DESCRIPTION - CIRCUIT FUNCTIONS
All circuits in the diagrams use an alpha/numeric
code to identify the wire and it's 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.
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
DESCRIPTION - SECTION IDENTIFICATION AND
INFORMATION
The wiring diagrams are grouped into individual
sections. If a component is most likely found in a par-
ticular group, it will be shown complete (all wires,
connectors, and pins) within that group. For exam-
ple, the Auto Shutdown Relay is most likely to be
found in Group 30, so it is shown there complete. It
can, however, be shown partially in another group if
it contains some associated wiring.
Splice diagrams in Section 8W-70 show the entire
splice and provide references to other sections the
splices serves. Section 8W-70 only contains splice dia-
grams that are not shown in their entirety some-
where else in the wiring diagrams.
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.
WIRING SECTION CHART
GROUP TOPIC
8W-01 thru
8W-09General information and Diagram
Overview
8W-10 thru
8W-19Main Sources of Power and
Vehicle Grounding
8W-20 thru
8W-29Starting and Charging
8W-30 thru
8W-39Powertrain/Drivetrain Systems
8W-40 thru
8W-49Body Electrical items and A/C
8W-50 thru
8W-59Exterior Lighting, Wipers and
Trailer Tow
8W-60 thru
8W-69Power Accessories
8W-70 Splice Information
8W-80 Connector Pin Outs
8W-91 Connector, Ground and Splice
Locations
8W - 01 - 6 8W-01 WIRING DIAGRAM INFORMATIONRS
WIRING DIAGRAM INFORMATION (Continued)
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STANDARD PROCEDURE - TESTING OF
VOLTAGE POTENTIAL
(1) Connect the ground lead of a voltmeter to a
known good ground (Fig. 7).
(2) Connect the other lead of the voltmeter to the
selected test point. The vehicle ignition may need to
be turned ON to check voltage. Refer to the appropri-
ate test procedure.
STANDARD PROCEDURE - TESTING FOR
CONTINUITY
(1) Remove the fuse for the circuit being checked
or, disconnect the battery.
(2) Connect one lead of the ohmmeter to one side
of the circuit being tested (Fig. 8).
(3) Connect the other lead to the other end of the
circuit being tested. Low or no resistance means good
continuity.
STANDARD PROCEDURE - TESTING FOR A
SHORT TO GROUND
(1) Remove the fuse and disconnect all items
involved with the fuse.
(2) Connect a test light or a voltmeter across the
terminals of the fuse.
(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.
Fig. 7 TESTING FOR VOLTAGE POTENTIAL
Fig. 8 TESTING FOR CONTINUITY
1 - FUSE REMOVED FROM CIRCUIT
RS8W-01 WIRING DIAGRAM INFORMATION8W-01-9
WIRING DIAGRAM INFORMATION (Continued)
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STANDARD PROCEDURE - 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 or energizing the items in the
fuse circuit one at a time. When the fuse blows the
circuit with the short to ground has been isolated.
STANDARD PROCEDURE - 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, component or circuit.
(3) Operate the item.
(4) The voltmeter will show the difference in volt-
age between the two points.
