNOR PRESSURE
Test only if transaxle shifts at wrong vehicle speeds
when throttle cable is correctly adjusted. (1) Connect a 0-150 psi pressure gauge to governor
pressure take-off point, located at lower right side of
case, below differential cover (Fig. 3). (2) Operate transaxle in third gear to read pres-
sures. The governor pressure should respond smoothly
to changes in mph and should return to 0 to 3 psi when vehicle is stopped. High pressure at
standstill (above 3 psi) will prevent the transaxle from
downshifting.
THROTTLE PRESSURE
No gauge port is provided for throttle pressure.
Incorrect throttle pressure should only be suspected if
part throttle upshift speeds are either delayed or occur
too early, with a correctly adjusted throttle cable.
Engine runaway on either upshifts or downshifts can
also be an indicator of incorrect (low) throttle pressure
setting, or misadjusted throttle cable. In no case should throttle pressure be adjusted until
the transaxle throttle cable adjustment has been veri-
fied to be correct.
CLUTCH AND SERVO AIR PRESSURE TESTS
A no drive condition might exist even with correct
fluid pressure, because of inoperative clutches or
bands. The inoperative units, clutches, bands, and
servos can be located through a series of tests by
substituting air pressure for fluid pressure (Fig. 4). The front and rear clutches, kickdown servo, and
low-reverse servo may be tested by applying air pres-
sure to their respective passages after the valve body assembly has been removed. To make
air pressure tests, proceed as follows: Compressed air supply must be free of all dirt
or moisture. Use a pressure of 30 psi. Remove oil pan and valve body See Disassembly-
Subassembly Removal .
FRONT CLUTCH
Apply air pressure to front clutch applypassage and
listen for a dull thudwhich indicates that front
Ä TRANSAXLE 21 - 43

so that pump housing and case front may be covered
with soapy solution or water. Leaks are sometimes
caused by porosity in the case or pump housing.If a leak source is located, that part and all associ-
ated seals, O-rings, and gaskets should be replaced
with new parts.
GEARSHIFT LINKAGE ADJUSTMENT
Normal operation of the Park/Neutral Position
Switch provides a quick check to confirm proper
manual linkage adjustment. Move the selector level slowly upward until it
clicks into the ``P'' Park notch in the selector gate. If
the starter will operate the ``P'' position is correct. After checking ``P'' position, move selector slowly
toward ``N'' Neutral position until lever drops in the
``N'' stop. If the starter will also operate at this point
the gearshift linkage is properly adjusted. If the
starter fails to operate in either position, linkage ad-
justment is required.
CAUTION: When it is necessary to disassemble
linkage cable from levers, which use plastic grom-
mets as retainers, the grommets should be replaced
with new grommets. Use a prying tool to force rod
from grommet in lever, then cut away old grommet.
Use pliers to snap new grommet into lever and rod
into grommet.
(1) Set parking brake.
(2) Place gearshift lever in P(PARK) position.
(3) Loosen clamp bolt on gearshift cable bracket.
(4) Column shift: Insure that preload adjustment
spring engages fork on transaxle bracket. (5) Pull the shift lever by hand to the front detent
position (PARK) and tighten lock. Tighten screw to
11 N Im (100 in. lbs.). Gearshift linkage should now
be properly adjusted. (6) Check adjustment as follows:(a) Detent position for neutral and drive should
be within limits of hand lever gate stops. (b) Key start must occur only when shift lever is
in park or neutral positions.
THROTTLE PRESSURE LINKAGE ADJUSTMENT
The throttle pressure cable adjustment is very im-
portant to proper transaxle operation. This adjust-
ment positions a valve which controls shift speed,
shift quality, and part throttle downshift sensitivity.
If the setting is too long, early shifts and slippage be-
tween shifts may occur. If the setting is too short,
shifts may be delayed and part throttle downshifts
may be very sensitive.
CABLE ADJUSTMENT PROCEDURE (4-CYL.)
(1) Perform transaxle throttle pressure cable ad-
justment while engine is at normal operating tem-
perature. (2) Loosen cable mounting bracket lock screw.
(3) Bracket should be positioned with both bracket
alignment tabs touching the transaxle cast surface.
Tighten lock screw to 12 N Im (105 in. lbs.) see Fig-
ure 8.
(4) Release cross-lock on the cable assembly (pull
cross-lock upward) see Figure 7. (5) To insure proper adjustment, the cable must be
free to slide all the way toward the engine, against
its stop, after the cross-lock is released. (6) Move transaxle throttle control lever fully
clockwise, against its internal stop, and press cross-
lock downward into locked position (Fig. 7). (7) The adjustment is complete and transaxle
throttle cable backlash was automatically removed. (8) Test cable freedom of operation by moving the
transaxle throttle lever forward (counterclockwise).
Then slowly release it to confirm it will return fully
rearward (clockwise). (9) No lubrication is required for any component of
the throttle cable system.
ROD ADJUSTMENT PROCEDURE (6-CYL.)
(1) Perform transaxle throttle pressure cable ad-
justment while engine is at normal operating tem-
perature. (2) Loosen adjustment swivel lock screw.
