Downloaded from www.Manualslib.com manuals search engine except, the C5 circuit is used for the M1 speed and
circuit C6 is used for M2 speed operation.
Blower motor HIGH speed operation is accom-
plished on the C7 circuit which supplies battery volt-
age directly to the blower motor. There are no
resistors used in the HIGH speed mode.
HELPFUL INFORMATION
²Check the 30 amp fuse located in the PDC for
the radiator fan motor
²Check the 15 amp fuse located in cavity 10 of
the fuse block for the A/C compressor clutch relay
²Check the 10 amp fuse located in the PDC for
the A/C compressor clutch relay.
²Check the 25 amp fuse located in cavity 7 of the
fuse block for the blower motor.
²Check the right headlamp ground located at the
right fender side shield.
²Check the left headlamp ground located on the
left side of the radiator closure panel.
²On vehicles equipped with A/C check the refrig-
erant level. The system will not operate with a low
level of refrigerant.
PL8W - 42 AIR CONDITIONING-HEATER 8W - 42 - 7
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
Downloaded from www.Manualslib.com manuals search engine Circuit L2 connects to the multi- function switch and
feeds the L4 circuit (for low beam operation). The L4
circuit connects to a bus bar in the fuse block. Cir-
cuits L43 and L44 connect to the bus bar in fuse
block and power the low beam headlamps. Circuit
L43 supplies voltage to the left headlamp. Circuit
L44 supplies voltage to the right headlamp. Both the
L43 and L44 circuits have separate 10 amp fuses
located in fuse block. Fuse 17 protects circuit L43,
and fuse 18 protects circuit L44.
When the operator selects high beam operation
with the turn signal stalk of the multi-function
switch, circuit L2 connects to the L3 Circuit L3 pow-
ers high beam operation.
HEADLAMP GROUND
Although circuit Z1 provides ground for the right
and left headlamps it has different termination
points for both. For the right headlamp the Z1 circuit
terminates at the right inner fender shield. For the
left headlamp the Z1 circuit terminates at the left
side of the radiator closure panel.
HELPFUL INFORMATION
²Check for a blown fuse in cavity 17 for L43 and
cavity 18 for L44.
²Check the 40 amp fuse located in the PDC.
²The headlamp switch has a 24 amp internal cir-
cuit breaker.
²For the left front parking lamp, turn signal, side
marker lamp and left headlamp, the Z1 circuit
grounding 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.
HEADLAMP LEVELING MOTORS
The headlamp leveling system used in this vehicle
uses a variable position switch located in the instru-
ment panel along with headlamp leveling motors
located at the headlamps.
Power for the switch and the leveling motors is
supplied on circuit L43. This circuit is HOT when the
headlamp switch is in the ON position and the oper-
ator has selected LOW beam operation. In addition,circuit L43 is protected by a 10 amp fuse located in
the fuse block and is the feed for the left LOW beam
headlamp.
Ground for the switch is supplied on circuit Z1.
When the operator moves the switch, power is sup-
plied on circuit L13 from the switch to the headlamp
leveling motors. Ground for the leveling motors is
supplied on circuit Z1 and has the same termination
point as the respective headlamps.
The headlamp leveling switch also has a lamp
located in it for night illumination. Power for the
lamp is supplied on circuit E2. The E2 circuit is HOT
when the operator has turned the headlamp switch
to the PARK or ON position. The E2 circuit is pro-
tected by a 4 amp fuse located in the fuse block.
FOG LAMPS (FRONT)
The fog lamp system in this vehicle uses a switch
located in the instrument panel along with a relay
located in the Power Distribution Center (PDC).
Power for the switch is supplied on circuit L7. This
circuit is the feed for the front and rear parking
lamps and is HOT when the headlamp switch is in
the PARK position.
Power for the contact side of the relay is supplied
on circuit F61. This circuit is HOT at all times and
protected by a 20 amp fuse in the PDC. Ground for
the coil side of the relay is supplied in circuit Z1.
