Downloaded from www.Manualslib.com manuals search engine The second ground path is through the headlamp
switch. Circuit M23 is spliced in with the time out
relay. When the operator turns the headlamp switch
to the dome lamp ON position, a ground path is pro-
vided through the switch on the Z1 circuit. This
ground terminates at the instrument panel left cen-
ter support.
On vehicles equipped with Remote Keyless Entry
(RKE) the M23 circuit is spliced to the RKE module.
This allows the lamp to be turned ON when a valid
signal is reveived by the RKE module from the trans-
mitter.
MAP/READING LAMPS
The map/reading lamps are powered by the M1 cir-
cuit from the Power Distribution Center (PDC). This
circuit is the Ignition-Off Draw circuit and protected
by a 10 amp fuse. The M1 circuit is spliced and pro-
vides power for the visor/vanity lamps, radio, power
mirrors, dome lamp, time delay relay, and other inte-
rior lamps.
Ground for the lamps is provided from two sources.
One is the Z3 circuit which is spliced in with the
glove box lamp and terminates at the instrument
panel left center support. The second ground is pro-
vided on circuit M23. This circuit is spliced in with
the time out relay so the lamps will turn ON when
any door is OPENED.
On vehicles equipped with Remote Keyless Entry
(RKE) the M23 circuit, which is the ground circuit
when a door is OPENED, is connected to the RKE
module. The module will provide a ground path for
the lamps with a valid signal from the transmitter.
GLOVE BOX LAMP
The glove box lamp receives power on the M1 cir-
cuit from the 10 amp fuse located in the Power Dis-
tribution Center (PDC). A switch, wired in series
after the lamp, CLOSES when the glove box door is
opened, and completes a path to ground on the Z3
circuit.
The Z3 circuit is spliced in with the ash receiver
lamp, PRNDL lamp, and the time delay relay. The Z3
circuit terminates at the instrument panel left center
support.
ASH RECEIVER LAMP
The ash receiver lamp receives power on the E2
circuit from the 4 amp fuse located in the fuse block
in cavity 12. The fuse receives power from the head-
lamp switch. Circuit E2, which is HOT at all times,
also powers the Transmission Range Indicator
(PRNDL) lamp.
When the headlamp switch is moved to the PARK
or ON position, current flows through the fuse to the
ash receiver lamp. The ground for the lamp is sup-
plied on the Z3 circuit, and terminates at the instru-
ment panel left center support. This circuit is also
spliced in with the PRNDL lamp, the ignition switch
lamp, and the glove box lamp.
UNDERHOOD LAMP
Power for the underhood lamp is supplied on cir-
cuit M1. This is the Ignition-Off Draw (IOD) circuit
and is protected by a 10 amp fuse located in the
Power Distribution Center (PDC).
When the hood is raised a ground path is com-
pleted through the mercury switch to a case ground
illuminating the lamp.
TRUNK LAMP
The trunk lamp uses a case-grounded switch
located on the trunk latch. The switch is normally
OPEN. When the deck lid is opened, the switch
CLOSES, completing a path to ground on circuit M4.
The M1 circuit provides power to the lamp, and is
HOT at all times.
HELPFUL INFORMATION
²Check the 10 amp fuse located in the Power Dis-
tribution Center (PDC) for the trunk lamp, under-
hood lamp, visor/vanity lamps, dome lamp, time
delay relay, and the glove box lamp.
²Check for a good ground at the instrument panel
left center support.
²Check the door switches for a good ground.
²Check the 4 amp fuse in the fuse block, cavity
12.
8W - 44 - 6 8W - 44 INTERIOR LIGHTINGPL
DESCRIPTION AND OPERATION (Continued)
Downloaded from www.Manualslib.com manuals search engine 8W-50 FRONT LIGHTING
INDEX
page page
GENERAL INFORMATION
INTRODUCTION......................... 7
DESCRIPTION AND OPERATION
FOG LAMPS (FRONT).................... 8HEADLAMP LEVELING MOTORS............ 8
HEADLAMPS........................... 7
PARKING LAMPS........................ 7
GENERAL INFORMATION
INTRODUCTION
The headlamp switch has 3 positions, ON, PARK
(parking lights) and OFF. Two circuits, L2 and L20
connect the headlamp switch to the headlamp dim-
mer/optical horn switch located in the multi-function
switch. The multi-function switch feeds the low and
high beams of the headlamps.
