1993 CHEVROLET PLYMOUTH ACCLAIM key battery

(1) Be sure that the module has a battery feed
from the 20 Amp breaker in cavity 1 of the black
connector. Also affected would be the optical horn
and the stop lamps. (2) Be sure that the module has an ignition feed
from 5 Amp fuse in cavity 8 of the black connector.
Also affected would be the body computer, instru-
ment cluster and message center. (3) Be sure that the module has a ground from the
right side cowl behind the body computer to the cav-
ity 5 of the black connector. (4) Be sure that you are supplying a good ground
to the programming wire. (5) If the above circuits are good, replace the Re-
ceiver Module. CONDITION: Doors can be locked or unlocked with
the Keyless Entry transmitter. But the doors will not
lock. The Vehicle Theft Alarm system will not arm,
when using only the power door LOCK switch in the
driver's door. (1) Be sure you have not left key in the ignition
column lock cylinder. (2) If step 1 is OK, check the Key in Lock switch
circuit in the steering column for a short to ground. (3) In this problem the body computer controls the
LOCK function. Be sure that it is providing a battery
voltage output to the door lock relay. The door lock
relay controls the door lock motors. CONDITION: Doors will lock but Vehicle Theft
System will not arm when using the transmitter. (1) The Keyless Entry Receiver Module controls
the door lock signal to the door lock relay. The door
lock relay controls the door lock motors. Check for
battery voltage at cavity 10 of the Theft Alarm mod-
ule from the Receiver module. (2) If voltage is OK, replace Receiver module.
CONDITION: All doors except driver's door will
lock with the transmitter. (1) Test the driver's door output of the Receiver
Module for a ground. (2) If there is no ground at the pin, replace the Re-
ceiver module. (3) If there is a ground at the output, replace the
door lock motor. CONDITION: Only driver's door will lock with the
transmitter.
² Repair ground circuit to unlock relay
² Replace unlock relay
CONDITION: Doors do not lock with the transmit-
ter, but still get horn CHIRP that indicates that they
did lock. Replace Receiver module. CONDITION: Doors will lock with the transmitter
but there is no horn CHIRP. (1) Press horn button, listen horn sound.
(2) If the horn sounded, change horn relay. (3) Still no CHIRP, check continuity between the
horn relay and the receiver output pin. Repair as
necessary. (4) Still no horn CHIRP, replace the receiver mod-
ule. (5) If using a DRB II, refer to Body Diagnostic Pro-
cedures.
REMOTE KEYLESS MODULE REPLACEMENT
(1) Remove lower right instrument panel silencer.
(2) Remove glove box assembly.
(3) Remove three screws attaching the mounting
bracket to instrument panel. (4) Lower bracket and module assembly, to discon-
nect wire connector. (5) Remove two screws attaching the Remote Key-
less entry Module to bracket. (6) Remove two screws attaching the security mod-
ule to bracket. (7) To installation reverse above procedures.
LAMP OUTAGE MODULE REPLACEMENT
(1) Remove lower right instrument panel silencer.
(2) Remove glove box and ash receiver module.
(3) Remove three screws attaching the mounting
bracket to instrument panel. (4) Lower bracket and module assembly, to discon-
nect wire connectors. (5) Remove two screws attaching the Lamp Outage
Module to bracket. (6) Remove two screws attaching the security mod-
ule to bracket. (7) To installation reverse above procedures.
DOOR LOCK INHIBIT
The power door lock inhibit system prevents the
doors from being locked using the power door locks
when either of two conditions occur: (1) The key is in the ignition switch and any of the
doors are open. The ignition switch does not have to
be ON. (2) The key is in the ignition switch and the head-
lamp are on.
AC, AG, AJ AND AY BODIES
With the ignition switch in the ON or OFF position
and the driver's door open the Body Controller will
ignore the command to lock the power door locks.
Once the key is removed, or the driver's door is
closed, the Body Controller will allow the power door
locks to lock. Refer to Body Diagnostic Procedure
Manual for further testing procedures.
8P - 6 POWER LOCKS Ä

AA BODY
Uses a power door lock inhibit relay. The relay is
located above the glove box compartment.
