
CIRCUIT INFORMATION
Each wire shown in the diagrams contains a code
which identifies the main circuit, part of the main
circuit, gage of wire, and color (Fig. 1).
CIRCUIT FUNCTIONS
All circuits in the diagrams use an alpha/numeric
code to identify the wire and its function. To identify
which circuit code applies to a system, refer to the
Circuit Identification Code Chart. This chart shows
the main circuits only and does not show the second-
ary codes that may apply to some models.
Fig. 1 Wire Code Identification
1 ± COLOR OF WIRE (LIGHT BLUE WITH YELLOW TRACER)
2 ± GAUGE OF WIRE (18 GAUGE)
3 ± PART OF MAIN CIRCUIT (VARIES DEPENDING ON
EQUIPMENT)
4 ± MAIN CIRCUIT IDENTIFICATION
WIRE COLOR CODE CHART
COLOR CODE COLORSTANDARD
TRACER
COLOR
BL BLUE WT
BK BLACK WT
BR BROWN WT
DB DARK BLUE WT
DG DARK GREEN WT
GY GRAY BK
LB LIGHT BLUE BK
LG LIGHT GREEN BK
OR ORANGE BK
PK PINK BK or WT
RD RED WT
TN TAN WT
VT VIOLET WT
WT WHITE BK
YL YELLOW BK
* WITH TRACER
CIRCUIT IDENTIFICATION CODE CHART
CIRCUIT FUNCTION
A BATTERY FEED
B BRAKE CONTROLS
C CLIMATE CONTROLS
D DIAGNOSTIC CIRCUITS
E DIMMING ILLUMINATION CIRCUITS
F FUSED CIRCUITS
G MONITORING CIRCUITS (GAUGES)
H OPEN
I NOT USED
J OPEN
K POWERTRAIN CONTROL MODULE
L EXTERIOR LIGHTING
M INTERIOR LIGHTING
N NOT USED
O NOT USED
P POWER OPTION (BATTERY FEED)
Q POWER OPTIONS (IGNITION FEED)
R PASSIVE RESTRAINT
S SUSPENSION/STEERING
T TRANSMISSION/TRANSAXLE/
TRANSFER CASE
U OPEN
V SPEED CONTROL, WIPER/WASHER
W OPEN
X AUDIO SYSTEMS
Y OPEN
Z GROUNDS
8W - 01 - 4 8W - 01 GENERAL INFORMATIONPL
DESCRIPTION AND OPERATION (Continued)

TERMINOLOGY
This a list of terms with there definitions used in
the wiring diagrams.
Built-Up-Export....... Vehicles Built For Sale In
Markets Other Than North America
Except-Built-Up-Export . Vehicles Built For Sale In
North America
LHD ................Left Hand Drive Vehicles
RHD ...............Right Hand Drive Vehicles
ATX . . Automatic Transmission-Front Wheel Drive
MTX ....Manual Transmission-Front Wheel Drive
AT ....Automatic Transmission-Rear Wheel Drive
MT......Manual Transmission-Rear Wheel Drive
SOHC...........Single Over Head Cam Engine
DOHC............Dual Over Head Cam Engine
CONNECTOR 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 on theengine com-
partment harnessareC100series numbers.
²Connectors located on theinstrument panel
harnessareC200series numbers.
²Connectors located on thebody harnessare
C300series numbers.
²Jumper harness connectorsareC400series
numbers.
²Grounds and ground connectorsare identi-
fied with aªGºand follow the same series number-
ing as the in-line connector.
Component connectors are identified by the compo-
nent name instead of a number. Multiple connectors
on a component use a C1, C2, etc. identifier.
LOCATIONS
Section 8W-90 contains connector/ground location
illustrations. The illustrations contain the connector
name (or number)/ground number and component
identification. Connector/ground location charts in
Section 8W-90 reference the illustration number for
components and connectors.
Section 8W-80 shows each connector and the cir-
cuits involved with that connector. The connectors
are identified using the name/number on the Dia-
gram pages.
SPLICE LOCATIONS
Splice Location charts in Section 8W-70 show the
entire splice, and provide references to other sections
the splice serves.
Section 8W-95 contains illustrations that show the
general location of the splices in each harness. The
illustrations show the splice by number, and provide
a written location.
NOTES, CAUTIONS, and WARNINGS
Throughout this group additional important infor-
mation is presented in three ways; Notes, Cautions,
and Warnings.
NOTESare used to help describe how switches or
components operate to complete a particular circuit.
They are also used to indicate different conditions
that may appear on the vehicle. For example, an
up-to and after condition.
CAUTIONSare used to indicate information that
could prevent making an error that may damage the
vehicle.
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.
PL8W - 01 GENERAL INFORMATION 8W - 01 - 7
DESCRIPTION AND OPERATION (Continued)

