²Ohmmeter - Used to check the resistance
between two points of a circuit. Low or no resistance
in a circuit means good continuity.
CAUTION: Most of the electrical components used
in today's vehicles are Solid State. When checking
resistance in these circuits use a meter with a 10 -
megohm or greater impedance rating. In addition,
make sure the power is disconnected from the cir-
cuit. Circuits that are powered up by the vehicle's
electrical system can cause damage to the equip-
ment and provide false readings.
²Probing Tools - These tools are used for probing
terminals in connectors (Fig. 5). Select the proper
size tool from Special Tool Package 6807, and insert
it into the terminal being tested. Use the other end
of the tool to insert the meter probe.
INTERMITTENT AND POOR CONNECTIONS
Most intermittent electrical problems are caused
by faulty electrical connections or wiring. It is also
possible for a sticking component or relay to cause a
problem. Before condemning a component or wiring
assembly, check the following items.
²Connectors are fully seated
²Spread terminals, or terminal push out
²Terminals in the wiring assembly are fully
seated into the connector/component and locked into
position
²
Dirt or corrosion on the terminals. Any amount of
corrosion or dirt could cause an intermittent problem
²Damaged connector/component casing exposing
the item to dirt or moisture
²Wire insulation that has rubbed through causing
a short to ground
²Some or all of the wiring strands broken inside
of the insulation
²Wiring broken inside of the insulation
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 area.
(6) Verify the proper operation. For this step,
check for proper operation of all items on the
repaired circuit. Refer to the wiring diagrams.
STANDARD PROCEDURE
STANDARD PROCEDURE - ELECTROSTATIC
DISCHARGE (ESD) SENSITIVE DEVICES
All ESD sensitive components are solid state and a
symbol (Fig. 6) is used to indicate this. When han-
dling any component with this symbol, comply with
the following procedures to reduce the possibility of
electrostatic charge build up on the body and inad-
vertent discharge into the component. If it is not
known whether the part is ESD sensitive, assume
that it is.
(1) Always touch a known good ground before han-
dling the part. This should be repeated while han-
dling the part and more frequently after sliding
across a seat, sitting down from a standing position,
or walking a distance.
(2) Avoid touching electrical terminals of the part,
unless instructed to do so by a written procedure.
(3) When using a voltmeter, be sure to connect the
ground lead first.
(4) Do not remove the part form it's protective
packing until it is time to install the part.
(5) Before removing the part from it's pakage,
ground the pakage to a known good ground on the
vehicle.
Fig. 5 PROBING TOOL
1 - SPECIAL TOOL 6801
2 - PROBING END
Fig. 6 ELECTROSTATIC DISCHARGE SYMBOL
8W - 01 - 8 8W-01 WIRING DIAGRAM INFORMATIONRS
WIRING DIAGRAM INFORMATION (Continued)
ProCarManuals.com
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)
ProCarManuals.com
CONNECTOR
REMOVAL
(1) Disconnect battery.
(2) Release Connector Lock (Fig. 10).
(3) Disconnect the connector being repaired from
its mating half/component.
(4) Remove the dress cover (if applicable) (Fig. 10).
(5) Release the Secondary Terminal Lock, if
required (Fig. 11).
(6) Position the connector locking finger away from
the terminal using the proper special tool. Pull on
the wire to remove the terminal from the connector
(Fig. 12).
INSTALLATION
(1) Insert the removed terminal in the same cavity
on the repair connector.
(2) Repeat steps for each terminal in the connec-
tor, being sure that all wires are inserted into the
proper cavities. For additional connector pin-out
identification, refer to the wiring diagrams.
(3) When the connector is re-assembled, the sec-
ondary terminal lock must be placed in the locked
position to prevent terminal push out.
(4) Replace dress cover (if applicable).
(5) Connect connector to its mating half/compo-
nent.
(6) Connect battery and test all affected systems.
