Downloaded from www.Manualslib.com manuals search engine 8W-48 REAR WINDOW DEFOGGER
DESCRIPTION AND OPERATION
REAR WINDOW DEFOGGER
The Rear Window Defogger system is powered by a
40 amp fuse located in the Power Distribution Center
(PDC) on circuit A4. This circuit is HOT at all times.
The system is also powered by a 10 amp fuse located
in cavity 8 of the fuse block, this fuse is HOT in the
RUN position only.
When the operator presses the rear window defog-
ger switch the contacts internal to the switch CLOSE
and the timer starts. When the switch is released the
timer circuity keeps the relay energized for the spec-
ified time.
Voltage is passed through the switch on the A4 cir-
cuit to the C15 circuit and then to the rear window
defogger grid. The grid consists of two bus bars and
grid lines that form a parallel circuit. When voltage
is passed through the grid, the grid lines heat up and
heat the rear window.
Grounding for the rear window defogger switch is
provided on the Z2 circuit and terminates at the
instrument panel right center support. The grid uses
the grounding point at the rear body in the right
wheel house.
When the system is in operation, a L.E.D. located
in the switch, indicates to the operator the system is
functioning. The switch is also illuminated when the
headlamp switch is in the PARK or ON position.
Power for the illumination circuit comes from the 4
amp fuse, located in cavity 12 of the fuse block, on
the E2 circuit.
HELPFUL INFORMATION
²Check the 40 amp fuse in the Power Distribu-
tion Center (PDC).
²Check the 10 amp fuse in cavity 8 of the fuse
block.
²Check for broken gird lines on the window.
²Check for a broken buss bar or disconnected
leads at the rear window.
²Check for a good ground at the rear body ground
located in the right rear wheel house.
PL8W - 48 REAR WINDOW DEFOGGER 8W - 48 - 3
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INDEX
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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
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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-60 POWER WINDOWS
INDEX
page
SCHEMATICS AND DIAGRAMS........................................................... 1
DESCRIPTION AND OPERATION.......................................................... 3
Component Page
Circuit Breaker......................8W-60-2
Fuse Block.........................8W-60-2
G203..............................8W-60-2
Left Power Window Motor..............8W-60-2
Left Power Window Switch.............8W-60-2Component Page
Master Power Window Switch...........8W-60-2
Right Power Window Motor............8W-60-2
S138..............................8W-60-2
S310..............................8W-60-2
8W - 60 - 2 8W - 60 POWER WINDOWSPL
Downloaded from www.Manualslib.com manuals search engine RUN A22
30A BREAKER
CIRCUIT
BLOCK
FUSE
4241
165
3
4
1 DOWN SWITCH
WINDOW
POWER
MASTER
2 UP
2 122
1
F21
14
TN
F21
14
TN 7
C205
2 UP LEFT
POWER
WINDOW
SWITCH
1 DOWN
4
5 1
2
1
2 Z8
14
BR/VT
Z8
14
BK/VT
Z8
14
BK/VT 4
C205
S310
G203
12
M
Q11
14
LBQ21
14
VT
MOTOR WINDOW
POWER
RIGHTM
21
LEFT
POWER
WINDOW
MOTOR
Q12
14
BRQ22
14
VT
Q16
14
BR/WT
Q16
14
BR/WT
Q16
14
BR/WT
13
13
Q26
14
VT/WT
Q26
14
VT/WT
Q26
14
VT/WT
14
C20514
F21
14
TN
F21
14 7
C231
3
TN
S138
F21
14
TN
(8W-11-10)(8W-11-2) (8W-10-6)
(8W-15-6)
(8W-15-6)(8W-11-10)
8W - 60 - 2 8W-60 POWER WINDOWSPL-RHD
PL8W - 60 POWER WINDOWS 8W - 60 - 3
DESCRIPTION AND OPERATION (Continued)
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INDEX
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DESCRIPTION AND OPERATION
HELPFUL INFORMATION.................. 3POWER WINDOWS...................... 3
DESCRIPTION AND OPERATION
POWER WINDOWS
The power window system is supplied power from
the 30 amp circuit breaker located behind the fuse
block. Power for the circuit breaker is supplied on
circuit A22 from the ignition switch. This circuit is
HOT when the ignition switch is in the RUN posi-
tion.
Power for the A22 circuit is supplied by the A2 cir-
cuit which is HOT at all times and protected by a
40-amp fuse located in the Power Distribution Center
(PDC). The A22 is spliced and supplies power for the
fuses that protect the Airbag, A/C-Heater blower
motor, turn signals, and the heated rear window.
Circuit F21 connects, from the circuit breaker, to
both window switches. This is the feed for the
switches. Both switches use a BUS bar to provide
power for the different functions of the switch.
The ground path for the system is through master
window switch on the Z8 circuit. The grounding point
is located at the instrument panel left center support
brace.
MASTER WINDOW SWITCH (LEFT WINDOW
OPERATION)
When the window switch is moved to the window
DOWN position, voltage is supplied on the F21 cir-
cuit through the CLOSED contacts in the switch to
the Q21 circuit. The Q21 circuit connects from the
switch to the left front window motor. Grounding is
provided on circuit Q11 from the motor back to the
switch. The ground is passed through the switch to
the Z8 circuit. The Z8 circuit goes to its grounding
point.
When window UP operation is selected, the power
and ground circuits are reversed. Circuit Q11 is the
feed and circuit Q21 is the ground.