SPECIAL TOOLS
WIRING/TERMINAL
Fig. 9 TESTING FOR VOLTAGE DROP
PROBING TOOL PACKAGE 6807
TERMINAL PICK TOOL SET 6680
TERMINAL REMOVING TOOLS 6932 AND 8638
TERMINAL REMOVING TOOL 6934
8W - 01 - 10 8W-01 WIRING DIAGRAM INFORMATIONRS
WIRING DIAGRAM INFORMATION (Continued)
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8W-02 COMPONENT INDEX
Component Page
A/C Compressor Clutch Relay............ 8W-42
A/C Compressor Clutch................. 8W-42
A/C- Heater Control.................... 8W-42
A/C Pressure Sensor................... 8W-42
A/C-Heater Control.................... 8W-42
Accelerator Pedal Position Sensor......... 8W-30
Accessory Relay....................... 8W-10
Adjustable Pedals Module............... 8W-30
Adjustable Pedals Switch................ 8W-30
Airbag Control Module.................. 8W-43
Ambient Temp Sensor.................. 8W-49
Antenna............................. 8W-47
Auto Shut Down Relay................. 8W-30
Auto Temp Control..................... 8W-42
Automatic Day/Night Mirror............. 8W-49
Back-Up Lamp Switch.................. 8W-51
Battery Temperature Sensor............. 8W-20
Battery............................. 8W-20
Blend Door Actuators................... 8W-42
Body Control Module................... 8W-45
Boost Pressure Sensor.................. 8W-30
B-Pillar Switches...................... 8W-61
Brake Lamp Switch................. 8W-30, 51
Brake Transmission Shift Interlock
Solenoid........................... 8W-31
Cabin Heater Assist.................... 8W-30
Camshaft Position Sensor............... 8W-30
CD Changer.......................... 8W-47
Center High Mounted Stop Lamp......... 8W-51
Cinch/Release Motors................... 8W-61
Clockspring.................. 8W-33, 41, 43, 47
Clutch Pedal Interlock Switch Jumper..... 8W-10
Clutch Pedal Interlock Switch............ 8W-10
Combination Relays.................... 8W-54
Controller Antilock Brake............... 8W-35
Crank Case Ventilation Heater........... 8W-30
Crankshaft Position Sensor.............. 8W-30
Cylinder Lock Switches................. 8W-39
Data Link Connector................... 8W-18
Diagnostic Junction Port................ 8W-18
Door Ajar Switches.................... 8W-39
Door Lock Motor/Ajar Switches........... 8W-61
Door Lock Switches.................... 8W-61
Driver Airbag......................... 8W-43
EGR Solenoid......................... 8W-30
Electric Wiper De-Icer.................. 8W-48
Engine Control Module................. 8W-30
Engine Coolant Temp Sensor............. 8W-30
Engine Oil Pressure Switch.............. 8W-30
EVAP/Purge Solenoid................... 8W-30
Evaporator Temperature Sensor.......... 8W-42
Floor Console Lamp.................... 8W-44Component Page
Fog Lamps........................... 8W-50
Front Blower Module................... 8W-42
Front Blower Motor Relay............... 8W-42
Front Blower Motor.................... 8W-42
Front Cigar Lighter.................... 8W-41
Front Control Module.................. 8W-10
Front Fog Lamp Relay.................. 8W-50
Front Intrusion Sensor................. 8W-39
Front Washer Pump Motor.............. 8W-53
Front Wiper On/Off Relay............... 8W-53
Fuel Heater.......................... 8W-30
Fuel Injectors........................ 8W-30
Fuel Pressure Solenoid................. 8W-30
Fuel Pump Module.................... 8W-30
Full Open Switches.................... 8W-61
Fuselink............................. 8W-10
Fuses............................... 8W-10
Generator............................ 8W-20
Glow Plug Relay...................... 8W-30
Glow Plugs........................... 8W-30
Grounds............................. 8W-15
Halo Lamp........................... 8W-44
Headlamp Leveling Motors.............. 8W-50
Headlamp Switch...................... 8W-50
Headlamp Washer Relay................ 8W-53
Headlamps........................... 8W-50
Heated Seat Backs..................... 8W-63
Heated Seat Cushions.................. 8W-63
Heated Seat Modules................... 8W-63
