warning DODGE RAM 2003 Service Repair Manual

plastic push-in fasteners that secure the SIACM to
the inside of the B-pillar.
(4) Loosely install the four screws that secure the
SIACM mounting bracket to the base of the B-pillar.
(5) Tighten the four screws that secure the SIACM
mounting bracket to the B-pillar in the following
sequence: upper left, lower right, lower left, upper
right. Tighten the screws to 12 N´m (105 in. lbs.).
(6) Reinstall the front outboard seat belt and
retractor to the inside of the B-pillar. (Refer to 8 -
ELECTRICAL/RESTRAINTS/FRONT OUTBOARD
SEAT BELT & RETRACTOR - INSTALLATION -
STANDARD CAB).
(7) Do not reconnect the battery negative cable at
this time. The supplemental restraint system verifi-
cation test procedure should be performed following
service of any supplemental restraint system compo-
nent. (Refer to 8 - ELECTRICAL/RESTRAINTS -
STANDARD PROCEDURE - VERIFICATION TEST).
INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, DRIVER AIRBAG,
PASSENGER AIRBAG, SEAT BELT TENSIONER,
SIDE CURTAIN AIRBAG, OR INSTRUMENT PANEL
COMPONENT DIAGNOSIS OR SERVICE. DISCON-
NECT AND ISOLATE THE BATTERY NEGATIVE
(GROUND) CABLE, THEN WAIT TWO MINUTES FOR
THE SYSTEM CAPACITOR TO DISCHARGE BEFORE
PERFORMING FURTHER DIAGNOSIS OR SERVICE.
THIS IS THE ONLY SURE WAY TO DISABLE THE
SUPPLEMENTAL RESTRAINT SYSTEM. FAILURE TO
TAKE THE PROPER PRECAUTIONS COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
WARNING: THE SIDE IMPACT AIRBAG CONTROL
MODULE CONTAINS THE IMPACT SENSOR, WHICHENABLES THE SYSTEM TO DEPLOY THE SIDE
CURTAIN AIRBAGS. NEVER STRIKE OR DROP THE
SIDE IMPACT AIRBAG CONTROL MODULE, AS IT
CAN DAMAGE THE IMPACT SENSOR OR AFFECT
ITS CALIBRATION. IF A SIDE IMPACT AIRBAG CON-
TROL MODULE IS ACCIDENTALLY DROPPED DUR-
ING SERVICE, THE MODULE MUST BE SCRAPPED
AND REPLACED WITH A NEW UNIT. FAILURE TO
OBSERVE THIS WARNING COULD RESULT IN ACCI-
DENTAL, INCOMPLETE, OR IMPROPER SIDE CUR-
TAIN AIRBAG DEPLOYMENT AND POSSIBLE
OCCUPANT INJURIES.
(1) Position the Side Impact Airbag Control Mod-
ule (SIACM) and its mounting bracket to the B-pillar
as a unit (Fig. 52).
(2) Reconnect the body wire harness connector for
the SIACM to the module connector receptacle.
(3) Reach through the retractor mounting hole in
the inner B-pillar to position and engage the hook on
the SIACM mounting bracket in the slot of the inner
B-pillar.
(4) Loosely install the four screws that secure the
SIACM mounting bracket to the inner B-pillar.
(5) Tighten the four screws that secure the SIACM
mounting bracket to the B-pillar in the following
sequence: upper left, lower right, lower left, upper
right. Tighten the screws to 12 N´m (105 in. lbs.).
(6) Reinstall the front outboard seat belt and
retractor to the inside of the B-pillar. (Refer to 8 -
ELECTRICAL/RESTRAINTS/FRONT OUTBOARD
SEAT BELT & RETRACTOR - INSTALLATION -
QUAD CAB).
(7) Do not reconnect the battery negative cable at
this time. The supplemental restraint system verifi-
cation test procedure should be performed following
service of any supplemental restraint system compo-
nent. (Refer to 8 - ELECTRICAL/RESTRAINTS -
STANDARD PROCEDURE - VERIFICATION TEST).
DRRESTRAINTS 8O - 57
SIDE IMPACT AIRBAG CONTROL MODULE (Continued)

SPEED CONTROL
TABLE OF CONTENTS
page page
SPEED CONTROL
DESCRIPTION..........................1
OPERATION............................2
DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - VACUUM
SUPPLY TEST.........................2
DIAGNOSIS AND TESTING - ROAD TEST....3
SPECIFICATIONS
TORQUE - SPEED CONTROL.............3
CABLE
DESCRIPTION..........................3
OPERATION............................3
REMOVAL.............................3
INSTALLATION..........................6
SERVO
DESCRIPTION..........................6OPERATION............................7
REMOVAL.............................7
INSTALLATION..........................7
SWITCH
DESCRIPTION..........................8
OPERATION............................8
REMOVAL.............................9
INSTALLATION..........................9
VACUUM RESERVOIR
DESCRIPTION..........................9
OPERATION............................9
DIAGNOSIS AND TESTING - VACUUM
RESERVOIR..........................9
REMOVAL.............................10
INSTALLATION.........................10
SPEED CONTROL
DESCRIPTION
All 3.7L/4.7L/5.9L/8.0LGas Engines and/or Diesel
With Automatic Trans.