INHIBIT RELAY
(1) Using a voltmeter, test for battery voltage at
pin 4. If no voltage check fuse 15 (Fig. 13). (2) Using a ohmmeter, check for continuity to
ground at pin 8. If no continuity to ground, check in-
strument panel ground. (3) To check pin 5:(a) The key is in the ignition switch and a door
is open. (b) The key is in the ignition switch and the
headlamps are ON. (c) Test for continuity to ground.
(d) If not, the relay contact is open or the relay is
being energized when it should not be. Pin 5 feeds
the ground from the relay to door lock switch.
(4) To check pin 6: (a) The key is in the ignition switch and a door
is open. (b) The key is in the ignition switch and the
headlamps are ON. (c) Test for continuity to ground.
(d) If not, check key in switch, headlamps on
switch and/or door jamb switches. Pin 6, feeds
ground from key in switch to the relay.
Fig. 13 Inhibit Relay Connector
8P - 8 POWER LOCKS Ä

VEHICLE THEFT SECURITY SYSTEM
CONTENTS
page page
GENERAL INFORMATION .................. 1
SECURITY SYSTEM DOOR SWITCH REPLACEMENT ........................ 2
SECURITY SYSTEM HOOD SWITCH REPLACEMENT ........................ 2 SYSTEM SELF-TESTS
.................... 1
VEHICLE THEFT SECURITY SYSTEM MODULE REPLACEMENT ........................ 2
WHAT WILL TRIGGER THE SYSTEM ........ 1
GENERAL INFORMATION
JUMP-STARTING, VEHICLE EQUIPPED
WITH THEFT SECURITY SYSTEM . After the
booster battery has been connected, the Theft System
must be turned OFF. Using the key, lock then un-
lock either front door. This turns the Theft System
OFF and the remainder of the Jump-Starting proce-
dure can be followed. If this procedure is not followed, the Theft System
electronics will prevent the engine from starting. If a new Powertrain Control Module is installed,
the engine has to be cranked 20 times before the
alarm system activated. This passive system is designed to protect against
whole vehicle theft. The system monitors vehicle
doors, hood, trunk key cylinder, and ignition action
for unauthorized operation. The alarm activates by
sounding the horn, flashing the park and tail lamps,
and providing an engine kill feature (Fig. 1). Passive arming occurs upon normal vehicle exit,
open door, lock with power locks, close door. The SET
lamp in the panel will flash for 15 seconds, indicat-
ing that arming is in progress. If no monitored sys-
tems are activated during this period, the system
will arm. If the hood or trunk key cylinder switches
are not sensed by the system. The SET lamp will re-
main lit during the arming process, although the sys-
tem will still arm. The system is to be considered as
an active armed system when using the Remote Key-
less Entry. If the SET lamp does not illuminate at all
upon door closing it indicates that the system is not
arming. Passive disarming occurs upon normal vehicle en-
try unlocking either door with the key, or unlocking
using the Remote Keyless transmitter. This disarm-
ing will also halt the alarm once it has been acti-
vated. Whenever the battery is disconnected and recon-
nected, the Vehicle Theft Security System enters
power up alarm mode which flashes the park and tail
lamps and prevents the engine from running. To exit
this mode, the system must be disarmed as men-
tioned above. A tamper alert exists to notify the driver that the
alarm had been activated, and the alarm has since
timed-out for more than 18 minutes. This alert con-
sists of 3 horn pulses when the vehicle is disarmed. The alarm system will not arm if the doors are
manually locked, providing a manual override of the
alarm.
WHAT WILL TRIGGER THE SYSTEM
One of the following actions will trigger the system
while it is armed. Without properly disarming sys-
tem, by using the key or the remote transmitter. (1) Opening the HOOD.
(2) Opening any DOOR.
(3) Removing the TRUNK KEY CYLINDER.
(4) Turning the IGNITION ON.
(5) The ignition switch can be turned to the acces-
sory position without triggering alarm system.
SYSTEM SELF-TESTS
A diagnostics mode is available in the system to
verify operation of all monitored switches or circuits.