High Beam Lamps..................... 8W-50
High Note Horn....................... 8W-41
Horn Relay.......................... 8W-41
Idle Air Control Motor.................. 8W-30
Ignition Coil.......................... 8W-30
Ignition Switch....................... 8W-10
Inlet Air Temperature Sensor............ 8W-30
Instrument Cluster.................... 8W-40
Instrument Panel Switch Bank . . 8W-44, 52, 53, 63
Integrated Power Module................ 8W-10
Knock Sensor......................... 8W-30
License Lamp......................... 8W-51
Lift Pump Motor...................... 8W-30
Liftgate Ajar Switch................. 8W-39, 61
Liftgate Cinch/Release Motor............. 8W-61
Liftgate Cylinder Lock Switch............ 8W-39
Liftgate Flood Lamps................... 8W-44
Liftgate Right Pinch Sensor.............. 8W-61
Low Beam Lamps.................... 8W-50-9
Manifold Absolute Pressure Sensor........ 8W-30
Mass Air Flow Sensor.................. 8W-30
Memory Seat/Mirror Module.......... 8W-62, 63
Memory Set Switch.................... 8W-63
RS8W-02 COMPONENT INDEX8W-02-1
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8W-10 POWER DISTRIBUTION
Component Page
A/C Compressor Clutch....... 8W-10-22, 24, 45, 47
A/C Compressor Clutch
Relay................ 8W-10-22, 24, 44, 45, 47
Accessory Relay................ 8W-10-16, 31, 64
Adjustable Pedals Module........... 8W-10-40, 46
Airbag Control Module............. 8W-10-63, 68
Ambient Temp Sensor................. 8W-10-61
Auto Shut Down Relay............. 8W-10-21, 41
Auto Temp Control................... 8W-10-40
Back-Up Lamp Switch................ 8W-10-65
Battery................. 8W-10-13, 14, 15, 41, 47
Blower Motor Resistor.............. 8W-10-19, 38
Body Control Module...... 8W-10-25, 40, 45, 48, 49,
51, 53, 54, 55, 56, 68
Brake Fluid Level Switch.............. 8W-10-64
Brake Lamp Switch............. 8W-10-26, 51, 66
Brake Transmission Shift Interlock
Solenoid......................... 8W-10-62
Cabin Heater Assist............. 8W-10-23, 43, 59
Camshaft Position Sensor.............. 8W-10-44
Center High Mounted Stop Lamp........ 8W-10-66
Clockspring........................ 8W-10-60
Clutch Pedal Interlock
Switch............... 8W-10-18, 37, 53, 54, 60
Clutch Pedal Interlock Switch
Jumper............... 8W-10-18, 37, 53, 54, 60
Controller Antilock
Brake.......... 8W-10-18, 25, 37, 49, 55, 61, 66
Crank Case Ventilation Heater.......... 8W-10-48
Data Link Connector............... 8W-10-36, 68
Defogger Relay.............. 8W-10-19, 20, 39, 63
Diagnostic Junction Port............... 8W-10-61
Driver Door Lock Switch............ 8W-10-33, 35
Driver Heated Seat Module............. 8W-10-49
Driver Power Seat Switch.............. 8W-10-49
Driver Power Window Switch........ 8W-10-34, 35
ECM/PCM Relay.................. 8W-10-23, 43
EGR Solenoid.................... 8W-10-44, 46
Electric Wiper De-Icer................. 8W-10-33
Engine Control Module . . 8W-10-18, 23, 24, 37, 43, 44,
47, 48, 65, 66
Floor Console Lamp.................. 8W-10-32
Floor Console Power Outlet.......... 8W-10-32, 36
Front Blower Module............... 8W-10-19, 38
Front Blower Motor Relay..... 8W-10-18, 19, 38, 63
Front Cigar Lighter................ 8W-10-16, 32
Front Control Module..... 8W-10-15, 16, 17, 18, 19,
20, 22, 24, 26, 27, 28, 29,
30, 31, 36, 37, 38, 39, 45,
47, 52, 53, 54, 57, 58, 59,
60, 61, 62, 63, 64, 65, 66, 68
Front Fog Lamp Relay........... 8W-10-15, 27, 63
Component Page
Front Washer Pump Motor........ 8W-10-16, 31, 68
Front Wiper Hi/Low Relay........ 8W-10-16, 30, 64
Front Wiper On/Off Relay........ 8W-10-16, 30, 59
Fuel Heater........................ 8W-10-48
Fuel Heater Relay.............. 8W-10-24, 47, 64
Fuel Injector No. 1................... 8W-10-42
Fuel Injector No. 2................... 8W-10-42
Fuel Injector No. 3................... 8W-10-42
Fuel Injector No. 4................... 8W-10-42
Fuel Injector No. 5................... 8W-10-42
Fuel Injector No. 6................... 8W-10-42
Fuel Pressure Solenoid................ 8W-10-44