The speed control system is operated by the use of
a cable and a vacuum controlled servo. Electronic
control of the speed control system is integrated into
the Powertrain Control Module (PCM). The controls
consist of two steering wheel mounted switches. The
switches are labeled: ON/OFF, RES/ACCEL, SET,
COAST, and CANCEL.
The system is designed to operate at speeds above
30 mph (50 km/h).
WARNING: THE USE OF SPEED CONTROL IS NOT
RECOMMENDED WHEN DRIVING CONDITIONS DO
NOT PERMIT MAINTAINING A CONSTANT SPEED,
SUCH AS IN HEAVY TRAFFIC OR ON ROADS THAT
ARE WINDING, ICY, SNOW COVERED, OR SLIP-
PERY.
5.7L Gas
The speed control system is fully electronically con-
trolled by the Powertrain Control Module (PCM).A
cable and a vacuum controlled servo are not
used. This is a servo-less system.The controls
consist of two steering wheel mounted switches. Theswitches are labeled: ON/OFF, RES/ACCEL, SET,
COAST, and CANCEL.
The system is designed to operate at speeds above
30 mph (50 km/h).
WARNING: THE USE OF SPEED CONTROL IS NOT
RECOMMENDED WHEN DRIVING CONDITIONS DO
NOT PERMIT MAINTAINING A CONSTANT SPEED,
SUCH AS IN HEAVY TRAFFIC OR ON ROADS THAT
ARE WINDING, ICY, SNOW COVERED, OR SLIP-
PERY.
5.9L Diesel With Manual Trans.
The speed control system is fully electronically con-
trolled by the Engine Control Module (ECM).A
cable and a vacuum controlled servo are not
used if the vehicle is equipped with a manual
transmission and a diesel engine. This is a ser-
vo-less system.The controls consist of two steering
wheel mounted switches. The switches are labeled:
ON/OFF, RES/ACCEL, SET, COAST, and CANCEL.
The system is designed to operate at speeds above
30 mph (50 km/h).
WARNING: THE USE OF SPEED CONTROL IS NOT
RECOMMENDED WHEN DRIVING CONDITIONS DO
NOT PERMIT MAINTAINING A CONSTANT SPEED,
SUCH AS IN HEAVY TRAFFIC OR ON ROADS THAT
ARE WINDING, ICY, SNOW COVERED, OR SLIP-
PERY.
DRSPEED CONTROL 8P - 1

placed in its ªCustomer Learnº programming mode.
See Sentry Key Immobilizer System Transponder
Programming in this section for more information on
the ªCustomer Learnº programming mode.
For diagnosis or initialization of the SKIM and the
PCM, a DRBIIItscan tool and the proper Powertrain
Diagnostic Procedures manual are required. The
SKIM cannot be repaired and, if faulty or damaged,
the unit must be replaced.
DIAGNOSIS AND TESTING
VEHICLE THEFT SECURITY SYSTEM
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, REFER TO RESTRAINT SYSTEMS BEFORE
ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, OR INSTRUMENT PANEL COMPONENT
DIAGNOSIS OR SERVICE. FAILURE TO TAKE THE
PROPER PRECAUTIONS COULD RESULT IN ACCI-
DENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
NOTE: The most reliable, efficient, and accurate
means to diagnose the Vehicle Theft Security Sys-
tem (VTSS) and Sentry Key Immobilizer System
(SKIS) involves the use of a DRBlllTscan tool and
the proper Powertrain Diagnostic Procedures man-
ual.
The Vehicle Theft Security System (VTSS), Sentry
Key Immobilizer System (SKIS) and the Programma-
ble Communication Interface (PCI) bus network
should be diagnosed using a DRBIIItscan tool. The
DRBIIItwill allow confirmation that the PCI bus is
functional, that the Sentry Key Immobilizer Module
(SKIM) is placing the proper messages on the PCI
bus, and that the Powertrain Control Module (PCM)
and the Instrument Cluster are receiving the PCI
bus messages. Refer to the proper Powertrain or
Body Diagnostic Procedures manual.
Visually inspect the related wiring harness connec-
tors. Look for broken, bent, pushed out or corroded
terminals. If any of the conditions are present, repair
as necessary. Refer to Wiring Diagrams for complete
circuit descriptions and diagrams. Refer to (Refer to
8 - ELECTRICAL/ELECTRONIC CONTROL MOD-
ULES/SENTRY KEY IMMOBILIZER MODULE -
REMOVAL) for SKIM replacement.
STANDARD PROCEDURE
CONFIGURING A NEW MODULE / SWITCH
OPERATING MODES
To configure a new module or to switch operating
modes, a DRBIIItscan tool must be used.
(1) Hook up the DRBIIItscan tool to the Data
Link Connector (DLC).
(2) With the key in the ignition, turn the key to
the RUN position.