When the operator turns the lamps ON by closing
the switch, power flows on circuit L7 through the
switch to circuit L35. Circuit L35 connects from the
switch to the coil side of the fog lamp relay. With this
input the contacts in the fog lamp relay CLOSE con-
necting circuits F61 and L39.
Circuit L39 connects from the relay to the fog
lamps. Ground for the lamps is supplied on circuit
Z1.
HELPFUL INFORMATION
²Check the 20 amp fuse located in the PDC for
the fog lamps
²Check the lamp filament
²Check the grounding points for the lamps,
switch and relay
8W - 50 - 8 8W - 50 FRONT LIGHTINGPL
DESCRIPTION AND OPERATION (Continued)
Downloaded from www.Manualslib.com manuals search engine 8W-52 TURN SIGNALS
INDEX
page page
DESCRIPTION AND OPERATION
HAZARD FLASHERS..................... 5TURN SIGNALS......................... 5
DESCRIPTION AND OPERATION
TURN SIGNALS
Voltage for the turn signals flows from the Power
Distribution Center (PDC) to the ignition switch on
circuit A2. With the key in the RUN position, the
ignition switch connects voltage from the A2 circuit
to the A22 circuit. A 40 amp fuse in the PDC protects
the A2 and A22 circuits.
Circuit A22 connects to a bus bar in the fuse block.
L5 is one of the circuits fed by the bus bar. Circuit
L5 contains a 10 amp fuse and supplies voltage to
the multi-function switch. The multi- function switch
supplies voltage to the combination flashing unit on
circuit L55. Voltage leaves the combination flashing
unit on circuit L32 and flows to the multi-function
switch connector.
RIGHT TURN SIGNAL
When the operator selects the right turn signal,
the multi-function connects power from circuit L32 to
circuits L60 and L62. Circuit L62 connects to the
multi-function switch and feeds the right rear turn
signal/hazard flasher/stop lamp.
Circuit L60 connects to the multi-function switch
and feeds the right front turn signal/hazard flasher
lamp and side marker lamp. Circuit L60 also splices
to power the turn signal indicator lamp on the
instrument cluster.
LEFT TURN SIGNAL
When the operator selects the left turn signal, the
multi-function connects power from circuit L32 to cir-
cuits L61 and L63. Circuit L63 connects to the multi-
function switch and feeds the left rear turn signal/
hazard flasher/stop lamp.
Circuit L61 connects to the multi-function switch
and feeds the left right front turn signal/hazard
flasher lamp and side marker lamp. Circuit L61 also
splices to power the turn signal indicator lamp on the
instrument cluster.
GROUND CIRCUIT
Circuit Z1 provides ground for all the turn signal
lamps, although the it has different grounding pointsfor each turn signal circuit. Circuit Z2 provides the
ground path for the combination flashing unit.
HELPFUL INFORMATION
²For the left front turn signal/hazard flasher
lamp, the Z1 circuit grounding point is the left side of
the radiator closure panel.
²For the right front turn signal/hazard flasher
lamp, the Z1 circuit grounding point is in the right
fender side shield.
²For the left rear turn signal/hazard flasher/stop
lamp, the Z1 circuit grounding point is in the left
rear wheel well.
²For the right rear turn signal/hazard flasher/
stop lamp, the Z1 circuit grounding point is in the
right rear wheel well.
²Circuit Z1 also supplies ground for the head-
lamps, parking lamps, rear license plate lamp,
back-up lamps and side marker lamps.
²The grounding point for circuit Z2 is the instru-
ment panel right center support. Circuit Z2 supplies
ground for the combination flashing unit.
²A 10 amp fuse, in cavity 6 of the fuse block, pro-
tects circuit L5.
²A 40 amp fuse in the PDC protects the A2 and
A22 circuits.
²The bus bar in the fuse block that connects to
circuit A22 and feeds circuit L5 for the turn signals
also powers three other fuse protected circuits. The
other circuits are C1, F20 and F25.
HAZARD FLASHERS
Circuit L9 from the Power Distribution Center
(PDC) supplies battery voltage for the hazard flash-
ers. A 10 amp fuse in the PDC protects circuit L9.
Circuit L9 connects to the multi-function switch.