Fuel Pump Module................ 8W-10-22, 45
Fuel Pump Relay............... 8W-10-22, 45, 64
Fuse 1....................... 8W-10-15, 16, 27
Fuse 2....................... 8W-10-15, 28, 29
Fuse 3....................... 8W-10-15, 28, 29
Fuse 4.................... 8W-10-15, 16, 17, 30
Fuse 5.......................... 8W-10-16, 31
Fuse 6.......................... 8W-10-16, 31
Fuse 8.......................... 8W-10-17, 36
Fuse 9.................... 8W-10-17, 18, 19, 37
Fuse 10......................... 8W-10-19, 38
Fuse 11......................... 8W-10-16, 31
Fuse 12......................... 8W-10-19, 38
Fuse 13......................... 8W-10-20, 39
Fuse 14................ 8W-10-20, 21, 23, 39, 59
Fuse 15........... 8W-10-20, 21, 22, 23, 24, 41, 43
Fuse 16................... 8W-10-21, 23, 41, 43
Fuse 17.............. 8W-10-21, 22, 23, 24, 45, 47
Fuse 18................ 8W-10-22, 24, 25, 45, 47
Fuse 19................ 8W-10-22, 24, 25, 26, 49
Fuse 20......................... 8W-10-25, 49
Fuse 21......................... 8W-10-25, 49
Fuse 22......................... 8W-10-25, 49
Fuse 23...................... 8W-10-25, 53, 54
Fuse 24......................... 8W-10-25, 51
Fuse 26...................... 8W-10-25, 26, 51
Fuse 27......................... 8W-10-26, 51
Fuse 28......................... 8W-10-16, 31
Fuse 30......................... 8W-10-26, 52
Fuse 31......................... 8W-10-26, 52
Fuse 32......................... 8W-10-26, 52
Fuse 33......................... 8W-10-16, 31
Fuselink........................ 8W-10-13, 14
G100............................. 8W-10-55
G101........................... 8W-10-41, 47
G103............................. 8W-10-68
G300........................... 8W-10-57, 58
Generator................. 8W-10-13, 14, 42, 44
Glow Plug Relay.................. 8W-10-13, 44
Headlamp Switch................. 8W-10-29, 62
RS8W-10 POWER DISTRIBUTION8W-10-1
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8W-20 CHARGING SYSTEM
Component Page
Auto Shut Down Relay................ 8W-20-2
Battery.......................... 8W-20-2, 3
Battery Temperature Sensor............ 8W-20-3
ECM/PCM Relay..................... 8W-20-3
Engine Control Module................ 8W-20-3
Fuse 16.......................... 8W-20-2, 3
Fuse 17............................ 8W-20-2Component Page
Fuselink......................... 8W-20-2, 3
G100............................ 8W-20-2, 3
G101............................ 8W-20-2, 3
Generator........................ 8W-20-2, 3
Integrated Power Module............ 8W-20-2, 3
Powertrain Control Module............. 8W-20-2
Starter Motor..................... 8W-20-2, 3
RS8W-20 CHARGING SYSTEM8W-20-1
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8W-21 STARTING SYSTEM
Component Page
Battery.......................... 8W-21-2, 3
Clutch Pedal Interlock Switch......... 8W-21-2, 3
Clutch Pedal Interlock Switch Jumper.... 8W-21-2
Engine Control Module................ 8W-21-3
Front Control Module................. 8W-21-2
Fuse 9........................... 8W-21-2, 3
Fuselink......................... 8W-21-2, 3Component Page
G101............................ 8W-21-2, 3
Generator........................ 8W-21-2, 3
Ignition Switch.................... 8W-21-2, 3
Integrated Power Module............ 8W-21-2, 3
Powertrain Control Module............. 8W-21-2
Starter Motor..................... 8W-21-2, 3
Starter Motor Relay................ 8W-21-2, 3
RS8W-21 STARTING SYSTEM8W-21-1
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8W-30 FUEL/IGNITION SYSTEM
Component Page
A/C Compressor Clutch............... 8W-30-18
A/C Compressor Clutch Relay........ 8W-30-3, 18
A/C Pressure Sensor............ 8W-30-9, 15, 25
Accelerator Pedal Position Sensor....... 8W-30-32
Adjustable Pedals Module............. 8W-30-17
Adjustable Pedals Switch............. 8W-30-17
Auto Shut Down Relay.... 8W-30-2, 5, 7, 8, 12, 13
Battery...................... 8W-30-2, 18, 26
Battery Temperature Sensor........... 8W-30-25