(3) After the DRBIIItscan tool initialization, per-
form the following:
(a) Select ªTheft Alarm.º
(b) Select ªVTSS.º
(c) Select ªMiscellaneous.º
(4) Once in the ªMiscellaneousº screen:
(a) If you wish to configure a new module, select
ªConfigure Module.º
(b) If you wish to put the module into customer
usage mode, select ªEnable VTSS.º
(c) If you wish to put the module into dealer lot
mode, select ªDealer Lot.º
SENTRY KEY IMMOBILIZER SYSTEM
INITIALIZATION
The Sentry Key Immobilizer System (SKIS) initial-
ization should be performed following a Sentry Key
Immobilizer Module (SKIM) replacement.
It can be summarized by the following:
(1) Obtain the vehicles unique PIN number
assigned to it's original SKIM from the vehicle
owner, the vehicle's invoice or from Chrysler's Cus-
tomer Center.
(2) With the DRBIIItscan tool, select ªTheft
Alarm,º ªSKIM,º Miscellaneous.º Select ªSKIM Mod-
ule Replacedº function and the DRBIIItwill prompt
you through the following steps.
(3) Enter secured access mode using the unique
four digit PIN number.
(4) Program the vehicle's VIN number into the
SKIM's memory.
(5) Program the country code into the SKIM's
memory (U.S.).
(6) Transfer the vehicle's unique Secret Key data
from the PCM. This process will require the SKIM to
be insecured access mode. The PIN number must
be entered into the DRBIIItbefore the SKIM will
entersecured access mode. Oncesecured access
modeis active, the SKIM will remain in that mode
for 60 seconds.
(7) Program all customer keys into the SKIM's
memory. This required that the SKIM be insecured
access modeThe SKIM will immediately exit
secured access modeafter each key is pro-
grammed.
DRVEHICLE THEFT SECURITY 8Q - 3
VEHICLE THEFT SECURITY (Continued)

If the control knob is held depressed for more than
about thirty seconds, the FCM will suspend washer
pump/motor operation until the knob is released for
about two seconds, then cycled back to the Wash
position; however, the wipers will continue to operate
for as long as the Wash switch is held closed. The
FCM monitors the changing state of the wiper motor
park switch through a hard wired wiper park switch
sense circuit input. This input allows the FCM to
count the number of wipe cycles that occur after the
Wash switch is released, and to determine the proper
interval at which to de-energize the wiper on/off
relay to complete the wipe-after-wash mode cycle.
DIAGNOSIS AND TESTING - WIPER &
WASHER SYSTEM
If the wiper motor operates, but the wipers do not
move on the windshield, replace the faulty wiper
module. If the washer pump/motor operates, but no
washer fluid is dispensed on the glass; or, if the wip-
ers operate, but chatter, lift, or do not clear the glass,
clean and inspect the wiper and washer system com-
ponents as required. (Refer to 8 - ELECTRICAL/
WIPERS/WASHERS - CLEANING) and (Refer to 8 -
ELECTRICAL/WIPERS/WASHERS - INSPECTION).
For diagnosis and testing of the multi-function
switch (Refer to 8 - ELECTRICAL/LAMPS/LIGHT-
ING - EXTERIOR/MULTI-FUNCTION SWITCH -
DIAGNOSIS AND TESTING). Refer to the appropri-
ate wiring information. The wiring information
includes wiring diagrams, proper wire and connector
repair procedures, details of wire harness routing
and retention, connector pin-out information and
location views for the various wire harness connec-
tors, splices and grounds.
The hard wired circuits and components of the
wiper and washer system may be diagnosed and
tested using conventional diagnostic tools and proce-
dures. However, conventional diagnostic methods
may not prove conclusive in the diagnosis of the
instrument cluster, the Front Control Module (FCM),
or the electronic message inputs to or outputs from
the instrument cluster and the FCM that control the
various wiper and washer system operating modes.
The most reliable, efficient, and accurate means to
diagnose the instrument cluster, the FCM, or the
electronic message inputs and outputs related to the
various wiper and washer system operating modes
requires the use of a DRBIIItscan tool. Refer to the
appropriate diagnostic information.
WARNING: ON VEHICLES EQUIPPED WITH AIR-
BAGS, DISABLE THE SUPPLEMENTAL RESTRAINT
SYSTEM BEFORE ATTEMPTING ANY STEERING
WHEEL, STEERING COLUMN, DRIVER AIRBAG,
PASSENGER AIRBAG, SEAT BELT TENSIONER,SIDE CURTAIN AIRBAG, OR INSTRUMENT PANEL
COMPONENT DIAGNOSIS OR SERVICE. DISCON-
NECT AND ISOLATE THE BATTERY NEGATIVE
(GROUND) CABLE, THEN WAIT TWO MINUTES FOR
THE SYSTEM CAPACITOR TO DISCHARGE BEFORE
PERFORMING FURTHER DIAGNOSIS OR SERVICE.
THIS IS THE ONLY SURE WAY TO DISABLE THE
SUPPLEMENTAL RESTRAINT SYSTEM. FAILURE TO
TAKE THE PROPER PRECAUTIONS COULD
RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT
AND POSSIBLE PERSONAL INJURY.