With the hazard flashers ON, the multi-function
switch connects circuits L9 and L55.
Circuit L55 feeds the combination flashing unit.
Circuit Z2 provides ground for the flashing unit.
From the flashing unit, circuit L32 connects to the
multi-function switch. With the hazard flashers ON,
the multi-function switch connects circuit L32 to cir-
cuits L60, L61, L62, and L63.
PL8W - 52 TURN SIGNALS 8W - 52 - 5
Downloaded from www.Manualslib.com manuals search engine Circuit L60 supplies voltage to the right front turn
signal/hazard lamp. The L60 circuit splices to the
instrument cluster to power the right indicator lamp.
Circuit L61 supplies voltage to the left front turn
signal/hazard lamp. The L61 circuit splices to the
instrument cluster to power the left indicator lamp.
Circuit L62 supplies voltage to the right rear turn
signal/hazard flasher/stop lamp.
Circuit L63 supplies voltage to the left rear turn
signal/hazard/flasher/stop lamp.
GROUND CIRCUITS
Circuit Z3 provides ground for the instrument clus-
ter indicator lamps. The termination point for circuit
Z3 is the instrument panel left center support.
Circuit Z1 provides ground for all the turn signal/
hazard lamps, although the it has different ground-
ing points for each circuit. Circuit Z2 provides the
ground path for the combination flashing unit.
HELPFUL INFORMATION
²For the left front turn signal/hazard flasher
lamp the Z1 circuit grounding point is the left side of
the radiator closure panel.²For the right front turn signal/hazard flasher
lamp the Z1 circuit grounding point is in the right
fender side shield.
²For the left rear turn signal/hazard flasher/stop
lamp the Z1 circuit grounding point is in the left rear
wheel well.
²For the right rear turn signal/hazard flasher/
stop lamp the Z1 circuit grounding point is in the
right rear wheel well.
²Circuit Z1 also supplies ground for the head-
lamps, parking lamps, rear license plate lamp,
back-up lamps and side marker lamps.
²The grounding point for circuit Z2 is the instru-
ment panel right center support. Circuit Z2 supplies
ground for the combination flashing unit.
8W - 52 - 6 8W - 52 TURN SIGNALSPL
DESCRIPTION AND OPERATION (Continued)
Downloaded from www.Manualslib.com manuals search engine Component Page
Left Power Mirror...................8W-80-23
Left Power Window Switch............8W-80-23
Left Rear Door Lock Motor............8W-80-23
Left Rear Fog Lamp.................8W-80-23
Left Rear Speaker...................8W-80-23
Left Rear Wheel Speed Sensor.........8W-80-23
Left Repeater Lamp.................8W-80-24
Left Tail/Stop Lamp.................8W-80-24
Left Turn Signal Lamp...............8W-80-24
Map/Reading Lamps.................8W-80-24
Master Power Window Switch..........8W-80-24Component Page
Park/Neutral Position Switch (ATX).....8W-80-25
Passenger Side Airbag................8W-80-25
Power Folding Mirror Relay...........8W-80-25
Power Mirror Fuse Holder............8W-80-25
Power Mirror Switch - C1.............8W-80-25
Power Mirror Switch - C2.............8W-80-26