(3) To insure proper adjustment, swivel must be
free to slide along flat end of throttle rod so that pre-
load spring action is not restricted. Disassemble and
clean or repair parts to assure free action, if neces-
sary. (4) Hold transaxle throttle lever firmly toward en-
gine, against its internal stop and tighten swivel lock
screw to 11 N Im (100 in. lbs.)
(5) The adjustment is finished and linkage back
lash was automatically removed by the preload
spring. (6) If lubrication is required see Lubrication,
Group 0.
Fig. 8 Throttle Pressure CableÐTypical
21 - 46 TRANSAXLE Ä

BAND ADJUSTMENT
KICKDOWN BAND (FRONT)
The kickdown band adjusting screw is located on
left side (top front) of the transaxle case. (1) Loosen locknut and back off nut approximately
five turns. Test adjusting screw for free turning in
the transaxle case. (2) Using wrench, Tool C-3880-A with adapter Tool
C-3705, tighten band adjusting screw to 5 N Im (47 to
50 in. lbs.). If adapter C-3705 is not used, tighten ad-
justing screw to 8 N Im (72 in. lbs.) which is the true
torque. (3) Back off adjusting screw the number of turns
listed in Specifications . Hold adjusting screw in this
position and tighten locknut to 47 N Im (35 ft. lbs.)
LOW/REVERSE BAND-REAR
To adjust low-reverse band, proceed as follows:
(1) Loosen and back off locknut approximately 5
turns. (2) Using an inch-pound torque wrench, tighten
adjusting screw to 5 N Im (41 in. lbs.) true torque.
(3) Back off adjusting screw the number of turns
listed under Specifications in the rear of the Tran-
saxle Section in this service manual. (4) Tighten locknut to 14 N Im (10 ft. lbs.).
HYDRAULIC CONTROL PRESSURE ADJUSTMENTS
LINE PRESSURE
An incorrect throttle pressure setting will cause in-
correct line pressure readings even though line pres-
sure adjustment is correct. Always inspect and
correct throttle pressure adjustment before adjusting
the line pressure. The approximate adjustment for line pressure is
1-5/16 inches, measured from valve body to inner
edge of adjusting nut. However, due to manufactur-
ing tolerances, the adjustment can be varied to ob-
tain specified line pressure. The adjusting screw may be turned with an Allen
wrench. One complete turn of adjusting screw
changes closed throttle line pressure approximately
1-2/3 psi. Turning adjusting screw counterclockwise
increases pressure, and clockwise decreases pressure.
THROTTLE PRESSURE
Throttle pressures cannot be tested accurately;
therefore, the adjustment should be measured if a
malfunction is evident. (1) Insert gauge pin of Tool C-3763 between the
throttle lever cam and kickdown valve. (2) By pushing in on tool, compress kickdown
valve against its spring so throttle valve is com-
pletely bottomed inside the valve body. (3) While compressing spring, turn throttle lever
stop screw with adapter C-4553. Turn until head of screw touches throttle lever tang, with throttle lever
cam touching tool and throttle valve bottomed. Be sure
adjustment is made with spring fully compressed and
valve bottomed in the valve body.
VEHICLE SPEED SENSOR PINION GEAR
When the speed sensor is removed for any reason, a
NEW O-ring must be installed on its outside diameter.
REMOVAL AND INSTALLATION
(1) Remove speedometer cable (if so equipped).
(2) Remove harness connector from sensor. Make
sure weatherseal stays on harness connector. (3) Remove bolt securing the distance sensor in the
extension housing. (4) Carefully pull sensor and pinion gear assembly
out of extension housing. (5) Remove pinion gear from sensor.
(6) To install, reverse the above procedure. Make
sure extension housing and sensor flange are clean
prior to installation. Always use a NEW sensor O-ring. (7) Tighten securing bolt to 7 N Im (60 in. lbs.).
Tighten speedometer cable to 4 N Im (35 in. lbs.).
PARK/NEUTRAL POSITION AND BACK-UP LAMP
SWITCH
REPLACEMENT AND TEST
The Park/Neutral switch is the center terminal of the
3 terminal switch. It provides ground for the starter
solenoid circuit through the selector lever in only Park
and Neutral positions. (1) To test switch, remove wiring connector from
switch and test for continuity between center pin of
switch and transaxle case. Continuity should exist only
when transaxle is in Park or Neutral. (2) Check gearshift cable adjustment before replac-
ing a switch which tests bad. (3) Unscrew switch from transaxle case allowing
fluid to drain into a container. Move selector lever to
Park and then to Neutral positions. Inspect to see that
the switch operating lever fingers are centered in
switch opening in the case. (4) Screw the switch with a new seal into transaxle
case and tighten to 33 N Im (24 ft. lbs.). Retest switch
with the test lamp. (5) Add fluid to transaxle to bring up to proper level.
(6) The back-up lamp switch circuit is through the
two outside terminals of the 3 terminal switch. (7) To test switch, remove wiring connector from
switch and test for continuity between the two outside
pins. (8) Continuity should exist only with transaxle in
Reverse position. (9) No continuity should exist from either pin to the
case.
Ä TRANSAXLE 21 - 47