CLEANING - WIPER & WASHER SYSTEM
WIPER SYSTEM
The squeegees of wiper blades exposed to the ele-
ments for a long time tend to lose their wiping effec-
tiveness. Periodic cleaning of the squeegees is
suggested to remove any deposits of salt or road film.
The wiper blades, arms, and windshield glass should
only be cleaned using a sponge or soft cloth and
windshield washer fluid, a mild detergent, or a non-
abrasive cleaner. If the wiper blades continue to
leave streaks, smears, hazing, or beading on the
glass after thorough cleaning of the squeegees and
the glass, the entire wiper blade assembly must be
replaced.
CAUTION: Protect the rubber squeegees of the
wiper blades from any petroleum-based cleaners,
solvents, or contaminants. These products can rap-
idly deteriorate the rubber squeegees.
WASHER SYSTEM
If the washer system is contaminated with foreign
material, drain the washer reservoir by removing the
washer pump/motor from the reservoir. Clean foreign
material from the inside of the washer pump/motor
inlet filter screen and the washer reservoir using
clean washer fluid, a mild detergent, or a non-abra-
sive cleaner. Flush foreign material from the washer
system plumbing by first disconnecting the washer
hoses from the washer nozzles, then running the
washer pump/motor to run clean washer fluid or
water through the system. Plugged or restricted
washer nozzles should be carefully back-flushed
using compressed air. If the washer nozzle obstruc-
tion cannot be cleared, replace the washer nozzle.
CAUTION: Never introduce petroleum-based clean-
ers, solvents, or contaminants into the washer sys-
tem. These products can rapidly deteriorate the
rubber seals and hoses of the washer system, as
well as the rubber squeegees of the wiper blades.
8R - 6 WIPERS/WASHERSDR
WIPERS/WASHERS (Continued)

The washer fluid level switch is connected to the
vehicle electrical system through a dedicated take
out and connector of the right (except V-10 and diesel
engines) or left (V-10 and diesel engines only) head-
lamp and dash wire harness. The switch is connected
in series between a clean ground output of the Front
Control Module (FCM) on a sensor return circuit and
the washer fluid switch sense input to the FCM.
When the switch closes, the FMC senses the ground
on the washer fluid switch sense circuit. The FMC is
programmed to respond to this input by sending an
electronic washer fluid indicator lamp-on message to
the instrument cluster over the Programmable Com-
munications Interface (PCI) data bus. The instru-
ment cluster responds to this message by
illuminating the washer fluid indicator and by sound-
ing an audible chime tone warning.
The washer fluid level switch may be diagnosed
and tested using conventional diagnostic tools and
procedures. However, conventional diagnostic meth-
ods may not prove conclusive in the diagnosis of the
instrument cluster, the Front Control Module (FCM),
or the electronic message inputs to or outputs from
the instrument cluster and the FCM that control the
operation of the washer fluid visual and/or audible
indicators. The most reliable, efficient, and accurate
means to diagnose the washer fluid level indicator,
the instrument cluster, the FCM, or the electronic
message inputs and outputs related to the washer
fluid indicator requires the use of a DRBIIItscan
tool. Refer to the appropriate diagnostic information.
REMOVAL
The washer fluid level switch can be removed from
the washer reservoir without removing the reservoir
from the vehicle.
(1) Unlatch and open the hood.
(2) Disconnect and isolate the battery negative
cable.
(3) Disconnect the washer hose from the barbed
outlet nipple of the washer pump/motor unit and
allow the washer fluid to drain into a clean container
for reuse.
(4) Disconnect the right (except V-10 and diesel
engine) or left (V-10 and diesel engine only) head-
lamp and dash wire harness connector for the washer
fluid level switch from the switch connector recepta-
cle (Fig. 7) or (Fig. 8).
NOTE: The pivoting float of the washer fluid level
switch must be in a horizontal position within the
reservoir in order to be removed. With the reservoir
empty and in an upright position, the pivoting float
will orient itself to the horizontal position when the
switch connector receptacle is pointed straight
upwards.(5) Using a trim stick or another suitable wide
flat-bladed tool, gently pry the barbed nipple of the
washer fluid level switch out of the rubber grommet
seal on the reservoir sump. Care must be taken not
to damage the reservoir.