Fig. 10 REMOVAL OF DRESS COVER
1 - DRESS COVER
2 - CONNECTOR LOCK
3 - CONNECTOR
RS8W-01 WIRING DIAGRAM INFORMATION8W-01-11
ProCarManuals.com
1 - Secondary Terminal Lock
Fig. 11 EXAMPLES OF CONNECTOR SECONDARY TERMINAL LOCKS
8W - 01 - 12 8W-01 WIRING DIAGRAM INFORMATIONRS
CONNECTOR (Continued)
ProCarManuals.com
DIODE
REMOVAL
(1) Disconnect the battery.
(2) Locate the diode in the harness, and remove
the protective covering.
(3) Remove the diode from the harness, pay atten-
tion to the current flow direction (Fig. 13).
INSTALLATION
(1) Remove the insulation from the wires in the
harness. Only remove enough insulation to solder in
the new diode.
(2) Install the new diode in the harness, making
sure current flow is correct. If necessary, refer to the
appropriate wiring diagram for current flow (Fig. 13).
(3) Solder the connection together using rosin core
type solder only.Do not use acid core solder.
(4) Tape the diode to the harness using electrical
tape. Make sure the diode is completely sealed from
the elements.
(5) Re-connect the battery and test affected sys-
tems.
TERMINAL
REMOVAL
(1) Follow steps for removing terminals described
in the connector removal section.
(2) Cut the wire 6 inches from the back of the con-
nector.
INSTALLATION
(1) Select a wire from the terminal repair kit that
best matches the color and gage of the wire being
repaired.
(2) Cut the repair wire to the proper length and
remove one±half (1/2) inch of insulation.
(3) Splice the repair wire to the wire harness (see
wire splicing procedure).
(4) Insert the repaired wire into the connector.
(5) Install the connector locking wedge, if required,
and reconnect the connector to its mating half/compo-
nent.
(6) Re-tape the wire harness starting at 1±1/2
inches behind the connector and 2 inches past the
repair.
(7) Connect battery and test all affected systems.
Fig. 13 DIODE IDENTIFICATION
1 - CURRENT FLOW
2 - BAND AROUND DIODE INDICATES CURRENT FLOW
3 - DIODE AS SHOWN IN THE DIAGRAMS
8W - 01 - 14 8W-01 WIRING DIAGRAM INFORMATIONRS
ProCarManuals.com
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
Accelerator Pedal Position Sensor.......... 8W-30
Accessory Relay........................ 8W-10
Adjustable Pedals Module................ 8W-30
Adjustable Pedals Relay................. 8W-30
Adjustable Pedals Switch................. 8W-30
Airbag Control Module.................. 8W-43
Ambient Temperature Sensor.............. 8W-49
Antenna............................. 8W-47
ATC Remote Sensor..................... 8W-42
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
Blower Motor Resistor................... 8W-42
Body Control Module.................... 8W-45
Boost Pressure Sensor................... 8W-30
B-Pillar Switches....................... 8W-61
Brake Fluid Level Switch................ 8W-40
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 Dome Lamp..................... 8W-44
Center High Mounted Stop Lamp........... 8W-51
Cinch/Release Motors................... 8W-61
Clockspring................ 8W-30, 33, 41, 43, 47
Clutch Pedal Interlock Switch.......... 8W-10, 30
Clutch Pedal Upstop Switch............... 8W-30
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
Defogger Relay........................ 8W-48
Door Ajar Switches..................... 8W-39
Door Lock Motor/Ajar Switches............ 8W-61
Door Courtesy Lamps................... 8W-44
Door Lock Switches..................... 8W-61
Dosing Pump......................... 8W-30
Driver Airbag Squibs.................... 8W-43
Driver Seat Belt Switch.................. 8W-43
DVD Screen.......................... 8W-47
DVD/CD Changer...................... 8W-47
ECM/PCM Relay....................... 8W-30
EGR Solenoid......................... 8W-30
Electronic Control Unit.................. 8W-64
Engine Control Module.................. 8W-30
