
²Stores transmitter data in permanent memory -
retraining is not required even if the battery dies or
is disconnected.
To operate, simply press the appropriate button on
the Universal Transmitter. The red LED will light up
while the signal is being transmitted.
NOTE: For security reasons, you are able to erase
the trained frequencies.
DIAGNOSIS AND TESTING
READING/DOME LAMP DIAGNOSIS
The dome lamps operate in conjunction with the
Remote Keyless Entry system. Refer to the Wiring
Diagrams group of this manual for component loca-
tions and circuit information. For additional diagnos-
tic information on lamp operation controlled by Body
Control Module (BCM) refer to the Body Diagnostic
Procedures Manual. For diagnosis of the reading
lamps and switches refer to (Fig. 3).
TRAVELER MESSAGES
Traveler data is obtained from the Body Control
Module (BCM) on the CCD bus wires. The CMTC
will not display information for any of the screens forwhich it did not receive the bus messages. The label
corresponding to the missing information will be lit.
If no traveler data is displayed, check the CCD com-
munications and the BCM. If the brightness level is
improper check the CCD bus. One general method
for checking the CCD bus communications between
CMTC and the BCM is refer to the following proce-
dure.
(1) STEP the CMTC to the Elapsed Time (ET).
(2) Press and release the reset button to reset the
module.
(3) If the elapsed time clock does not reset, or fails
to update, check the CCD wires and the BCM. The
DRB is recommended for checking the CCD and the
BCM.
(4) Perform the CMTC self diagnosis before replac-
ing the module.
UNIVERSAL TRANSMITTER
Before proceeding in diagnosis, check the transmit-
ter for battery voltage and a good ground at the
transmitter harness connector.
²The unit may not have been trained correctly,
try retraining the transmitter.
²The batteries in the hand-held transmitter may
be dead.
Fig. 3 Reading/Dome Lamp Diagnosis
NSOVERHEAD CONSOLE 8V - 3
DESCRIPTION AND OPERATION (Continued)

WIRING DIAGRAMS
CONTENTS
page page
AIR CONDITIONING-HEATER.......... 8W-42-1
AIRBAG SYSTEM................... 8W-43-1
ANTI-LOCK BRAKES................. 8W-35-1
AUDIO SYSTEM.................... 8W-47-1
BODY CONTROL MODULE............ 8W-45-1
CHARGING SYSTEM................. 8W-20-1
COMPONENT INDEX................. 8W-02-1
CONNECTOR/GROUND LOCATIONS..... 8W-90-1
CONNECTOR PIN-OUTS.............. 8W-80-1
FRONT LIGHTING................... 8W-50-1
FUEL/IGNITION SYSTEM............. 8W-30-1
GENERAL INFORMATION............. 8W-01-1
GROUND DISTRIBUTION............. 8W-15-1
HORN/CIGAR LIGHTER/POWER OUTLET . 8W-41-1
INSTRUMENT CLUSTER.............. 8W-40-1
INTERIOR LIGHTING................. 8W-44-1
JUNCTION BLOCK................... 8W-12-1
MESSAGE CENTER.................. 8W-46-1OVERHEAD CONSOLE................ 8W-49-1
POWER DISTRIBUTION.............. 8W-10-1
POWER DOOR LOCKS............... 8W-61-1
POWER MIRRORS.................. 8W-62-1
POWER SEAT...................... 8W-63-1
POWER WINDOWS.................. 8W-60-1
REAR LIGHTING.................... 8W-51-1
SPLICE INFORMATION............... 8W-70-1
SPLICE LOCATIONS................. 8W-95-1
STARTING SYSTEM................. 8W-21-1
TRAILER TOW...................... 8W-54-1
TRANSMISSION CONTROL SYSTEM.... 8W-31-1
TURN SIGNALS..................... 8W-52-1
VEHICLE SPEED CONTROL........... 8W-33-1
VEHICLE THEFT SECURITY SYSTEM.... 8W-39-1
WINDOW DEFOGGERS............... 8W-48-1
WIPERS........................... 8W-53-1
NS/GSWIRING DIAGRAMS 8W - 1