DESCRIPTION AND OPERATION
PARKING LAMPS
Circuit A3 in the Power Distribution Center (PDC)
connects to a bus bar in the fuse block. One of the
four circuits powered by the bus bar is circuit F33.
Circuit F33 connects to the headlamp switch. A 40
amp fuse in the PDC protects the A3 circuit. A 15
amp fuse, in cavity 2 of the fuse block, protects the
F33 circuit.
The headlamp switch has 3 positions, ON, PARK
(tail lamps) and OFF, plus a dimmer switch. When
the headlamp switch is in the PARK or ON position,
the switch connects circuit F33 to circuit L7. From
the headlamp switch, circuit L7 branches to power
the front parking lamps and rear tail lamps, lavalier
lamps, side marker lamps, and rear license plate
lamp.
GROUND CIRCUIT
Circuit Z1 provides ground for the parking lamps,
headlamps, lavalier lamps, tail lamps, side marker
lamps and rear license plate lamp although different
grounding points are used. Circuit Z1 also provides
the ground path for the headlamps and turn signals.
HELPFUL INFORMATION
²Check for a blown 40 amp fuse in the PDC.
²Check for a blown fuse in cavity 2 of the fuse
block.
²For the left front parking lamp, turn signal, side
marker lamp and left headlamp, the Z1 circuitgrounding point is the left side of the radiator closure
panel.
²For the right front parking lamp, turn signal,
side marker lamp and right headlamp, the Z1 circuit
grounding point is in the right fender side shield.
²Circuit L7 also feeds the radio, if equipped.
²When the headlamp switch is in the PARK or
ON position, the dimmer circuit, F33, also connects
to circuit E1. Circuit E1 powers the ash receiver
lamp, transmission range indicator lamp, instrument
panel cluster illumination lamps, HVAC control
lamp, heated rear window lamp, and radio lamp. A 4
amp fuse, in cavity 12 of the fuse block, protects cir-
cuit E1.
HEADLAMPS
The headlamp switch has 3 positions, ON, PARK
(parking lights) and OFF. Two circuits, L2 and L20
connect the headlamp switch to the headlamp dim-
mer/optical horn switch located in the multi-function
switch. The multi-function switch feeds the low and
high beams of the headlamps.
HEADLAMP SWITCH IN OFF OR PARKING
LAMP POSITION
Circuit A3 originates in the Power Distribution
Center (PDC) and supplies battery voltage for the
headlamp switch. A 40 amp fuse protects the A3 cir-
cuit. The headlamp switch has an internal 24 amp
circuit breaker that connects circuit A3 to either the
L2 or L20 circuits, depending on switch position.
In the OFF and PARK positions the headlamp
switch feeds the L20 circuit that connects to the
multi-function switch. Circuit L20 powers the high
beam circuit when the operator flashes the head-
lamps with the turn signal stalk of the multi-func-
tion switch. When the operator flashes the
headlamps with the stalk, the multi-function switch
connects the L20 circuit to the L3 circuit. The L3 cir-
cuit feeds the high beam of the headlamps.
HEADLAMP SWITCH IN ON POSITION
When the headlamp switch is in the ON position,
it connects the A3 circuit from the PDC to circuit L2.
PL8W - 50 FRONT LIGHTING 8W - 50 - 7
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INDEX
page page
DESCRIPTION AND OPERATION
BACK-UP LAMPS....................... 10
FOG LAMPS (REAR)...................... 9STOP LAMPS.......................... 10
TAIL LAMPS AND LICENSE LAMPS.......... 9
DESCRIPTION AND OPERATION
TAIL LAMPS AND LICENSE LAMPS
Circuit A3 in the Power Distribution Center (PDC)
connects to a bus bar in the fuse block. One of the
four circuits powered by the bus bar is circuit F33. A
40 amp fuse in the PDC protects the A3 circuit. A 15
amp fuse, in cavity number 2 of the fuse block, pro-
tects the F33 circuit.