Fig. 7 Washer Fluid Level Switch Remove/Install -
Except V-10 & Diesel Engine
1 - WASHER HOSE
2 - WASHER RESERVOIR
3 - WASHER FLUID LEVEL SWITCH
4 - WIRE HARNESS
5 - WASHER PUMP/MOTOR
Fig. 8 Washer Fluid Level Switch Remove/Install -
V-10 & Diesel Engine
1 - WIRE HARNESS
2 - WASHER RESERVOIR
3 - WASHER PUMP/MOTOR
4 - WASHER HOSE
5 - WASHER FLUID LEVEL SWITCH
8R - 10 WIPERS/WASHERSDR
WASHER FLUID LEVEL SWITCH (Continued)

WASHER RESERVOIR
DESCRIPTION
Except on models equipped with an optional V-10
or diesel engine, the molded plastic washer fluid res-
ervoir is mounted on the right rearward facing sur-
face of the cooling module radiator shroud in the
engine compartment (Fig. 14). On models with the
V-10 or diesel engine, the molded plastic washer fluid
reservoir is mounted on the rearward facing surface
of the left vertical member of the radiator support in
the engine compartment. The reservoir is a molded
unit constructed of a translucent plastic that allows
the washer fluid level to be inspected without remov-
ing the washer reservoir cap. The most visible com-
ponent of the washer reservoir is the filler cap unit,
which is secured to and hinges on a hook feature
that is integral to the filler neck near the top of the
reservoir. The bright yellow plastic filler cap snaps
over the filler neck opening and seals the reservoiropening with an integral rubber gasket. The filler
cap is labeled with an International Control and Dis-
play Symbol icon for ªWindshield Washerº and the
text ªWasher Fluid Onlyº that are molded into it and
highlighted in black against the yellow plastic cap for
visibility.
There are dedicated holes near the bottom of the
rearward facing side of the reservoir provided for the
mounting of the washer pump/motor unit and the
washer fluid level switch. A snap post receptacle
molded into the reservoir allows for mounting of the
washer pump without the use of fasteners. The res-
ervoir also features an integral hose routing trough
on its rearward facing side. Except on models with a
V-10 or diesel engine, the washer reservoir is secured
to the cooling module radiator shroud with three
integral tabs, two at the bottom and one at the top.
The two bottom tabs are inserted into two slots near
the bottom of the shroud, while the upper tab slides
into an integral channel-like slot near the top of the
shroud. A molded lock feature on the forward facing
surface of the reservoir engages a molded depression
on the rearward facing surface of the radiator shroud
when the reservoir is fully seated on the shroud,
locking the unit securely in place. On models with a
V-10 or diesel engine, the washer reservoir is secured
with two screws through integral mounting tabs to
the left vertical member of the radiator support. On
many models, a molded plastic coolant recovery con-
tainer or a coolant pressure container must be
detached from the top of the cooling module and
moved aside to access the washer fluid reservoir for
service. This may be accomplished without opening
or draining the engine cooling system.
OPERATION
The washer fluid reservoir provides a secure,
on-vehicle storage location for a large reserve of
washer fluid for operation of the washer system. The
washer reservoir filler neck provides a clearly
marked and readily accessible point from which to
add washer fluid to the reservoir. The washer/pump
motor unit is located in a sump area near the bottom
of the reservoir to be certain that washer fluid will
be available to the pump as the fluid level in the res-
ervoir becomes depleted. The washer pump/motor
unit is mounted in the lowest position in the sump.
The washer fluid level switch is mounted just above
the sump area of the reservoir so that there will be
adequate warning to the vehicle operator that the
washer fluid level is low, well before the washer sys-
tem will no longer operate.
Fig. 14 Washer Reservoir - except V-10 & Diesel
Engine
1-TOPTAB
2 - HOOK FEATURE
3 - CAP
4 - RESERVOIR
5 - TROUGH
6 - HOSE
7 - LOCK FEATURE
8 - WASHER FLUID LEVEL SWITCH
9 - WASHER PUMP/MOTOR
10 - BOTTOM TAB (2)
DRWIPERS/WASHERS 8R - 15

8W-01 WIRING DIAGRAM INFORMATION
TABLE OF CONTENTS
page page
WIRING DIAGRAM INFORMATION
DESCRIPTION
DESCRIPTION - HOW TO USE WIRING
DIAGRAMS...........................1
DESCRIPTION - CIRCUIT INFORMATION....5
DESCRIPTION - CIRCUIT FUNCTIONS......6
DESCRIPTION - SECTION IDENTIFICATION
AND INFORMATION....................6
DESCRIPTION - CONNECTOR, GROUND
AND SPLICE INFORMATION..............7
WARNING
WARNINGS - GENERAL.................7
DIAGNOSIS AND TESTING - WIRING
HARNESS............................7
STANDARD PROCEDURE
STANDARD PROCEDURE -
ELECTROSTATIC DISCHARGE (ESD)
SENSITIVE DEVICES...................8
STANDARD PROCEDURE - TESTING OF
VOLTAGE POTENTIAL...................9
STANDARD PROCEDURE - TESTING FOR
CONTINUITY..........................9STANDARD PROCEDURE - TESTING FOR A
SHORT TO GROUND...................9
STANDARD PROCEDURE - TESTING FOR A
SHORT TO GROUND ON FUSES
POWERING SEVERAL LOADS...........10
STANDARD PROCEDURE - TESTING FOR A
VOLTAGE DROP......................10
SPECIAL TOOLS
WIRING/TERMINAL....................10
CONNECTOR
REMOVAL.............................11
INSTALLATION.........................11
DIODE
REMOVAL.............................14
INSTALLATION.........................14
TERMINAL
REMOVAL.............................14
INSTALLATION.........................14
WIRE
STANDARD PROCEDURE - WIRE SPLICING . . 15
WIRING DIAGRAM
INFORMATION
DESCRIPTION
DESCRIPTION - HOW TO USE WIRING
DIAGRAMS
DaimlerChrysler Corporation wiring diagrams are
designed to provide information regarding the vehi-
cles wiring content. In order to effectively use the
wiring diagrams to diagnose and repair
DaimlerChrysler Corporation vehicles, it is important
to understand all of their features and characteris-
tics.