Connector
Name/NumberColor Location Fig.
Left License
Lamp
(Built-Up-
Export)NAT Rear of Lamp 13
Left Park/Turn
Signal Lamp
(Except
Built-Up-
Export)BK At Lamp N/S
Left Rear Door
Lock MotorBK At Motor 16
Left Rear Fog
Lamp
(Built-Up-
Export)GY At Lamp N/S
Left Rear
SpeakerBK At Speaker 11
Left Rear Turn
Signal Lamp
(Built-Up-
Export)GY At Lamp 11
Left Rear
Wheel Speed
SensorBL At Left Rear
Wheel
OpeningN/S
Left Repeater
Lamp
(Built-Up-
Export)BL At Lamp 1
Left Tail/Stop
Lamp
(Built-Up-
Export)BK At Lamp 11
Left Tail/Stop/
Turn Signal
Lamp (Except
Built-Up-
Export)BK At Lamp N/S
License Lamp
(Except
Built-Up-
Export)NAT Rear of Lamp N/S
Low Note
HornBK Right Inner
Fender1
Manifold
Absolute
Pressure
SensorBK Left Front of
Engine4
Map/Reading
LampsBK Front of
Headliner9Connector
Name/NumberColor Location Fig.
Multi-Function
SwitchGY Left Side of
Instrument
Panel6
Oxygen
Sensor 1/1
UpstreamGY Right Rear of
Engine5
Oxygen
Sensor 1/2
Downstream
(2.0L)GY Right Rear of
Engine5
Park/Neutral
Position
Switch (ATX)BK On
TransmissionN/S
Passenger
AirbagYL Right Side of
Instrument
Panel6
Passenger
Cylinder Lock
SwitchBK At
Passengers
Door15
Passenger
Door Lock
MotorBK At
Passengers
Door15
Passenger
Door Lock
SwitchBK At
Passengers
Door15
Passenger
Power MirrorGY At
Passengers
Door15
Passenger
Power
Window MotorBK At
Passengers
Door15
Passenger
Power
Window
SwitchGY At
Passengers
Door15
Power Mirror
SwitchGY At Drivers
Door14
Power
Steering
Pressure
SwitchGY Left Rear of
Engine
Compartment2
Powertrain
Control
Module - C1BK Left Fender
Side Shield4
Powertrain
Control
Module - C2BK Left Fender
Side Shield2
PRNDL Lamp BK At Center
Console6
8W - 90 - 4 8W - 90 CONNECTOR/GROUND LOCATIONSPL
DESCRIPTION AND OPERATION (Continued)

Connector
Name/NumberColor Location Fig.
Sunroof
Control
ModuleAt Sunroof N/S
Sunroof Motor At Sunroof N/S
Sunroof
SwitchBK At Switch N/S
Sunroof Vent
SwitchAt Switch N/S
Throttle
Position
SensorBK On Throttle
Body2
Torque
Converter
Clutch
Solenoid
(ATX)BK On
Transmission2
Traction
Control SwitchWT Center of
Instrument
Panel7Connector
Name/NumberColor Location Fig.
Trunk Key
Cylinder
SwitchGY On Decklid 17
Underhood
LampBK At Lamp N/S
Vehicle Speed
Control ServoBK At Right Front
Strut Tower1, 3
Vehicle Speed
SensorBK On
Transmission5
Windshield
Washer PumpRD At Right Front
Wheel
Opening1
Wipe/Wash
SwitchGY Center of
Instrument
Panel6
Wiper Motor BK Left Side of
Engine
CompartmentN/S
8W - 90 - 6 8W - 90 CONNECTOR/GROUND LOCATIONSPL
DESCRIPTION AND OPERATION (Continued)