Body Control Module.............. 8W-30-4, 19
Boost Pressure Sensor................ 8W-30-25
Brake Lamp Switch............. 8W-30-6, 21, 31
Cabin Heater Assist................. 8W-30-22
Camshaft Position Sensor........ 8W-30-7, 13, 24
Clockspring...................... 8W-30-3, 23
Clutch Pedal Upstop Switch........... 8W-30-30
Crank Case Ventilation Heater......... 8W-30-19
Crankshaft Position Sensor....... 8W-30-7, 13, 24
Data Link Connector............... 8W-30-4, 22
Diagnostic Junction Port......... 8W-30-4, 23, 17
Dosing Pump....................... 8W-30-22
ECM/PCM Relay........ 8W-30-18, 20, 24, 26, 28
EGR Solenoid.................... 8W-30-5, 28
Engine Control Module . . . 8W-30-18, 19, 20, 21, 22,
23, 24, 25, 26, 27, 28, 29, 30, 31, 32
Engine Coolant Temp Sensor...... 8W-30-9, 15, 25
Engine Oil Pressure Sensor........... 8W-30-21
Engine Oil Pressure Switch............ 8W-30-6
Engine Oil Temperature Sensor........ 8W-30-24
Evap/Purge Solenoid.................. 8W-30-3
Front Control Module...... 8W-30-3, 4, 17, 22, 30
Fuel Heater........................ 8W-30-29
Fuel Heater Relay................ 8W-30-19, 29
Fuel Injector No. 1............. 8W-30-8, 12, 27
Fuel Injector No. 2............. 8W-30-8, 12, 27
Fuel Injector No. 3............. 8W-30-8, 12, 27
Fuel Injector No. 4............. 8W-30-8, 12, 27
Fuel Injector No. 5.................. 8W-30-12
Fuel Injector No. 6.................. 8W-30-12
Fuel Pressure Sensor................ 8W-30-31
Fuel Pressure Solenoid............... 8W-30-20
Fuel Pump Module................ 8W-30-4, 19
Fuel Pump Relay.................... 8W-30-4
Fuse 14........................... 8W-30-17
Fuse 15........................ 8W-30-22, 29
Fuse 16 . . 8W-30-2, 5, 7, 8, 12, 13, 18, 20, 24, 26, 28
Fuse 17.................... 8W-30-2, 4, 19, 29Component Page
Fuse 18........................ 8W-30-18, 17
Fuse 26........................... 8W-30-31
Fuselink.......................... 8W-30-26
G100.............................. 8W-30-2
G101........................... 8W-30-2, 18
G103................... 8W-30-5, 6, 18, 19, 22
G300..................... 8W-30-6, 17, 21, 30
G302........................ 8W-30-4, 19, 29
Generator....................... 8W-30-2, 19
Glow Plug No. 1.................... 8W-30-26
Glow Plug No. 2.................... 8W-30-26
Glow Plug No. 3.................... 8W-30-26
Glow Plug No. 4.................... 8W-30-26
Glow Plug Relay.................... 8W-30-26
Idle Air Control Motor............. 8W-30-11, 14
Ignition Coil..................... 8W-30-7, 13
Ignition Switch..................... 8W-30-16
Inlet Air Temperature Sensor....... 8W-30-10, 14
Integrated Power
Module.......... 8W-30-2, 3, 4, 5, 7, 8, 12, 13,
18, 19, 20, 22, 24, 26, 28, 29, 30, 31
Knock Sensor.................... 8W-30-9, 15
Leak Detection Pump................ 8W-30-16
Left Speed Control Switch........... 8W-30-3, 23
Lift Pump Motor.................... 8W-30-29
Lift Pump Relay.................... 8W-30-29
Manifold Absolute Pressure Sensor.... 8W-30-9, 15
Mass Air Flow Sensor................ 8W-30-20
Oxygen Sensor 1/1 Upstream........... 8W-30-5
Oxygen Sensor 1/2 Downstream......... 8W-30-5
Park/Neutral Position Switch.......... 8W-30-11
Power Mirror Switch................. 8W-30-17
Powertrain Control Module . 8W-30-2, 3, 4, 5, 6, 10,
11, 7, 8, 9, 12, 13, 14, 15, 16
Radiator Fan Relay................... 8W-30-3
Radiator Fan Relay No. 1............. 8W-30-31
Radiator Fan Relay No. 2............. 8W-30-31
Radiator Fan Relay No. 3............. 8W-30-31
Right Speed Control Switch......... 8W-30-3, 23
Speed Control Servo.................. 8W-30-6
Starter Motor Relay............... 8W-30-4, 19
Throttle Position Sensor........... 8W-30-10, 14
Torque Converter Clutch Solenoid....... 8W-30-16
Transmission Control Module . . 8W-30-7, 10, 11, 14
Transmission Range Sensor......... 8W-30-11, 14
Vehicle Speed Sensor............ 8W-30-7, 11, 28
Water In Fuel Sensor................ 8W-30-30
RS8W-30 FUEL/IGNITION SYSTEM8W-30-1
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