Diagrams are arranged such that the power (B+)
side of the circuit is placed near the top of the page,
and the ground (B-) side of the circuit is placed near
the bottom of the page (Fig. 1).
All switches, components, and modules are shown
in the at rest position with the doors closed and the
key removed from the ignition (Fig. 2).Components are shown two ways. A solid line
around a component indicates that the component is
complete. A dashed line around the component indi-
cates that the component is being shown is not com-
plete. Incomplete components have a reference
number to indicate the page where the component is
shown complete.
It is important to realize that no attempt is made
on the diagrams to represent components and wiring
as they appear on the vehicle. For example, a short
piece of wire is treated the same as a long one. In
addition, switches and other components are shown
as simply as possible, with regard to function only.
SYMBOLS
International symbols are used throughout the wir-
ing diagrams. These symbols are consistent with
those being used around the world (Fig. 3).
DR8W-01 WIRING DIAGRAM INFORMATION 8W - 01 - 1

DESCRIPTION - CONNECTOR, GROUND AND
SPLICE INFORMATION
CAUTION: Not all connectors are serviced. Some
connectors are serviced only with a harness. A typ-
ical example might be the Supplemental Restraint
System connectors. Always check parts availability
before attempting a repair.
IDENTIFICATION
In-line connectors are identified by a number, as
follows:
²In-line connectors located in the engine compart-
ment are C100 series numbers
²In-line connectors located in the Instrument
Panel area are C200 series numbers.
²In-line connectors located in the body are C300
series numbers.
²Jumper harness connectors are C400 series
numbers.
²Grounds and ground connectors are identified
with a ªGº and follow the same series numbering as
the in-line connectors.
²Splices are identified with an ªSº and follow the
same series numbering as the in-line connectors.
²Component connectors are identified by the com-
ponent name instead of a number. Multiple connec-
tors on a component use a C1, C2, etc. identifier.
LOCATIONS
Section 8W-91 contains connector/ground/splice
location illustrations. The illustrations contain the
connector name (or number)/ground number/splice
number and component identification. Connector/
ground/splice location charts in section 8W-91 refer-
ence the figure numbers of the illustrations.
The abbreviation T/O is used in the component
location section to indicate a point in which the wir-
ing harness branches out to a component. The abbre-
viation N/S means Not Shown in the illustrations
WARNING
WARNINGS - GENERAL
WARNINGSprovide information to prevent per-
sonal injury and vehicle damage. Below is a list of
general warnings that should be followed any time a
vehicle is being serviced.
WARNING: ALWAYS WEAR SAFETY GLASSES FOR
EYE PROTECTION.
WARNING: USE SAFETY STANDS ANYTIME A PRO-
CEDURE REQUIRES BEING UNDER A VEHICLE.WARNING: BE SURE THAT THE IGNITION SWITCH
ALWAYS IS IN THE OFF POSITION, UNLESS THE
PROCEDURE REQUIRES IT TO BE ON.
WARNING: SET THE PARKING BRAKE WHEN
WORKING ON ANY VEHICLE. AN AUTOMATIC
TRANSMISSION SHOULD BE IN PARK. A MANUAL
TRANSMISSION SHOULD BE IN NEUTRAL.
WARNING: OPERATE THE ENGINE ONLY IN A
WELL-VENTILATED AREA.
WARNING: KEEP AWAY FROM MOVING PARTS
WHEN THE ENGINE IS RUNNING, ESPECIALLY THE
FAN AND BELTS.
WARNING: TO PREVENT SERIOUS BURNS, AVOID
CONTACT WITH HOT PARTS SUCH AS THE RADIA-
TOR, EXHAUST MANIFOLD(S), TAIL PIPE, CATA-
LYTIC CONVERTER AND MUFFLER.
WARNING: DO NOT ALLOW FLAME OR SPARKS
NEAR THE BATTERY. GASES ARE ALWAYS
PRESENT IN AND AROUND THE BATTERY.
WARNING: ALWAYS REMOVE RINGS, WATCHES,
LOOSE HANGING JEWELRY AND AVOID LOOSE
CLOTHING.
DIAGNOSIS AND TESTING - WIRING HARNESS
TROUBLESHOOTING TOOLS
When diagnosing a problem in an electrical circuit
there are several common tools necessary. These tools
are listed and explained below.
²Jumper Wire - This is a test wire used to con-
nect two points of a circuit. It can be used to bypass
an open in a circuit.
WARNING: NEVER USE A JUMPER WIRE ACROSS
A LOAD, SUCH AS A MOTOR, CONNECTED
BETWEEN A BATTERY FEED AND GROUND.