Connector
Name/NumberColor Location Fig.
Oxygen
Sensor 1/2
Downstream
(2.0L)GY Right Rear of
Engine22
Park/Neutral
Position
Switch (ATX)BK On
TransmissionN/S
Passenger
AirbagYL Left Side of
Instrument
Panel25
Passenger
Cylinder Lock
SwitchBK At
Passengers
Door33
Passenger
Door Lock
MotorBK At
Passengers
Door33
Passenger
Door Lock
SwitchBK At
Passengers
Door33
Passenger
Power MirrorBL At
Passengers
Door33
Passenger
Power
Window MotorBK At
Passengers
Door33
Passenger
Power
Window
SwitchGY At
Passengers
Door33
Power Mirror
SwitchGY At Drivers
Door34
Power
Steering
Pressure
SwitchGY Left Rear of
Engine
CompartmentN/S
Powertrain
Control
Module - C1BK Left Fender
Side Shield21
Powertrain
Control
Module - C2BK Left Fender
Side Shield19
PRNDL Lamp BK At Center
Console25
Proportional
EVAP/Purge
SolenoidBK Left Rear of
Engine
Compartment19
Radiator Fan
MotorBK Front of
Engine
Compartment19Connector
Name/NumberColor Location Fig.
Radio - C1 BK Rear of Radio 24
Radio - C2 GY Rear of Radio 24
Rear Window
Defogger
SwitchBK Center of
Instrument
Panel24
Remote
Keyless Entry
ModuleBK Center of
Instrument
Panel24
Right Back-Up
LampBK At Lamp 31
Right City
LampGY At Lamp N/S
Right Front
Door SpeakerBK At Drivers
Door34
Right Front
Fog LampBK At Lamp N/S
Right Front
Turn Signal
LampNAT At Lamp 20
Right Front
Wheel Speed
SensorBK At Right Front
Wheel
Opening20
Right
HeadlampBK At Lamp 20
Right
Headlamp
Leveling MotorGY Rear of right
HeadlampN/S
Right
Instrument
Panel SpeakerBK At Speaker 25
Right License
LampNAT At Lamp 32
Right Rear
Door Lock
MotorBK At Motor 35
Right Rear
Fog LampGY At Lamp 32
Right Rear
SpeakerBK At Speaker 30
Right Rear
Turn Signal
LampGY At Lamp 31
Right Rear
Wheel Speed
SensorBL At Right Rear
Wheel
OpeningN/S
Right
Repeater
LampBL At Lamp 18
8W - 90 - 24 8W - 90 CONNECTOR/GROUND LOCATIONSPL
DESCRIPTION AND OPERATION (Continued)

Connector
Name/NumberColor Location Fig.
Right Tail/Stop
LampBK At Lamp 31
Seat Belt
SwitchBK Under Drivers
SeatN/S
Sentry Key
Immobilizer
ModuleBK Right Side of
Instrument
Panel25
Siren Left Front of
Vehicle18
Sunroof
Control
ModuleAt Sunroof N/S
Sunroof Motor At Sunroof N/S
Sunroof
SwitchBK At Switch N/S
Sunroof Vent
SwitchAt Switch N/S
Throttle
Position
SensorBK On Throttle
Body19
Torque
Converter
Clutch
Solenoid
(ATX)BK On
Transmission19Connector
Name/NumberColor Location Fig.
Traction
Control SwitchWT Center of
Instrument
Panel24
Trunk Key
Cylinder
SwitchGY On Decklid 36
Underhood
LampBK At Lamp N/S
Vehicle Speed
Control ServoBK At Left Front
Strut Tower19
Vehicle Speed
SensorBK On
Transmission22
Windshield
Washer PumpRD At Right Front
Wheel
Opening18
Wipe/Wash
SwitchGY Center of
Instrument
Panel25
Wiper Motor BK Right Side of
Engine
Compartment23
PL8W - 90 CONNECTOR/GROUND LOCATIONS 8W - 90 - 25
DESCRIPTION AND OPERATION (Continued)