The headlamp switch has 3 positions, ON, PARK
(tail lamps) and OFF, plus a dimmer switch. When
the headlamp switch is in the PARK or ON position,
it connects circuit F33 to circuit L7. From the head-
lamp switch, circuit L7 branches to power the front
parking lamps, rear tail lamps, side marker lamps,
and rear license plate lamp.
GROUND CIRCUIT
Circuit Z1 provides ground for the tail lamps, park-
ing lamps, headlamps, side marker lamps, lamps and
rear license plate lamps although different grounding
points are used. Circuit Z1 also provides the ground
path for the headlamps, stop lamps and turn signals.
HELPFUL INFORMATION
²Check for a blown 40 amp fuse in the PDC.
²Check for a blown fuse in cavity 2 of the fuse
block
²For the left rear parking lamp, turn signal, side
marker lamp, and the rear license plate the Z1 cir-
cuit grounding point is in the left rear wheel well.
²For the right rear parking lamp, turn signal and
side marker lamp, the Z1 circuit grounding point is
in the right rear wheel well.
²Circuit L7 also feeds the radio, if equipped.
²When the headlamp switch is in the PARK or
ON position, the dimmer circuit, F33, connects to cir-
cuit E1. Circuit E1 powers the ash receiver lamp,
transmission range indicator lamp, instrument panel
cluster illumination lamps, HVAC control lamp,
heated rear window lamp, and radio lamp. A 4 amp
fuse, in cavity 12 of the fuse block, protects circuit
E1.
FOG LAMPS (REAR)
The rear fog lamps will operate only when the
headlamp switch is in the ON position.
Circuit A3 from the Power Distribution Center sup-
plies (PDC) voltage to a bus bar in the fuse block.
Circuit F61 is one of four circuits that the bus bar
feeds and is protected by a 20 amp fuse in cavity 4.
Circuit F61 connects to the rear fog lamp switch and
the front fog lamp relay.
The fog lamp switch contains a relay that supplies
voltage to the fog lamps. Circuit L2 from the multi-
function switch supplies voltage to the coil side of the
relay (only when the headlamps operate on LOW
beam). Circuit F61 supplies voltage to the contact
side of the relay. During LOW beam headlamp oper-
ation when the fog lamp switch contacts CLOSE, cir-
cuit F61 connects to circuit L38.
Circuit L38 feeds right and left fog lamp. Circuit
L38 also feeds the green L.E.D. in the switch that
illuminates during fog lamps operation.
When the headlamp switch is in the PARK or ON
position, circuit E1 from the headlamp switch sup-
plies voltage for circuit E2. Circuit E2 contains a 4
amp fuse in cavity 12 of the fuse block, and powers
the bulb in the fog lamp switch.
GROUND CIRCUIT
Although circuit Z1 provides the ground path for
the fog lamps, the circuit has different grounding
points for each lamp.
Circuit Z3 supplies the ground path for the fog
lamp switch. The grounding point for the headlamp
switch is the instrument panel left center support.
HELPFUL INFORMATION
²Circuit Z1 also supplies ground for side marker
lamps, turn signals, parking lamps and headlamps.
²Circuit A3 from the PDC supplies voltage to the
headlamp switch for circuit L2.
²Circuit F33 from the fuse block supplies voltage
to the headlamp switch for circuit E1. Circuit A3
from the PDC supplies voltage to a bus bar in the
fuse block that feeds the F33 circuit. Fuse 2, in the
fuse block, protects the F33 circuit.
PL8W - 51 REAR LIGHTING 8W - 51 - 9
Downloaded from www.Manualslib.com manuals search engine STOP LAMPS
Circuit F32 in the Power Distribution Center
(PDC) feeds the stop lamps. Circuit F32 connects to
the stop lamp switch. A 15 amp fuse in the PDC pro-
tects circuit F32.
When the operator presses the brake pedal, the
stop lamp switch CLOSES and connects circuit F32
to circuit L50. Circuit L50 connects to the stop
lamps. Circuit L50 also splices to power the CHMSL
lamp.