To enter diagnostics, cycle the ignition key to the ac-
cessory position 3 times, leaving the key in this po-
sition. Upon entering diagnostics, the park and tail lamps
will begin flashing to verify their operation. In addi-
tion, the horn will sound twice to indicate that the
trunk key cylinder is in its proper position. Return-
ing the ignition to the OFF position will stop the
lamps from flashing while keeping the system in di-
agnostics. While in diagnostics mode, a horn pulse should oc-
cur at each of the following events indicating proper
operation: (1) Beginning with all doors closed, open then close
each door. The horn will sound when the door ajar
switch closes, and then again when the switch opens.
There must b e a 1 second delay between closing and
opening the switch. (2) Open, then close the hood. The horn will sound
when the hood is opened, and again when it is closed.
Ä VEHICLE THEFT SECURITY SYSTEM 8Q - 1

HEADLAMPS LEFT ON
To test the headlamps left on function, turn head-
lamps on with drivers door open. Chime should
sound until headlamps are turned off or drivers door
is closed.
KEY LEFT IN IGNITION
To test the key left in ignition function, insert key
into the ignition and open drivers door. Chime
should sound until key is removed from ignition or
drivers door is closed.
CHIME SYSTEM DIAGNOSISÐAA AND AP BODIES
WARNING: ON VEHICLES EQUIPPED WITH AN AIR
BAG REFER TO THE AIR BAG PORTION OF THIS SECTION FOR STEERING WHEEL OR SWITCH RE-
MOVAL AND INSTALLATION PROCEDURES.
CONDITION: NO TONE WHEN IGNITION
SWITCH IS TURNED ON AND DRIVERS SEATBELT OR AUTOMATIC SHOULDER HARNESSIS UNBUCKLED
PROCEDURE
(1) Check seat belt buckle switch (drivers seat) or
rotary switch in automatic shoulder harness retrac-
tor for a ground when unbuckled. (2) Check for battery feed at terminal 6 and igni-
tion feed at terminal 4 of chime module (Fig. 4 and
5).
Fig. 3 Seat Belt Warning System Diagnosis
Fig. 4 Chime Module Terminal IdentificationFig. 2 Buzzer System Wiring Schematic
8U - 2 CHIME WARNING/REMINDER SYSTEM Ä

(3) Check for tone in any other function.
CONDITION: NO FASTEN SEAT BELT LAMP WHEN IGNITION SWITCH IS TURNED ON.
PROCEDURE
(1) Check for burned out lamp.
(2) Check for battery feed at terminal 6 and lamp
output at terminal 3 of chime module. (3) Check for ignition feed at terminal 4 of chime
module.
CONDITION: FASTEN SEAT BELT LAMP OR TONE CONTINUE FOR MORE THAN TENSECONDS AFTER SEAT BELTS AREFASTENED AND DRIVERS DOOR IS CLOSED
PROCEDURE
(1) Check left door jamb switch.
(2) Check chime module.
CONDITION: NO TONE WHEN HEADLAMPS ARE ON AND DRIVERS DOOR IS OPEN
PROCEDURE
(1) Check left door jamb switch for good ground
when drivers door is open. (2) Check wiring connector for good contact at
chime module. (3) Check for battery feed at terminal 6 of chime
module. (4) Check headlamp switch.
CONDITION: NO TONE WHEN KEY IS LEFT IN
IGNITION AND DRIVERS DOOR IS OPEN
PROCEDURE
(1) Check left door jamb switch for good ground
when drivers door is open. (2) Check wiring connector for good contact at
chime module. (3) Check for battery feed at terminal 6 of chime
module. (4) Check key-in switch.
CONDITION: CHIMES CONTINUE WHENHEADLAMPS ARE TURNED OFF AND/OR KEYIS REMOVED FROM IGNITION
PROCEDURE
(1) Check wiring for a grounded condition between
headlamp switch, key-in switch and chime module. (2) Check chime module.
CHIME SYSTEM DIAGNOSISÐAC, AG, AJ AND AY
BODIES
CONDITION: NO TONE WHEN IGNITION IS
TURNED ON AND DRIVER'S SEAT BELT ISUNBUCKLED
PROCEDURE
(1) Check driver's seat belt buckle switch for a
ground when unbuckled.