Component Page
Engine Coolant Temp Sensor.............. 8W-30
Engine Oil Pressure Sensor............... 8W-30
Engine Oil Pressure Switch............... 8W-30
EVAP/Purge Solenoid.................... 8W-30
Evaporator Temperature Sensor............ 8W-42
Floor Console Lamp..................... 8W-44
Floor Console Power Outlet............... 8W-41
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 Reading Lamps/Switch.............. 8W-44
Front Washer Pump Motor............... 8W-53
Front Wiper High/Low Relay.............. 8W-53
Front Wiper On/Off Relay................ 8W-53
Fuel Heater Relay...................... 8W-30
Fuel Heater.......................... 8W-30
Fuel Injectors......................... 8W-30
Fuel Pressure Sensor.................... 8W-30
Fuel Pressure Solenoid.................. 8W-30
Fuel Pump Module..................... 8W-30
Fuel Pump Relay....................... 8W-30
Full Open Switches..................... 8W-61
Fuses............................... 8W-10
Fuselink............................. 8W-10
Grounds............................. 8W-15
Generator............................ 8W-20
Glow Plugs........................... 8W-30
Glow Plug Relay....................... 8W-30
Headlamp Leveling Motors............... 8W-50
Headlamp Switch...................... 8W-50
Headlamp Washer Pump Motor............ 8W-53
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
Hood Ajar Switch...................... 8W-39
Horn Relay........................... 8W-41
Horn Switch.......................... 8W-41
Horns............................... 8W-41
Idle Air Control Motor................... 8W-30
Ignition Coil.......................... 8W-30
Ignition Switch........................ 8W-10
Inlet Air Temperature Sensor.............. 8W-30
Input Speed Sensor..................... 8W-31
Instrument Cluster..................... 8W-40
Instrument Panel Switch Bank.... 8W-44, 52, 53, 63
Integrated Power Module................. 8W-10
Knock Sensor......................... 8W-30
Lamp Assemblies...................... 8W-51
RS8W-02 COMPONENT INDEX8W-02-1
ProCarManuals.com
Component Page
Leak Detection Pump................... 8W-30
License Lamp...................... 8W-51, 61
Lift Pump Motor....................... 8W-30
Lift Pump Relay....................... 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 Left Pinch Sensor................ 8W-61
Liftgate Right Pinch Sensor............... 8W-61
Low Beam Lamps...................... 8W-50
Manifold Absolute Pressure Sensor......... 8W-30
Mass Air Flow Sensor................... 8W-30
Memory Seat/Mirror Module............ 8W-62, 63
Memory Set Switch..................... 8W-63
Message Center........................ 8W-46
Mid Reading Lamps.................... 8W-44
Mode Door Actuator..................... 8W-42
Multi-Function Switch............. 8W-50, 52, 53
Name Brand Speaker Relay............... 8W-47
Natural Vacuum Leak Detection Assembly.... 8W-30
Output Speed Sensor.................... 8W-31
Overhead Console................... 8W-43, 49
Oxygen Sensors........................ 8W-30
Park Lamp Relay...................... 8W-10
Park Lamps.......................... 8W-50
Park/Turn Signal Lamps................. 8W-50
Parking Brake Switch................... 8W-40
Passenger Airbag...................... 8W-43
Passenger Folding Mirror Relay............ 8W-62
Power Folding Mirror Switch.............. 8W-62
Power Liftgate Module.................. 8W-61
Power Liftgate Motor.................... 8W-61
Power Mirror Switch.................... 8W-62
Power Mirrors......................... 8W-62
Power Outlet.......................... 8W-41
Power Seat Circuit Breaker............... 8W-10
Power Seat Front Riser Motors............ 8W-63
Power Seat Front Riser Position Sensors..... 8W-63
Power Seat Horizontal Motors............. 8W-63