GROUND CIRCUIT
Circuit Z1 provides ground for the stop lamps,
CHMSL lamp, and the stop lamp switch. The Z1 cir-
cuit has more than one grounding point. It also sup-
plies ground path for the tail lamps, parking lamps,
headlamps, side marker lamps, rear license plate
lamp, back-up lamps and turn signals.
HELPFUL INFORMATION
²Check for blown fuses in circuit F32 (in PDC).
²Check for continuity across the stop lamp switch
when it is CLOSED.
²For rear lighting on the left side of the vehicle,
the Z1 circuit grounding point is in the left rear
wheel well.
²For rear lighting on the right side of the vehicle,
the Z1 circuit grounding point is in the right rear
wheel well.
²For the stop lamp switch, the Z1 circuit ground-
ing point is in the left front inner fender shield.
BACK-UP LAMPS
In the RUN position, the ignition switch connects
circuit A2 from the Power Distribution Center (PDC)to circuit A22. Circuit A22 feeds a bus bar in the fuse
block. A 40 amp fuse in the PDC protects the A2 and
A22 circuits.
Circuit F20 is one of four circuits that connects to
the fuse block bus bar fed by circuit A22. Circuit F20
supplies power to the back-up lamp switch. On 3±spd
automatic transaxle vehicles, the back-up lamp
switch is part of an assembly that includes the park/
neutral position switch.
When the operator puts the transmission in
REVERSE, the back-up lamp switch connects circuit
F20 to circuit L1. Circuit L1 feeds the back-up lamps.
A 10 amp fuse, in cavity 8 of the fuse block, protects
F20 and L1 circuits.
GROUND CIRCUIT
Circuit Z1 provides ground for the back-up lamps.
The Z1 circuit has more than one grounding point. It
also supplies ground path for the tail lamps, parking
lamps, headlamps, side marker lamps, rear license
plate lamp, stop lamps and turn signals.
HELPFUL INFORMATION
²Check for blown fuses in circuits A2 and F20.
²Check for continuity across the stop lamp switch
when it is CLOSED.
²For rear lighting on the left side of the vehicle,
the Z1 circuit grounding point is in the left rear
wheel well.
²For rear lighting on the right side of the vehicle,
the Z1 circuit grounding point is in the right rear
wheel well.
²Circuit F20 feeds the heated rear window switch
and A/C clutch cycling switch.
8W - 51 - 10 8W - 51 REAR LIGHTINGPL
DESCRIPTION AND OPERATION (Continued)
Downloaded from www.Manualslib.com manuals search engine 8W-90 CONNECTOR/GROUND LOCATIONS
DESCRIPTION AND OPERATION
INTRODUCTION
This section provides illustrations identifying the
general location of components, grounds, and connec-
tors in the vehicle. A index is provided. Use the wir-
ing diagrams in each section for connector/groundnumber identification. Refer to the index for the
proper figure number.CONNECTOR/GROUND LOCATIONS
For items not shown in this section a N/S is placed
in the Fig. column.
Connector
Name/NumberColor Location Fig.
A/C Compressor
ClutchBK Top of
Compressor8
A/C Cycling Switch BK Center of HVAC
HousingN/S
A/C-Heater Blower
MotorBK RT Side of
HVAC HousingN/S
A/C-Heater Control
SwitchBK Rear of Control 13
A/C High Pressure
SwitchGY Top of A/C
Compressor8
A/C Low Pressure
SwitchBK LT Side of Cowl
PanelN/S
ABS Hydraulic
ModulatorDK/
GYTop of Hydraulic
UnitN/S
ABS Relay Box BK Top of Hydraulic
UnitN/S
Airbag Control
ModuleYL Rear of
Gearshift11
Ash Receiver Lamp BK At Lamp 13
Back-Up Lamp
SwitchGY Top of
Transmission3
Battetry
Temperature
SensorBK Bottom of
Battery Tray6
Blower Motor
Resistor BlockNAT Left Side Cowl
To pN/S
Brake Warning
Lamp SwitchBK Right Frame
RailN/S
C101 BR Top of I.P. 13
C102 BK Top of I.P. 13
C103 BL Top of I.P. 13
C105 BL Right Kick Panel N/S
C108 BK Left Lower Cowl N/S
C160 LT/
GYLeft Fender Side
Shield5Connector
Name/NumberColor Location Fig.