Fig. 5 Chime Module WiringÐAA and AP Bodies
Ä CHIME WARNING/REMINDER SYSTEM 8U - 3

CONDITION: NO TONE WHEN HEADLAMPS ARE ON AND DRIVER'S DOOR IS OPEN, ANDIGNITION IS OFF
PROCEDURE
(1) Check left door jamb switch for good ground
when driver's door is open. This may be checked at
terminal 1 of 25-way body controller connector. (2) Check for battery feed at terminal 16 of 25-way
body controller connector. (3) Check headlamp switch.
CONDITION: NO TONE WHEN KEY IS LEFT INIGNITION AND DRIVER'S DOOR IS OPEN
PROCEDURE
(1) Check left door jamb switch for good ground
when driver's door is open. This may be checked at
terminal 1 of 25-way body controller connector. (2) Check for battery feed at terminal 16 of 25-way
body controller connector. (3) Check key-in switch.
CONDITION: CHIMES CONTINUE WHENHEADLAMPS ARE TURNED OFF AND/OR KEYIS REMOVED FROM IGNITION
PROCEDURE
Check wiring for a grounded condition between
headlamp switch, key-in switch, and body controller.
SERVICE PROCEDURES
CHIME MODULE REPLACEMENT AA and AP
BODIES
(1) Open glove box door and disconnect check strap.
(2) Disconnect glove box light switch.
(3) Remove screws from glove box assembly and
remove. (4) Remove two screws from chime module mount-
ing bracket (Figs. 9 and 10). (5) Disconnect chime module wiring and remove
module. (6) For installation reverse above procedures.
BODY CONTROLLER REPLACEMENT
Refer to Group 8E, Instrument Panel and Gauges.
SEAT BELT BUCKLE REPLACEMENT
Refer to Group 23, Body of this service manual.
HEADLAMP SWITCH REPLACEMENT
Refer to Group 8E, Instrument Panel and Gauges.
KEY-IN SWITCH REPLACEMENT
The Key-in switch is built into the ignition switch as-
sembly. Should the Key-in switch require service, the
ignition switch assembly must be replaced. Refer to
Group 8D Ignition System of this service manual (Fig.
11).
Fig. 9 Chime Module LocationÐAA Body
Fig. 10 Chime Module Location
Fig. 11 Halo Lamp and Key-In Warning Switch Continuity
Ä CHIME WARNING/REMINDER SYSTEM 8U - 5

Wiring Diagram
Name Sheet Number
Splice Z1-8 ...............................58
Splice Z1-10 ........................... .73, 84
Splice Z2 ........................ .34, 63, 95, 99
Splice Z12 ....................... .14, 20, 29, 36
Splice Z13-1 ..............................35
Splice Z14 ...............................36
Starter System (3.0L) ..........................10
Engine Starter Relay .........................10
Field Coil Engine Starter Motor ...................10
Switches A/C Cycling Switch ....................... .71, 72
A/C Damped Pressure Switch .................71, 72
A/C Blower Switch ....................... .71, 72
A/C Heater Control Switch .................. .71, 72
A/C High Pressure Switch .................. .32, 72
Automatic Transmission Park/Neutral Position Switch .....9
Back-up Lamp Switch .........................9
Blower Switch .............................71
Brake Switch ..............................59
Brake Warning Lamp Switch ....................11
Deck Lid Ajar Courtesy Lamp Switch ...............78
Defrost A/C Switch ....................... .71, 72
Engine Oil Pressure Switch ..................39, 40
Fog Lamp Switch ...........................48
Front Reading Lamp Switch ....................75
Glove Box Lamp Switch .......................54
Headlamp Switch .........................1,49
Headlamp Dimmer Switch ....................1,50
Heated Rear Window Switch .................4,5,84
Heater Bi-Level Control Switch ...................68
Heater Control Switch ........................68
Horn Switch ..............................65
Ignition Switch ........................4,11,44
Key-In Switch .............................46
Left Door Illuminated Entry Switch ................58
Left Front Door Jamb Switch ...............46, 53, 75
Left Rear Door Ajar Switch .....................78
Left Rear Door Jamb Switch ....................76
Low Fuel Switch ............................69
Manual Transmission Back-Up Lamp Switch ...........9
Mercury Switch ......................... .39, 40
Multi-Function Switch .................. .50, 62, 63
Optical Horn and Headlamp Dimmer Switch ..........50
Park Brake Switch ....................... .11, 44
Park/Neutral Position Switch ....................37
Power Door Lock Left Front Switch ................85
Power Door Lock Right Front Switch ...............86
Power Mirror Switch .........................79