MASTER WINDOW SWITCH (RIGHT WINDOW
OPERATION)
When the window switch is moved to the window
DOWN position, voltage is supplied on the F21 cir-
cuit through the CLOSED contacts in the switch to
the Q26 circuit. The Q26 circuit connects from the
master switch to the right window switch. A BUS barinternal to the right switch passes the voltage
through the switch to circuit Q22. Circuit Q22 con-
nects from the switch to the right window motor.
Grounding is provided on circuit Q12 from the motor
back to the right switch.
The ground is passed through the switch on a BUS
bar to circuit Q16. Circuit Q16 then goes to the mas-
ter switch. The ground is passed through the switch
to the Z8 circuit. The Z8 circuit attaches to its
grounding point.
When window UP operation is selected, the power
and ground circuits are reversed. Circuits Q12 and
Q16 are the feeds and circuits Q22 and Q26 are the
grounds.
RIGHT WINDOW SWITCH OPERATION
When the window switch is moved to the window
DOWN position, voltage is supplied on the F21 cir-
cuit through the CLOSED contacts in the switch to
the Q22 circuit. The Q22 circuit connects from the
switch to the right front window motor. Grounding is
provided on circuit Q12 from the motor back to the
switch. The ground is passed through the switch to
the Q16 circuit. The Q16 circuit connects from the
right switch to the master switch. Ground is passed
through the master switch to the Z8 circuit. The Z8
circuit goes to its grounding point.
When window UP operation is selected, the power
and ground circuits are reversed. Circuit Q12 is the
feed and circuit Q22 is the ground.
HELPFUL INFORMATION
²Check the 40 amp fuse located in the PDC.
²Check the 30 amp circuit breaker located behind
the fuse block.
²Check the ground at the instrument panel left
center support.
PL8W - 60 POWER WINDOWS 8W - 60 - 3
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DESCRIPTION AND OPERATION
HELPFUL INFORMATION.................. 5POWER FOLDING MIRRORS............... 5
POWER MIRRORS....................... 5
DESCRIPTION AND OPERATION
POWER MIRRORS
Power for the power mirror switch is supplied on
circuit F121. This circuit is protected by a 15 amp
circuit breaker located in the right front door. Power
for the circuit breaker is supplied by circuit F21.
The F21 circuit is protected by a 30 amp circuit
breaker. This circuit breaker also supplies power to
the power windows.
The power mirror switch has a right and left posi-
tion. Moving the switch to either of these positions
changes the voltage path internal to the switch (ie.
changes polarity at the motors).
When the switch is moved to the RIGHT position
and mirror movement UP is selected, voltage is sup-
plied to the mirror on circuit P92 and the ground
path is supplied on circuit P90. The P90 circuit con-
nects from the mirror to the normally CLOSED con-
tacts in the mirror relay located in the right door.
When the right mirror DOWN movement is
selected voltage is supplied through the switch to cir-
cuit P110. The P110 circuit connects from the switch
to the power mirror relay located in the door, coil
side. Power on the coil side causes the contacts in the
relay to CLOSE connecting circuits F121 and P90.
The P90 circuit then supplies power to the DOWN
side of the motor. Ground for the motor is supplied
on circuit P92 back to the switch and then connects
to circuit Z8. The Z8 circuit connects from the switch
to its grounding point on the right instrument panel
center support.
If right door mirror movement LEFT is selected
voltage is supplied through the P94 circuit and the
ground is passed through circuit P91. When left mir-
ror RIGHT movement is selected the power and
ground are reversed.
When the switch is moved to the LEFT position
and mirror movement UP is selected, voltage is sup-
plied to the mirror on circuit P93 and the ground
path is supplied on circuit P90. The P90 circuit con-
nects from the mirror to the normally CLOSED con-
tacts in the mirror relay located in the right door.
When the left mirror DOWN movement is selected
voltage is supplied through the switch to circuit P110.
The P110 circuit connects from the switch to the powermirror relay located in the door, coil side. Power on the
coil side causes the contacts in the relay to CLOSE con-
necting circuits F121 and P90. The P90 circuit then
supplies power to the DOWN side of the motor. Ground
for the motor is supplied on circuit P93 back to the
switch and then connects to circuit Z8. The Z8 circuit
connects from the switch to its grounding point on the
right instrument panel center support.
If left door mirror movement LEFT is selected volt-
age is supplied through the P95 circuit and the
ground is passed through circuit P91. When left mir-
ror RIGHT movement is selected the power and
ground are reversed.
POWER FOLDING MIRRORS
Power for the power mirror switch is supplied on
circuit F121. This circuit is protected by a 15 amp
circuit breaker located in the right front door. Power
for the circuit breaker is supplied by circuit F21.
The F21 circuit is protected by a 30 amp circuit
breaker. This circuit breaker also supplies power to
the power windows.
When the operator selects mirrors RETRACT volt-
age is supplied on circuit F121 through the CLOSED
contacts in the switch to circuit P110. Circuit P110
connects to the power mirror relay coil side.
Voltage on the coil side of the relay causes the con-
tacts in the relay to CLOSE connecting circuits F121
and P90. The P90 circuit connects from the relay to
the power mirrors. Ground for the motors is supplied
on circuit P99 back to the power mirror switch. Inter-
nal to the switch the P99 circuit connects to the Z8
ground circuit.
When the operator selects the EXTEND function
power is supplied on circuit F121 through the
CLOSED contacts in the switch to circuit P99. The
P99 circuit connects to the power mirror motors.
Ground for the motors is supplied on circuit P90.
HELPFUL INFORMATION
²Check the 30 amp circuit breaker located behind
the fuse block
²Check the 15 amp circuit breaker located in the
right door
²Check the grounding point at the instrument
panel right center support
PL8W - 62 POWER MIRRORS 8W - 62 - 5