ENGINE
TABLE OF CONTENTS
page page
STANDARD SERVICE PROCEDURES........... 1
ENGINE DIAGNOSIS........................ 82.0L SOHC ENGINE....................... 15
STANDARD SERVICE PROCEDURES
TABLE OF CONTENTS
page page
GENERAL INFORMATION
FORM-IN-PLACE GASKETS & SEALERS........1
ENGINE GASKET SURFACE PREPARATION.....2
CRANKSHAFT DAMPER BOLT ACCESS PLUG . . . 2
ENGINE CORE PLUGS.....................2
ENGINE PERFORMANCE...................3HONING CYLINDER BORES.................3
MEASURING WITH PLASTIGAGE.............4
REPAIR OF DAMAGED OR WORN THREADS....5
HYDROSTATIC LOCKED ENGINE.............5
CHECKING ENGINE OIL LEVEL..............6
ENGINE OIL SERVICE......................7
GENERAL INFORMATION
FORM-IN-PLACE GASKETS & SEALERS
There are numerous places where form-in-place
gaskets are used on the engine. Care must be taken
when applying form-in-place gaskets to assure
obtaining the desired results.Do not use form-in-
place gasket material unless specified.Bead size,
continuity, and location are of great importance. Too
thin a bead can result in leakage while too much can
result in spill-over which can break off and obstruct
fluid feed lines. A continuous bead of the proper
width is essential to obtain a leak-free gasket.
There are numerous types of form-in-place gasket
materials that are used in the engine area. Mopart
Engine RTV GEN II, MopartATF-RTV, and Mopart
Gasket Maker gasket materials, each have different
properties and can not be used in place of the other.
MOPARtENGINE RTV GEN II
MopartEngine RTV GEN II is used to seal com-
ponents exposed to engine oil. This material is a spe-
cially designed black silicone rubber RTV that
retains adhesion and sealing properties when
exposed to engine oil. Moisture in the air causes the
material to cure. This material is available in three
ounce tubes and has a shelf life of one year. After one
year this material will not properly cure. Alwaysinspect the package for the expiration date before
use.
MOPARtATF RTV
MopartATF RTV is a specifically designed black
silicone rubber RTV that retains adhesion and seal-
ing properties to seal components exposed to auto-
matic transmission fluid, engine coolants, and
moisture. This material is available in three ounce
tubes and has a shelf life of one year. After one year
this material will not properly cure. Always inspect
the package for the expiration date before use.
MOPARtGASKET MAKER
MopartGasket Maker is an anaerobic type gasket
material. The material cures in the absence of air
when squeezed between two metallic surfaces. It will
not cure if left in the uncovered tube. The anaerobic
material is for use between two machined surfaces.
Do not use on flexible metal flanges.
MOPARtBED PLATE SEALANT
MopartBed Plate Sealant is a unique (green-in-
color) anaerobic type gasket material that is specially
made to seal the area between the bedplate and cyl-
inder block without disturbing the bearing clearance
or alignment of these components. The material
cures slowly in the absence of air when torqued
between two metallic surfaces, and will rapidly cure
when heat is applied.
PLENGINE 9 - 1

will clean up a bore and maintain the required lim-
its.
(2) Deglazing of the cylinder walls may be done
using a cylinder surfacing hone, recommended tool
C-3501 or equivalent, equipped with 280 grit stones,
if the cylinder bore is straight and round. 20±60
strokes depending on the bore condition, will be suf-
ficient to provide a satisfactory surface. Inspect cyl-
inder walls after each 20 strokes, using a light
honing oil.Do not use engine or transmission oil,
mineral spirits or kerosene.
(3) Honing should be done by moving the hone up
and down fast enough to get a cross-hatch pattern.
When hone marksintersectat 50-60 degrees, the
cross hatch angle is most satisfactory for proper seat-
ing of rings (Fig. 4).
(4) A controlled hone motor speed between
200±300 RPM is necessary to obtain the proper cross-
hatch angle. The number of up and down strokes per
minute can be regulated to get the desired 50±60
degree angle. Faster up and down strokes increase
the cross-hatch angle.
(5) After honing, it is necessary that the block be
cleaned again to remove all traces of abrasive.
CAUTION: Ensure all abrasives are removed from
engine parts after honing. It is recommended that a
solution of soap and hot water be used with a
brush and the parts then thoroughly dried. The bore
can be considered clean when it can be wiped
clean with a white cloth and cloth remains clean.
Oil the bores after cleaning to prevent rusting.MEASURING WITH PLASTIGAGE
PLASTIGAGE METHOD
Engine crankshaft bearing clearances can be deter-
mined by use of Plastigage or equivalent. The follow-
ing is the recommended procedure for the use of
Plastigage:
NOTE: The total clearance of the main bearings can
only be determined by removing the weight of the
crankshaft. This can be accomplished by either of
two methods:
PREFERRED METHOD
Shim the bearings adjacent to the bearing to be
checked in order to remove the clearance between
upper bearing shell and the crankshaft. This can be
accomplished by placing a minimum of 0.254 mm
(0.010 in.) shim (e. g. cardboard, matchbook cover,
etc.) between the bearing shell and the bearing cap
on the adjacent bearings and tightening bolts to
14-20 N´m (10-15 ft. lbs.). The number of main bear-
ing will vary from engine to engine.
ENGINE WITH 5 MAIN BEARINGS
²When checking #1 main bearing shim #2 main
bearing.
²When checking #2 main bearing shim #1 & 3
main bearing.
²When checking #3 main bearing shim #2 & 4
main bearing.
²When checking #4 main bearing shim #3 & 5
main bearing.
²When checking #5 main bearing shim #4 main
bearing.
ENGINE WITH 4 MAIN BEARING
²When checking #1 main bearing shim # 2 main
bearing.
Fig. 4 Cylinder Bore Cross-Hatch Pattern
1 ± CROSS-HATCH PATTERN
Fig. 5 Plastigage Placed in Lower Shell
1 ± PLASTIGAGE
9 - 4 ENGINEPL
GENERAL INFORMATION (Continued)