Power Seat Switch-Left .......................66
Power Steering Pressure Switch ..................25
Power Window Left Front Master Switch ............81
Power Window Left Rear Switch .................81
Power Window Right Front Switch ................82
Power Window Right Rear Switch .................82
Right Door Illuminated Entry Switch ...............58
Right Front Door Ajar Switch ....................78
Right Front Door Jamb Switch ................54, 74Wiring Diagram
Name Sheet Number
Right Rear Door Jamb Switch ...................73
Rotary Ignition Switch ........................11
Seat Belt Switch ............................46
Stop Lamp Switch ..........................59
Transmission Range Switch .....................36
Transmission Solenoids & Pressure Switch ...........35
Vehicle Speed Control Switch ...................59
TCM Harness Connectors ...................... .111
Throttle Body Fuel Injection Ignition System (2.5L) ....................... .12, 13, 14, 15, 16
Automatic Shut-down Relay ....................14
Distributor ...............................15
Engine Coolant Sensor ........................15
EVAP/Purge Solenoid .........................13
Exhaust Gas Recirculation Diagnostic Solenoid .........13
Heated Oxygen Sensor ........................12
Idle Air Control Motor ........................12
Ignition Coil ...............................14
Injector .................................16
MAP Sensor ..............................13
Powertrain Control Module ...........12, 13, 14, 15, 16
Throttle Position (Sensor) ......................12
Vehicle Speed Sensor ........................15
Time Delay Relay System .................... .53, 54
Glove Box Lamp and Switch ....................54
Halo Lamp ...............................54
Left Front Door Jamb Switch ....................53
Right Front Door Jamb Switch ...................54
Time Delay Relay ...........................54
Transmission Control System (3.0L Engine Only) ........................ .34, 35, 36, 37, 38
Back-Up Lamp Relay .........................37
Output Speed Sensor .........................38
Park/Neutral Position Switch ....................37
Powertrain Control Module .................. .34, 36
Safety Shut-Down Relay .......................35
Transmission Control Module ..........34, 35, 36, 37, 38
Transmission Range Switch .....................36
Transmission Solenoids and Pressure Switch ..........35
Turbine Speed Sensor ........................38
Traveler and Message Center .....................60
Turn & Hazard Flasher Systems .................61, 62
Hazard Flasher .............................61
Multi-Function Switch ........................62
Turn Signal Flasher ..........................61
Underhood Lamp ......................... .39, 40
Battery .............................. .39, 40
Mercury Switch ......................... .39, 40
Underhood Lamp ........................ .39, 40
Unified Body to Rear Body Wiring .................122
Vehicle Speed Control Servo ......................59
Vehicle Speed Control System and Stop Lamp Switch ......59
Clockspring ...............................59
Powertrain Control Module .....................59
Stop Lamp Switch with Vehicle Speed Control .........59
Stop Lamp Switch without Vehicle Speed Control .......59
Vehicle Speed Control Servo ....................59
8W - 186 WIRING DIAGRAMS AA-BODY Ä

WIRING DIAGRAMS AC-AY BODY INDEX
Wiring Diagram
Name Sheet Number
ABS Data Link Connector ........................49
Airbag System ........................... .57, 58
Clockspring ...............................57
Diagnostic Module ..........................57
Interface Grommet ..........................58
Sensor-Left ...............................58
Sensor-Right ..............................58
Squib (Airbag Igniter) ........................57
Air Conditioning and Heater System (2.5L) .............53
A/C Switch ...............................53
Blower Motor ..............................53
Compressor ...............................53
Defrost Switch .............................53
Diode ...................................53
Illumination Lamps ..........................53
Low Pressure Switch .........................53
Resistor .................................53
Switch-Blower .............................53
Air Conditioning Variable Output Compressor ..........113