(3) Starting at the fuse block, wiggle the wiring
harness about six to eight inches apart and watch
the voltmeter/test lamp.
(4) If the voltmeter registers voltage or the test
lamp glows, there is a short to ground in that gen-
eral area of the wiring harness.
TESTING FOR A SHORT TO GROUND ON
FUSES POWERING SEVERAL LOADS
(1) Refer to the wiring diagrams and disconnect or
isolate all items on the suspected fused circuits.
(2) Replace the blown fuse.
(3) Supply power to the fuse by turning ON the
ignition switch or re-connecting the battery.
(4) Start connecting the items in the fuse circuit
one at a time. When the fuse blows the circuit with
the short to ground has been isolated.
TESTING FOR A VOLTAGE DROP
(1) Connect the positive lead of the voltmeter to
the side of the circuit closest to the battery (Fig. 9).
(2) Connect the other lead of the voltmeter to the
other side of the switch or component.
(3) Operate the item.
(4) The voltmeter will show the difference in volt-
age between the two points.
TROUBLESHOOTING WIRING PROBLEMS
When troubleshooting wiring problems there are
six steps which can aid in the procedure. The steps
are listed and explained below. Always check for non-
factory items added to the vehicle before doing any
diagnosis. If the vehicle is equipped with these items,disconnect them to verify these add-on items are not
the cause of the problem.
(1) Verify the problem.
(2) Verify any related symptoms. Do this by per-
forming operational checks on components that are
in the same circuit. Refer to the wiring diagrams.
(3) Analyze the symptoms. Use the wiring dia-
grams to determine what the circuit is doing, where
the problem most likely is occurring and where the
diagnosis will continue.
(4) Isolate the problem area.
(5) Repair the problem.
(6) Verify proper operation. For this step check for
proper operation of all items on the repaired circuit.
Refer to the wiring diagrams.
SERVICE PROCEDURES
WIRING REPAIR
When replacing or repairing a wire, it is important
that the correct gage be used as shown in the wiring
diagrams. The wires must also be held securely in
place to prevent damage to the insulation.
(1) Disconnect battery negative cable
(2) Remove 1 inch of insulation from each end of
the wire.
(3) Place a piece of heat shrink tubing over one
side of the wire. Make sure the tubing will be long
enough to cover and seal the entire repair area.
(4) Spread the strands of the wire apart on each
part of the exposed wire (example 1). (Fig. 10)
Fig. 8 Testing for ContinuityFig. 9 Testing for Voltage Drop
8W - 01 - 10 8W-01 GENERAL INFORMATIONNS/GS
DIAGNOSIS AND TESTING (Continued)

(5) Push the two ends of wire together until the
strands of wire are close to the insulation (example
2) (Fig. 10)
(6) Twist the wires together (example 3) (Fig. 10)
(7) Solder the connection together using rosin core
type solder only.Do not use acid core solder.
(8) Center the heat shrink tubing over the joint,
and heat using a heat gun. Heat the joint until the
tubing is tightly sealed and sealant comes out of both
ends of the tubing.
(9) Secure the wire to the existing ones to prevent
chafing or damage to the insulation
(10) Connect battery and test all affected systems.
TERMINAL/CONNECTOR REPAIR-MOLEX
CONNECTORS
(1) Disconnect battery.
(2) Disconnect the connector from its mating half/
component.
(3) Insert the terminal releasing special tool 6742
into the terminal end of the connector (Fig. 11).
(4) Using special tool 6742 release the locking fin-
gers on the terminal (Fig. 12).
(5) Pull on the wire to remove it from the connec-
tor.
(6) Repair or replace the connector or terminal, as
necessary.
CONNECTOR REPLACEMENT
(1) Disconnect battery.
(2) Disconnect the connector that is to be repaired
from its mating half/component(3) Remove the connector locking wedge, if
required (Fig. 13)
(4) Position the connector locking finger away from
the terminal using the proper pick from special tool
Fig. 10 Wire Repair
Fig. 11 Molex Connector Repair
Fig. 12 Using Special Tool 6742
Fig. 13 Connector Locking Wedge
NS/GS8W-01 GENERAL INFORMATION 8W - 01 - 11
SERVICE PROCEDURES (Continued)

8W-39 VEHICLE THEFT SECURITY SYSTEM
Component Page
Body Control Module...............8W-39-2, 3, 4
BS19...............................8W-39-2
Clockspring..........................8W-39-2
Driver Door Ajar Switch................8W-39-2
Driver Door Arm/Disarm Switch..........8W-39-3
Driver Door Lock Switch................8W-39-3
Fuse 9 (PDC).........................8W-39-2
Fuse 18 (PDC)........................8W-39-5
Fuse 28 (PDC)........................8W-39-2
G200...............................8W-39-5
G301...........................8W-39-2, 3, 4
G302...............................8W-39-4
G400.............................8W-39-3, 4
High Note Horn.......................8W-39-2
Hood Ajar Switch.....................8W-39-4
Horn Relay..........................8W-39-2
Horn Switch.........................8W-39-2
Junction Block......................8W-39-2, 5Component Page
Left Rear Door Ajar Switch..............8W-39-4
Liftgate Ajar Switch...................8W-39-4
Liftgate Arm/Disarm Switch.............8W-39-3
Low Note Horn.......................8W-39-2
Memory Seat/Mirror Module.............8W-39-2
Message Center.......................8W-39-2
Passenger Door Ajar Switch.............8W-39-2
Passenger Door Arm/Disarm Switch.......8W-39-3
Passenger Door Lock Switch.............8W-39-3
Power Distribution Center.............8W-39-2, 5
PS01...............................8W-39-5
PS02...............................8W-39-5
PTC 1 (JB)..........................8W-39-5
Remote Keyless Entry Module...........8W-39-2
Right Rear Door Ajar Switch.............8W-39-4
Sentry Key Immobilizer Module..........8W-39-5
VTSS Lamp..........................8W-39-2
NS/GS8W - 39 VEHICLE THEFT SECURITY SYSTEM 8W - 39 - 1