Power Seat Horizontal Position Sensors...... 8W-63
Power Seat Rear Riser Motors............. 8W-63
Power Seat Rear Riser Position Sensors...... 8W-63
Power Seat Recliner Motors............... 8W-63
Power Seat Recliner Position Sensors........ 8W-63
Power Seat Switches.................... 8W-63
Power Window Circuit Breaker............ 8W-10
Power Window Motor................... 8W-60
Power Window Switch................... 8W-60
Powertrain Control Module............... 8W-30
PTC's............................... 8W-10
Radiator Fans......................... 8W-42
Radiator Fan Relays.................... 8W-42
Radio............................... 8W-47
Reading Lamps........................ 8W-44
Rear A/C-Heater Unit................... 8W-42
Component Page
Rear Auto Temp Control Switch............ 8W-42
Rear Blower Front Control Switch.......... 8W-42
Rear Blower Motor Power Module.......... 8W-42
Rear Blower Motor Relay................. 8W-42
Rear Blower Motor..................... 8W-42
Rear Blower Rear Control Switch........... 8W-42
Rear Dome Lamp...................... 8W-44
Rear Intrusion Sensor................... 8W-39
Rear Mode Motor...................... 8W-42
Rear Power Outlet...................... 8W-41
Rear Temperature Motor................. 8W-42
Rear Washer Pump Motor................ 8W-53
Rear Window Defogger Grid............... 8W-48
Rear Wiper Motor...................... 8W-53
Recirculation Door Actuator............... 8W-42
Remote Keyless Entry Antenna............ 8W-61
Remote Keyless Entry Module............. 8W-61
Remote Radio Switches.................. 8W-47
Repeater Lamps....................... 8W-52
Splices.............................. 8W-70
Seat Airbags.......................... 8W-43
Seat Belt Tensioner..................... 8W-43
Sentry Key Immobilizer Module............ 8W-39
Side Impact Airbag Control Modules........ 8W-43
Siren............................... 8W-39
Sliding Door Control Modules........... 8W-43, 61
Sliding Door Latch Sensing Switches........ 8W-61
Sliding Door Lock Motors................ 8W-61
Sliding Door Lock Motor/Ajar Switches...... 8W-61
Sliding Door Motors.................... 8W-61
Solenoid/Pressure Switch Assy............. 8W-31
Speakers............................. 8W-47
Speed Control Servo.................... 8W-33
Speed Control Switches.................. 8W-33
Starter Motor Relay.................... 8W-21
Starter Motor......................... 8W-21
Stop/Turn Signal Relays................. 8W-54
Sunroof Module........................ 8W-64
Sunroof Switch........................ 8W-64
Thatcham Alarm Indicator................ 8W-39
Thatcham Alarm Module................. 8W-39
Throttle Position Sensor................. 8W-30
Traction Control Switch.................. 8W-35
Trailer Tow Connector................... 8W-54
Transmission Control Module.............. 8W-31
Transmission Control Relay............... 8W-31
Transmission Range Sensor............... 8W-31
Turn Signal Lamps..................... 8W-52
Vehicle Speed Sensor.................... 8W-30
Vent Motors.......................... 8W-60
Visor/Vanity Lamps..................... 8W-44
Washer Fluid Level Switch............... 8W-53
Water In Fuel Sensor................... 8W-30
Wheel Speed Sensors.................... 8W-35
8W - 02 - 2 8W-02 COMPONENT INDEXRS
ProCarManuals.com
8W-10 POWER DISTRIBUTION
Component Page
A/C Compressor Clutch . . . 8W-10-22, 24, 47, 48, 51
A/C Compressor Clutch
Relay............ 8W-10-22, 24, 46, 47, 48, 51
Accessory Relay............... 8W-10-16, 31, 68
Adjustable Pedals Relay.............. 8W-10-50
Airbag Control Module............ 8W-10-67, 72
Ambient Temperature Sensor.......... 8W-10-65
Auto Shut Down Relay......... 8W-10-21, 42, 43
Auto Temp Control.................. 8W-10-41
Back-Up Lamp Switch............... 8W-10-69