Air Exhaust Solenoid-Automatic Air Load Leveling ........40
Air Suspension System .................41, 42, 43, 44
Air Exhaust Solenoid .........................42
Air Suspension Relay .........................42
Air Suspension System Control Module .......41, 43, 176
Compressor Assembly ........................42
Compressor Motor ..........................42
Height Sensors ............................44
Shock Absorber ............................43
Solenoids ............................ .41, 44
Air Suspension System Control Module .........41, 43, 176
Antennas ............................. .118, 126
Anti-Lock Brake System ............45, 46, 47, 48, 49, 50
ABS System Relay ..........................47
Controller .................. .45, 46, 47, 48, 49, 50
Data Link Connector .........................49
Left Front Wheel Sensor .......................50
Left Rear Wheel Sensor .......................50
Modulator ............................ .45, 48
Pump Motor ..............................46
Pump and Motor Relay .......................46
Right Front Wheel Sensor ......................50
Right Rear Wheel Sensor ......................50
Yellow Lamp Relay ..........................49
Anti-Lock Brake System Controller .....45, 46, 47, 48, 49, 50
Anti-Lock Brake System Modulator Connectors .........172
Anti-Lock Brake System Controller Connector ..........175
Anti-Lock Brake System Modulator ...............45, 48
ATC In-line Connector ........................ .117
Automatic Air Load Leveling System ..............39, 40
Air Exhaust Solenoid .........................40
Compressor Assembly ........................40
Compressor Motor ..........................40Wiring Diagram
Name Sheet Number
Load Leveling Relay .........................40
Shock Absorber ............................40
Automatic Day/Night Mirror .................... .124
Automatic Temperature Control .............115, 116, 117
A/C Blower Motor ......................... .115
Ambient Sensor .......................... .117
ATC Control Switch ........................ .116
ATC In Line Connector ...................... .117
ATC Power Module ........................ .115
In Car Senso r............................ .115
In Car Sensor Motor ....................... .115
Sun Sensor ............................. .115
Water Sensor ............................ .117
Automatic Temperature Control (Radiator and
Compressor 3.3L & 3.8L) .................. .113, 114
A/C Ambient Temperature Switch ................114
A/C Compressor Clutch Relay ...................113
A/C Fan Cutout Switch ...................... .114
A/C High Pressure Cutout Switch ................114
A/C Low Pressure Switch .................... .114
A/C Variable Output Compressor .................113
Diode ................................. .113
Radiator Fan Motor ........................ .113
Radiator Fan Relay ........................ .114
Automatic Shutdown Relay .......................29
Automatic Temperature Control In-line Connector ........206
Automatic Temperature Control Module Connector .......200
Back-Up Lamp Relay ..........................33
Battery ...............................2,5,7,9
Body Computer 2 (Electronic Cluster) .........101, 102, 194
25-Pin Connector ...................... .101, 102
Body Computer 1 (Electronic Cluster) .........103, 104, 195
25-Pin Connector ...................... .103, 104
Data Link Connector ....................... .103
Halo Lamp .............................. .104
Relay ................................. .103
Body Computer (Mechanical Cluster w/Visual Message Ctr) ......................... .196, 197
Body Computer (Mechanical Cluster w/o Visual Message Ctr) ......................... .198, 199
Body Computer 1 (Mechanical Cluster w/o Visual Message Ctr) ..................... .108, 109, 110
25-Pin Connector ................... .108, 109, 110
Data Link Connector ....................... .110
Halo Lamp .............................. .108
Key-In Switch ............................ .109
Relay Bank ............................. .108
Body Computer 2 (Mechanical Cluster with Visual Message Ctr) ..................... .105, 106, 107
25-Pin Connector ................... .105, 106, 107
Data Link Connector ....................... .106
Halo Lamp .............................. .106
Key-In Switch ............................ .107
Ä WIRING DIAGRAMS AC-AY BODY 8W - 313