8587
3086
RELAY HORN
C248C2
20A
FUSE
9
BATT A0
POWER
DISTRIBUTION
CENTER
13 12
VTSS
LAMP
CENTER MESSAGE
28FUSE10A
C35
JUNCTION
BLOCK
6C4
13C1
C2
169
BODY
CONTROL
MODULE
VTSS
LAMP
DRIVERFUSED
B (+) RELAYHORN
18
CONTROL
M1
20
PKG69
22
BK/OR
M1
20
PK
C116
MODULE MIRROR
SEAT/
MEMORY
M1
20
PK
C24
GY/OR20 X4
79C1 C148
SENSE SWITCHAJAR DRIVER
DOOR DOOR PASSENGER
AJAR
SWITCH
SENSE
DRIVER
DOOR
AJAR
SWITCH
SWITCH AJAR
DOOR PASSENGER
G75
18
TNG74
18
TN/RD
HORN NOTE
LOW HIGH
NOTE
HORN
X2
18
DG/RD
X2
18
DG/RDX2
18
DG/RD
BS19
A A
BB
Z1
18
BK
Z1
18
BK
G301
FUSED
B (+)
1 13
HORN
SWITCH CLOCKSPRING
X3
20
BK/RD
20C2
1X3
20
BK/RD
CONTROLRELAYHORN
*7 *8
* RHD
C2
3
MODULE ENTRY
KEYLESS
REMOTE
7P50
NOT
USED
M1
20
PK
M1
22
PK
(8W-10-30) (8W-10-8)
(8W-10-9)
(8W-10-10)
(8W-46-2) (8W-10-11)
(8W-12-2)
(8W-45-3)
(8W-45-7)(8W-62-3)
(8W-63-4)
(8W-15-10)
(8W-15-11)(8W-41-2) (8W-41-2)(8W-61-5) (8W-12-20)
8W - 39 - 2 8W-39 VEHICLE THEFT SECURITY SYSTEMNS/GS
J988W-3GS003902

BK/LG20 Z2
9
G400
WT/RD20 P98
6J03A
L16
LJ01 B176
WT/RD20 P98
C144SIGNALMUX LIFTGATE
BK/LG20 Z2BK/LG20 Z2Z2
20
BK/LG
2
SWITCH LOCK
DOOR PASSENGER
3
B03 D01P3
Z2
20
BK/LG
55C1
P96
20
WT/LG
4B03
D01P
P96
20
WT/LG
P96
20
WT/LG
BK/LG20 Z2
3D01D
B02
BK/LG20 Z2
G301
WT/DG20 P97
3
DRIVER
DOOR
LOCK
SWITCH
2
WT/DG20 P97
D01D B0211
WT/DG18 P97 DRIVER
BODY
CONTROL
MODULE
C145
DOOR
SWITCH
MUX
SWITCH DISARM
ARM/
LIFTGATE
1 2
2 1
12
2
1
PASSENGER
DOOR
ARM/
DISARM
SWITCH SWITCH DISARM
ARM/
DOOR
DRIVER
1 2
2 1
2 31 UNLOCK
2 LOCK 2 LOCK1 UNLOCK2 LOCK 1 UNLOCK PASSANGER
DOOR
SWITCH
MUX
MUX SWITCHDOOR DRIVER PASSANGER
DOOR
SWITCH
MUX
GROUND
(8W-15-14) (8W-61-6)
(8W-15-10)
(8W-15-11) (8W-61-6)(8W-45-6)
(8W-45-8)
NS/GS8W-39 VEHICLE THEFT SECURITY SYSTEM 8W - 39 - 3
GS003903J988W-3

TN/BK18 G78
BK20Z1
G400
SWITCH AJAR
LIFTGATE
3
1
Z1
18
BK
G301
G70
18
BR/TN
C143SENSE SWITCHAJAR HOOD
L16 J03A4
TN/BK18 G78
4B17
LJ01
SENSE SWITCHAJAR LIFTGATE
59C1
TN/BK18 G78
G302
BK18Z1BK18Z1REAR RIGHT
C177
DOOR
AJAR
SWITCH
SENSE
G76
18
TN/YL
TN/OR18 G77
2
SWITCH AJAR
HOOD
12
RIGHT
REAR
DOOR
AJAR
SWITCH
11
SWITCH AJAR
DOOR
REAR
LEFT
2
SENSE SWITCHAJAR DOOR
47C1
MODULE
CONTROL
BODY
LEFT
REAR
814 1211
(8W-15-14) (8W-15-10) (8W-15-13)(8W-45-7)
(8W-45-8)
8W - 39 - 4 8W-39 VEHICLE THEFT SECURITY SYSTEMNS/GS
J988W-3GS003904