Power Steering Pressure Switch........8W-80-26
Power Sunroof Motor.................8W-80-26
Powertrain Control Module - C1........8W-80-26
Powertrain Control Module - C2........8W-80-27
PRNDL Lamp......................8W-80-28
Radiator Fan Motor..................8W-80-28
Radio - C1.........................8W-80-28
Radio - C2.........................8W-80-29
Rear Fog Lamp Switch...............8W-80-29
Rear Window Defogger Switch.........8W-80-29
Right Airbag Impact Sensor...........8W-80-29
Right Back-Up Lamp.................8W-80-29
Right Door Lock Switch...............8W-80-30
Right Door Window Motor.............8W-80-30
Right Fog Lamp....................8W-80-30
Right Front Door Lock Motor..........8W-80-30
Right Front Door Speaker.............8W-80-30
Right Front Wheel Speed Sensor........8W-80-31
Right Headlamp....................8W-80-31
Right Headlamp Leveling Motor........8W-80-31
PL8W - 80 CONNECTOR PIN-OUTS 8W - 80 - 3
DESCRIPTION AND OPERATION (Continued)
Downloaded from www.Manualslib.com manuals search engine 978W-1
PL-RHD 8W - 80 - 28 8W-80 CONNECTOR PIN-OUTS
PLR08028
*2.0L (SOHC) ENGINEl2.0L (DOHC) ENGINE
CAV CIRCUIT FUNCTION
25 Ð Ð
26 K2 20TN/DB*ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
26 K2 20TN/BKlENGINE COOLANT TEMPERATURE SENSOR SIGNAL
27 Ð Ð
28 Ð Ð
29 Ð Ð
30 K41 20BK/DG UPSTREAM HEATED OXYGEN SENSOR SIGNAL
31 Ð Ð
32 K24 20GY/BK CRANKSHAFT POSITION SENSOR SIGNAL
33 K44 20TN/YL CAMSHAFT POSITION SENSOR SIGNAL
34 Ð Ð
35 K22 20OR/DB THROTTLE POSITION SENSOR SIGNAL
36 K1 18DG/RD MANIFOLD ABSOLUTE PRESSURE SENSOR SIGNAL
37 K21 18BK/RD INTAKE AIR TEMPERATURE SENSOR SIGNAL
38 C20 18BR A/C SWITCH SENSE
39 Ð Ð
40 K35 20GY/YL EXHAUST GAS RECIRCULATION SOLENOID CONTROL
(CONTINUED)
CAV CIRCUIT FUNCTION
1 E2 22OR FUSED PANEL LAMPS DIMMER SWITCH SIGNAL
2 Z3 20BK/OR GROUND
BLACK
1 2
PRNDL
LAMP
CAV CIRCUIT FUNCTION
1 C25 14LG RADIATOR FAN RELAY OUTPUT
2 Z1 14BK GROUND
RADIATOR
FAN MOTOR
CAV CIRCUIT FUNCTION
1Ð Ð
2 X51 22BR/YL LEFT REAR SPEAKER (Ð)
3 X52 22DB/WT RIGHT REAR SPEAKER (+)
4 X53 22DG LEFT FRONT SPEAKER (+)
5 X54 22VT RIGHT FRONT SPEAKER (+)
6 X57 22BR/LB LEFT REAR SPEAKER (Ð)
7 X58 22DB/OR RIGHT REAR SPEAKER (Ð)
1
BLACK
2
RADIO - C1
BLACK
7
1
Downloaded from www.Manualslib.com manuals search engine 978W-1
8W - 80 - 33 PL-RHD 8W-80 CONNECTOR PIN-OUTS
PLR08033
STOP LAMP
SWITCH 61
CAV CIRCUIT FUNCTION
1 K29 20WT/PK STOP LAMP SWITCH SENSE
2 Z12 20BK/TN GROUND
3Ð Ð
4Ð Ð
5 L50 20WT/TN STOP LAMP SWITCH OUTPUT
6 F32 18PK/DB FUSED B(+)
GRAY
CAV CIRCUIT FUNCTION
1 Z1 18BK GROUND
2 K173 20DG RADIATOR FAN RELAY CONTROL
3 C25 14LG ENGINE FAN FEED
4 A16 14GY RADIATOR FAN RELAY FEED
SOLID STATE FAN RELAY
CAV CIRCUIT FUNCTION
1 L60 18TN RIGHT TURN SIGNAL
2 Z1 18BK GROUND
RIGHT REPEATER
LAMP
CAV CIRCUIT FUNCTION
1 L50 18WT/TN TAIL/STOP
2 L7 18BK/YL TAIL/STOP
3 Z1 18BK GROUND
RIGHT TAIL/STOP LAMP
CAV CIRCUIT FUNCTION
1 L63 18DG/RD RIGHT TURN SIGNAL LAMP FEED
2 Z1 18BK GROUND
RIGHT TURN SIGNAL LAMP
2 1
NATURAL
3 1 2
BLACK
2 1
GRAY
BLACK
1 4