C161 BK Left Fender Side
Shield5
C203 BK Left Side of I.P. N/S
C205 BL Left Kick Panel 13
C206 BL Top Left of I.P. N/S
C225 RD Left Kick Panel 9
C230 GY Right Kick Panel 14
C231 BL Right Kick Panel N/S
C241 BK Right Side of I.P. N/S
C301 GY Right B-Pillar 15
C303 GY Right B-Pillar 15
C309 BK Left Trunk Area 18
Camshaft Position
SensorBK Left Side of
Engine7
Clockspring NAT Rear of
Clockspring10
Clutch Pedal
Position SwitchBK Top of Clutch
Pedal2
Controller Anti-Lock
BrakeBK Left Side Kick
PanelN/S
Crankshaft Position
SensorBK Rear of Engine 7
Datalink Connector BK Left Side of
Steering ColumnN/S
Dome Lamp BK Left C- Pillar 16
Downstream
Heated Oxygen
SensorBK Rear of Catalytic
ConverterN/S
Driver Side Airbag YL Rear of
Clockspring10
Duty Cycle/EVAP
Purge SolenoidGY Right Frame
Rail4
Engine Coolant
Temp SensorBK Left Side of
Engine7
PL8W - 90 CONNECTOR/GROUND LOCATIONS 8W - 90 - 1
Downloaded from www.Manualslib.com manuals search engine Connector
Name/NumberColor Location Fig.
Engine Oil Pressure
SwitchGN Rear of Engine 7
EGR Transducer
SolenoidGY Left Rear of
Engine7
Front Fog Lamp
SwitchGN Rear of Switch 14
Fuel Injector #1 BK At Injector 8
Fuel Injector #2 BK At Injector 8
Fuel Injector #3 BK At Injector 8
Fuel Injector #4 BK At Injector 8
Fuel Pump Module LT/
GYRight Rear
Frame Rail19
Generator BK Rear of
Generator7
Glove Box Lamp
and SwitchGY Rear of Switch 13
Headlamp Dimmer
and Optical Horn
SwitchBK Rear of Switch 10
Headlamp Leveling
SwitchBK Rear of Switch 10
Headlamp Switch BK Rear of Switch 14
Horn #1 BK Left Rear of
Fascia6
Horn #2 BK Left Rear of
Fascia6
Idle Air Control
MotorBK On Throttle
Body8
Ignition Coil Pack BK Top of Valve
Cover7
Ignition Switch BK Rear of Switch 10
Immobilizer Engine
SensorBK Right Fender
Side ShieldN/S
Immobilizer Sensor BK Top of I.P. N/S
Instrument Cluster
C1BK Rear of Cluster 14
Instrument Cluster
C2BK Rear of Cluster 14
Intake Air
Temp/MAP SensorBK Left Side of
Intake8
Intermittent
Wipe/Wash SwitchNAT Rear of Switch 10
Key-In Switch GN Rear of Switch 10
Knock Sensor GY Front of Engine 8Connector
Name/NumberColor Location Fig.
Left Airbag Impact
SensorGY Left Side of
Radiator Closure
Panel1
Left Back-Up Lamp GY At Lamp 20
Left Door Lock
SwitchWT At Switch 12
Left Door Window
MotorBK At Motor 12
Left Fog Lamp BK Rear of Lamp 4
Left Front Door
Lock MotorBK At Motor 12
Left Front Door
SpeakerBK At Speaker 12
Left Front Wheel
Speed SensorGY Left Fender Side
ShieldN/S
Left Headlamp BK At Lamp 6
Left Headlamp
Leveling MotorBK Rear of Left
HeadlampN/S
Left Instrument
Panel SpeakerBK At Speaker N/S
Left License Lamp NAT At Lamp 18
Left Park/Turn
Signal LampBK Rear of Lamp 6
Left Power Mirror BK At Mirror 12
Left Power Window
SwitchWT At Switch 12
Left Rear Door
Lock MotorBK Rear of Door 15
Left Rear Fog
LampNAT At Lamp N/S
Left Rear Speaker BK At Speaker 16
Left Rear Wheel
Speed SensorBK Left Rear Frame
RailN/S
Left Repeater Lamp BK At Lamp N/S
Left Tail/Stop Lamp BK At Lamp 20
Left Turn Signal
LampNAT At Lamp 6
Map/Reading
LampsBK At Lamp 9
Master Power
Window SwitchWT At Switch 12
Park/Neutral
Position SwitchBK Front of
Transmission3
Passenger Side
AirbagYL Left Side of I.P. 13
8W - 90 - 2 8W - 90 CONNECTOR/GROUND LOCATIONSPL
DESCRIPTION AND OPERATION (Continued)
Downloaded from www.Manualslib.com manuals search engine Connector
Name/NumberColor Location Fig.