Battery............ 8W-10-13, 14, 15, 42, 43, 51
Blower Motor Resistor............ 8W-10-19, 39
Body Control Module.... 8W-10-25, 41, 47, 48, 52,
53, 55, 57, 58, 59, 60, 72
Brake Fluid Level Switch............. 8W-10-68
Brake Lamp Switch........... 8W-10-26, 55, 70
Brake Transmission Shift Interlock
Solenoid........................ 8W-10-66
Cabin Heater Assist........... 8W-10-23, 45, 63
Camshaft Position Sensor............. 8W-10-46
Center High Mounted Stop Lamp....... 8W-10-70
Clockspring........................ 8W-10-64
Clutch Pedal Interlock
Switch.............. 8W-10-18, 38, 57, 58, 64
Controller Antilock
Brake...... 8W-10-18, 25, 37, 38, 53, 59, 65, 70
Crank Case Ventilation Heater......... 8W-10-52
Data Link Connector........... 8W-10-36, 65, 72
Defogger Relay............ 8W-10-19, 20, 40, 67
Driver Door Lock Switch........ 8W-10-33, 34, 35
Driver Heated Seat Module........... 8W-10-53
Driver Power Seat Switch............ 8W-10-53
Driver Power Window Switch....... 8W-10-34, 35
DVD/DV Changer................... 8W-10-41
ECM/PCM Relay................. 8W-10-23, 45
EGR Solenoid................... 8W-10-46, 50
Engine Control
Module . . 8W-10-18, 23, 24, 38, 45, 46, 51, 65, 70
Floor Console Lamp................. 8W-10-32
Floor Console Power Outlet........ 8W-10-32, 36
Front Blower Module................ 8W-10-19
Front Blower Module................ 8W-10-39
Front Blower Motor Relay.... 8W-10-18, 19, 39, 67
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, 40,
47, 48, 50, 51, 56, 57,
58, 61, 62, 63, 64, 65,
66, 67, 68, 69, 70, 72
Front Fog Lamp Relay......... 8W-10-15, 27, 67
Front Washer Pump Motor...... 8W-10-16, 31, 72Component Page
Front Wiper High/Low Relay.... 8W-10-16, 30, 68
Front Wiper On/Off Relay....... 8W-10-16, 30, 63
Fuel Heater....................... 8W-10-52
Fuel Heater Relay............. 8W-10-24, 51, 68
Fuel Injector No. 1.................. 8W-10-44
Fuel Injector No. 2.................. 8W-10-44
Fuel Injector No. 3.................. 8W-10-44
Fuel Injector No. 4.................. 8W-10-44
Fuel Injector No. 5.................. 8W-10-44
Fuel Injector No. 6.................. 8W-10-44
Fuel Pressure Solenoid............... 8W-10-46
Fuel Pump Module............ 8W-10-22, 47, 48
Fuel Pump Relay........... 8W-10-22, 47, 48, 68
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, 38
Fuse 10........................ 8W-10-19, 39
Fuse 11........................ 8W-10-16, 31
Fuse 12........................ 8W-10-19, 39
Fuse 13........................ 8W-10-20, 40
Fuse 14............... 8W-10-20, 21, 23, 40, 63
Fuse 15...... 8W-10-20, 21, 22, 23, 24, 42, 43, 45
Fuse 16............... 8W-10-21, 23, 42, 43, 45
Fuse 17......... 8W-10-21, 22, 23, 24, 47, 48, 51
Fuse 18............ 8W-10-22, 24, 25, 47, 48, 51
Fuse 19.................. 8W-10-22, 24, 26, 53
Fuse 20........................ 8W-10-25, 53
Fuse 21........................ 8W-10-25, 53
Fuse 22........................ 8W-10-25, 53
Fuse 23..................... 8W-10-25, 57, 58
Fuse 24........................ 8W-10-25, 55
Fuse 26..................... 8W-10-25, 26, 55
Fuse 27........................ 8W-10-26, 55
Fuse 28........................ 8W-10-16, 31
Fuse 30........................ 8W-10-26, 56
Fuse 31........................ 8W-10-26, 56
Fuse 32........................ 8W-10-26, 56
Fuse 33........................ 8W-10-16, 31
Fuselink....................... 8W-10-13, 14
G100............................. 8W-10-59
G101....................... 8W-10-42, 43, 51
G103............................. 8W-10-72
G300.......................... 8W-10-61, 62
Generator................ 8W-10-13, 14, 44, 46
Glow Plug Relay................. 8W-10-13, 46
Headlamp Switch................ 8W-10-29, 66
Headlamp Washer Pump Motor..... 8W-10-26, 56
RS8W-10 POWER DISTRIBUTION8W-10-1
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