²Voltmeter - Used to check for voltage on a cir-
cuit. Always connect the black lead to a known good
ground and the red lead to the positive side of the
circuit.
CAUTION: Most of the electrical components used
in today's vehicles are Solid State. When checking
voltages in these circuits, use a meter with a 10 -
megohm or greater impedance rating.
DR8W-01 WIRING DIAGRAM INFORMATION 8W - 01 - 7
WIRING DIAGRAM INFORMATION (Continued)

Component Page
Overdrive Switch...................... 8W-31
Overhead Map/Reading Lamp............ 8W-44
Oxygen Sensors....................... 8W-30
Oxygen Sensor Downstream Relay........ 8W-30
Park Brake Switch.................... 8W-40
Park Lamp Relay................... 8W-50, 52
Park/Turn Signal Lamps............. 8W-50, 52
Passenger Airbag On/Off Switch.......... 8W-43
Blend Door Actuators.................. 8W-42
Passenger Lumbar Switch............... 8W-63
Power Mirrors........................ 8W-62
Power Outlet......................... 8W-41
Power Outlet-Console.................. 8W-41
Power Seat Motors.................... 8W-63
Power Seat Switches................... 8W-63
Power Steering Pressure Switch.......... 8W-30
Power Window Circuit Breaker........... 8W-10
Power Window Motors.................. 8W-60
Power Window Switches................ 8W-60
Powertrain Control Module.............. 8W-30
PTCs............................... 8W-10
PTO Switch.......................... 8W-30
Radio............................... 8W-47
Recirculation Door Actuator............. 8W-42
Red Brake Warning Indicator Switch . . . 8W-34, 35
Remote Radio Switches................. 8W-47
Splices.............................. 8W-70
Seat Belt Pretensioners................. 8W-43
Seat Belt Switch-Driver................ 8W-40
Seat Belt Tensioner Reducer............. 8W-40
Seat Heater Interface Module............ 8W-63
Sentry Key Immobilizer Module.......... 8W-39
Spare Relay.......................... 8W-10
Speakers............................ 8W-47Component Page
Speed Control Servo................... 8W-33
Speed Control Switches................. 8W-33
Starter Motor Relay................... 8W-21
Starter Motor.................... 8W-21, 21-3
Tail/Stop Lamps...................... 8W-52
Tail/Stop/Turn Signal Lamps.......... 8W-51, 52
Tail/Turn Lamps...................... 8W-52
Tailgate Lamp Assembly................ 8W-51
Throttle Position Sensor................ 8W-30
Throttle Position Switch................ 8W-30
Trailer Tow Connector.................. 8W-54
Trailer Tow Connector-Add On........... 8W-54
Trailer Tow Left Turn Relay............. 8W-54
Trailer Tow Right Turn Relay............ 8W-54
Transfer Case Control Module............ 8W-31
Transfer Case Mode Sensor.............. 8W-31
Transfer Case Selector Switch............ 8W-31
Transfer Case Shift Motor............... 8W-31
Transmission Control Module............ 8W-31
Transmission Control Relay............. 8W-31
Transmission Range Sensor.............. 8W-31
Transmission Solenoid Assembly.......... 8W-31
Transmission Solenoid/TRS Assembly...... 8W-31
Underhood Lamp...................... 8W-44
Vacuum Pump........................ 8W-30
Vehicle Speed Sensor................... 8W-30
Vistronic Fan Drive.................... 8W-30
Washer Fluid Level Switch.............. 8W-53
Washer Pump Motor-Front.............. 8W-53
Water In Fuel Sensor.................. 8W-30
Wheel Speed Sensors................... 8W-35
Wiper High/Low Relay................. 8W-53
Wiper Motor-Front.................... 8W-53
8W - 02 - 2 8W-02 COMPONENT INDEXDR

8W-15 GROUND DISTRIBUTION
Component Page
A/C Compressor Clutch..................8W-15-9, 11
A/C-Heater Control....................8W-15-15, 17
Adjustable Pedal Switch...................8W-15-17
Airbag Control Module....................8W-15-18
Airbag Control Module-Left Side Impact.........8W-15-18
Airbag Control Module-Right Side Impact........8W-15-18
Amplifier Audio........................8W-15-14
Automatic Day/Night Mirror................8W-15-15
Auxiliary Battery........................8W-15-7
Battery..............................8W-15-7
Brake Lamp Switch......................8W-15-13
Brake Transmission Shift Interlock Solenoid.......8W-15-14
Center High Mounted Stop Lamp/Cargo Lamp.....8W-15-15
Cigar Lighter Outlet.....................8W-15-17
Clearance Lamp No. 1....................8W-15-16
Clearance Lamp No. 2....................8W-15-16
Clearance Lamp No. 3....................8W-15-16
Clearance Lamp No. 4....................8W-15-16
Clearance Lamp No. 5....................8W-15-16
Clockspring...........................8W-15-12
Clutch Interlock Brake Switch..............8W-15-2, 5
Compass/Mini-Trip Computer................8W-15-15
Condenser Fan........................8W-15-4, 6
Controller Antilock Brake...................8W-15-4