Power Folding
Mirror RelayBK Near Power
MirrorN/S
Power Mirror Fuse
HolderBK Near Power
MirrorN/S
Power Mirror Switch
C1BK At Switch 12
Power Mirror Switch
C2BK At Switch 12
Power Steering
Pressure SwitchGY Rear of Steering
Gear5
Power Sunroof
MotorRD At Motor 9
Powertrain Control
Module C1BK Left Fender Side
Shield5
Powertrain Control
Module C2BK Left Fender Side
Shield5
PRNDL Lamp BK Rear of
Gearshift11
Radiator Fan Motor BK Rear of Fan 6
Radio C1 BK Rear of Radio 13
Radio C2 GY Rear of Radio 13
Rear Fog Lamp
SwitchBK At Switch N/S
Rear Window
Defogger SwitchBK Rear of Switch 13
Right Airbag Impact
SensorGY Right Side
Radiator Closure
Panel1
Right Back-Up
LampGY At Lamp 20
Right Door Lock
SwitchWT At Switch 12
Right Door Window
MotorBK At Motor 12
Right Fog Lamp BK Rear of Fascia 4
Right Front Door
Lock MotorBK At Motor 12
Right Front Door
SpeakerBK At Speaker 12
Right Front Wheel
Speed SensorGY Right Fender
Side Shield4
Right Headlamp BK Rear of Lamp 4
Right Headlamp
Leveling MotorBK Rear of Right
Headlamp4
Right Instrument
Panel SpeakerBK At Speaker N/SConnector
Name/NumberColor Location Fig.
Right License Lamp NAT At Lamp 18
Right Park/Turn
Signal LampNAT At Lamp 4
RIght Power Mirror BK At Mirror 12
Right Rear Door
Lock MotorBK Rear of Door 15
Right Rear Fog
LampNAT At Lamp N/S
Right Rear Speaker BK At Speaker 16
Right Rear Wheel
Speed SensorBK Right Rear
Frame RailN/S
Right Repeater
LampBK At Lamp N/S
Right TaIl/Stop
LampBK At Lamp 4
Right Turn Signal
LampBK At Lamp 20
Solid State Fan
RelayBK Left Front Frame
Rail6
Stop Lamp Switch GY Top of Brake
Pedal2
Sunroof Slide
SwitchBL At Switch 9
Sunroof Vent
SwitchYL At Switch 9
Throttle Position
SensorBK On Throttle
Body8
Torque Converter
Clutch SolenoidBK Top of
Transmission3
Trunk Lamp BK At Lamp 17
Turn Signal/Hazard
SwitchBK Rear of Switch 10
Upstream Heated
Oxygen SensorGY Right Rear of
Engine4, 7
Vapor Canister
Leak DetectorBK Right Front
FenderN/S
Vehicle Speed
SensorBK Rear of
Transmission3
Windshield Washer
Pump MotorBK Bottom of
Reservior6
Wiper Motor BK Right Side of
Cowl PanelN/S
PL8W - 90 CONNECTOR/GROUND LOCATIONS 8W - 90 - 3
DESCRIPTION AND OPERATION (Continued)
Downloaded from www.Manualslib.com manuals search engine Fig. 3 Transmission Connections
PL8W - 90 CONNECTOR/GROUND LOCATIONS 8W - 90 - 5
DESCRIPTION AND OPERATION (Continued)