Cylinder Lock Switch-Driver................8W-15-19
Cylinder Lock Switch-Passenger..............8W-15-19
Data Link Connector.....................8W-15-13
Data Link Connector-Engine................8W-15-11
Door Ajar Switch-Driver...................8W-15-19
Door Ajar Switch-Left Rear.................8W-15-20
Door Ajar Switch-Passenger.................8W-15-19
Door Ajar Switch-Right Rear................8W-15-20
Door Lock Motor/Ajar Switch-Driver............8W-15-19
Door Lock Motor/Ajar Switch-Left Rear..........8W-15-20
Door Lock Motor/Ajar Switch-Passenger.........8W-15-19
Door Lock Motor/Ajar Switch-Right Rear.........8W-15-20
Door Lock Switch-Passenger.................8W-15-19
Driver Door Module......................8W-15-21
Electric Brake Provision..................8W-15-4, 6
Engine Control Module....................8W-15-11
Fender Lamp-Front Left....................8W-15-3
Fender Lamp-Front Right...................8W-15-3
Fender Lamp-Rear Left....................8W-15-3
Fender Lamp-Rear Right...................8W-15-3
Fog Lamp-Left........................8W-15-2, 5
Fog Lamp-Right.......................8W-15-2, 5
Fuel Heater...........................8W-15-11
Fuel Pump Module....................8W-15-3, 4, 6
G100................................8W-15-7
G101................................8W-15-7
G102................................8W-15-7
G103................................8W-15-2
G104..............................8W-15-5, 6
G105................................8W-15-7
G106................................8W-15-4
G107............................8W-15-8, 9, 10
G108................................8W-15-7
G109................................8W-15-7
G114 ...............................8W-15-11
G117 ...............................8W-15-11
Component Page
G120...............................8W-15-11
G201.............................8W-15-12, 13
G202.............................8W-15-14, 15
G203...............................8W-15-17
G204...............................8W-15-18
G301...............................8W-15-20
G302...............................8W-15-22
Generator..........................8W-15-10, 11
Headlamp Switch.......................8W-15-12
Headlamp-Left........................8W-15-2, 5
Headlamp-Right.........................8W-15-7
Heated Seat Cushion-Driver.................8W-15-22
Heated Seat Cushion-Passenger..............8W-15-22
Heated Seat Switch-Driver.................8W-15-13
Heated Seat Switch-Passenger...............8W-15-13
Horn-High Note.......................8W-15-4, 6
Horn-Low Note........................8W-15-4, 6
Ignition Switch.........................8W-15-12
Instrument Cluster....................8W-15-12, 14
Intake Air Heater Relay No. 1................8W-15-7
Intake Air Heater Relay No. 2................8W-15-7
Integrated Power Module..............8W-15-2, 4, 5, 8
Leak Detection Pump.....................8W-15-10
License Lamp-Left.......................8W-15-3
License Lamp-Right......................8W-15-3
Lift Pump Motor........................8W-15-11
Overdrive Switch.......................8W-15-13
Oxygen Sensor 1/1 Upstream................8W-15-10
Oxygen Sensor 1/2 Downstream.............8W-15-9, 10
Oxygen Sensor 2/1 Upstream................8W-15-10
Oxygen Sensor 2/2 Downstream.............8W-15-9, 10
Park/Turn Signal Lamp-Left Front............8W-15-2, 6
Park/Turn Signal Lamp-Right Front............8W-15-7
Power Mirror-Left.......................8W-15-21
Power Mirror-Right......................8W-15-22
Power Outlet..........................8W-15-17
Power Outlet-Console.....................8W-15-21
Power Seat Switch-Driver..................8W-15-21
Power Seat Switch-Passenger................8W-15-21
Power Steering Pressure Switch...............8W-15-9
Powertrain Control Module.............8W-15-8, 10, 11
Radio...............................8W-15-15
Red Brake Warning Indicator Switch..........8W-15-2, 6
Seat Belt Switch-Driver...................8W-15-20
Seat Heater Interface Module................8W-15-22
Sentry Key Immobilizer Module..............8W-15-12
Speed Control Servo.....................8W-15-2, 5
Tail/Stop/Turn Signal Lamp-Left...............8W-15-3
Tail/Stop/Turn Signal Lamp-Right..............8W-15-3
Tailgate Lamp Assembly....................8W-15-3
Trailer Tow Connector..................8W-15-3, 4, 6
Trailer Tow Connector-Add On.............8W-15-3, 4, 6
Transfer Case Control Module...............8W-15-17
Transfer Case Selector Switch................8W-15-13
Transmission Control Module.................8W-15-8
Underhood Lamp.......................8W-15-2, 6
Vacuum Pump..........................8W-15-7
Washer Pump Motor-Front.................8W-15-4, 7
Wiper Motor-Front....................8W-15-2, 4, 5
DR8W-15 GROUND DISTRIBUTION 8W - 15 - 1