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1
SPEAKER DOOR
FRONT
RIGHT LEFT
FRONT
DOOR
SPEAKER
1
2
C142C25C13C2
RADIO
LEFT
FRONT
DOOR
(-) (+) DOOR FRONTLEFT
RIGHT
FRONT
DOOR
(+)RIGHT
FRONT
DOOR
(-) X53
22
DG
X53
22
DG
X55
22
BR/RD
X55
22
BR/RD
X54
22
VT
X54
22
VT
X56
22
DB/RD
X56
22
DB/RD
1516C2311516C205
Z9
14
BK
1
22
1
(PREMIUM) SPEAKER
PANEL
INSTRUMENT
LEFT RIGHT
INSTRUMENT
PANEL
SPEAKER
(PREMIUM)
GROUND
X56
22
DB/RDX54
22
VTX55
22
BR/RDX53
22
DG
G201
(8W-15-5)
PL-RHD8W-47 AUDIO SYSTEM 8W - 47 - 3
PLR04702978W-1
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2
SPEAKER REAR
RIGHT LEFT
REAR
SPEAKER
21
C126C13C17C1
RADIO
LEFT
REAR
(-) (+) REARLEFT RIGHT
REAR
(+)RIGHT
REAR
(-) X51
22
BR/YL
X51
22
BR/YL
X57
22
BR/LB
X57
22
BR/LB
X52
22
DB/WT
X52
22
DB/WT
X58
22
DB/OR
X58
22
DB/OR
513C230715C230
Z9
14
BK
G201
ANTENNA
INPUT
ANTENNA
(8W-15-5)
8W - 47 - 4 8W-47 AUDIO SYSTEMPL-RHD
978W-1PLR04703
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Downloaded from www.Manualslib.com manuals search engine 8W-47 AUDIO SYSTEMS
INDEX
page page
DESCRIPTION AND OPERATION
HELPFUL INFORMATION.................. 5
RADIO ILLUMINATION.................... 5RADIO MEMORY........................ 5
RADIO OPERATION...................... 5
SPEAKERS............................. 5
DESCRIPTION AND OPERATION
RADIO OPERATION
When the ignition switch is in either the ACCES-
SORY or RUN position, it connects circuit A1 from
the Power Distribution Center (PDC) to circuit A31.
Circuit A31 powers a bus bar in the fuse block. The
bus bar feeds two circuits, one of which is circuit
X12. Circuit X12 powers the radio. A 10 amp fuse, in
cavity 16 of the fuse block, protects circuit X12.
Circuit Z9 supplies the ground path for the radio.
The grounding point for circuit Z9 is the instrument
panel right center support.
RADIO MEMORY
Circuit M1 from the Power Distribution Center
(PDC) supplies power for the radio memory. The cir-
cuit contains the Ignition Off Draw (IOD) fuse. The
IOD fuse is removed during vehicle shipping to pre-
vent excessive battery draw.
RADIO ILLUMINATION
When the parking lamps or headlamps are ON, cir-
cuits E2 and L7 power the radio illumination lamps
and park lamps. Circuit E2 feeds the illumination
lamp. Circuit L7 feeds the park lamps of the radio.
Circuit F33 feeds circuit L7.
A 4 amp fuse, in cavity 12 of the fuse block, pro-
tects circuit E2. A 15 amp fuse, in cavity 2 of the fuse
block, protects circuits L7 and F33.
SPEAKERS
Circuit X53 feeds the speaker in the left front door.
Circuit X55 is the return from the speaker to the
radio. On the premium system the X53 and X55 cir-
cuits are connected in with the instrument panel
speaker.
Circuit X54 feeds the speaker in the right front
door. Circuit X56 is the return from the speaker to
the radio. On the premium system the X54 and X56
circuits are connected in with the instrument panel
speaker.
Circuit X51 feeds the left rear speaker. Circuit X57
is the return from the speaker to the radio.Circuit X52 feeds the right rear speaker. Circuit
X58 is the return from the speaker to the radio.
HELPFUL INFORMATION
²Circuit M1 also powers the vanity lamps, glove
box lamp, time delay relay, dome lamps, underhood
lamp, cargo lamp, and power mirrors.
²If the radio does not operate, check for blown
fuses in circuits A1 and X12.
²Circuits A3, and F33 feed the L7 circuit.
²If the radio illumination lamps do not operate,
check for blown fuses in circuits E2, F33, and A3.
PL8W - 47 AUDIO SYSTEMS 8W - 47 - 5
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Downloaded from www.Manualslib.com manuals search engine 8W-48 REAR WINDOW DEFOGGER
INDEX
page
SCHEMATICS AND DIAGRAMS........................................................... 1
DESCRIPTION AND OPERATION.......................................................... 3
Component Page
Fuse 5 (FB).........................8W-48-2
Fuse 8 (PDC)........................8W-48-2
Fuse 9 (FB).........................8W-48-2
Fuse Block.........................8W-48-2
G201..............................8W-48-2
G301..............................8W-48-2
Headlamp Switch....................8W-48-2Component Page
Power Distribution Center.............8W-48-2
Rear Window Defogger................8W-48-2
Rear Window Defogger Switch..........8W-48-2
S205..............................8W-48-2
S210..............................8W-48-2
S211 ..............................8W-48-2
Switch Illumination..................8W-48-2
8W - 48 - 2 8W - 48 REAR WINDOW DEFOGGERPL
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30A
FUSE
8
BATT A0
POWER
DISTRIBUTION
CENTER
FUSE
BLOCK
299
4A
FUSE
95FUSE10A
5
25
2 HEAD 1 PARK
0 OFF
SWITCH
HEADLAMP
1
E1
20
TN
RUN A22
5
314
2 TIMER
SWITCH DEFOGGER
WINDOW
REAR
E2
20
OR
E2
22
OR
F20
20
WT
F20
22
WT
S210 S211
A4
14
BK/RD
A4
14
BK/RD
4C102
C15
14
BK/WT
C15
14
BK
16C230
G301
Z1
14
BK
G201
S205
Z2
22
BK/LG
Z2
20
BK/LG
DEFOGGER WINDOW
REAR
0 OFF
BATT F33
2
1 0
1 01 ON
SWITCH
ILLUMINATION
(8W-10-7)(8W-10-4)
(8W-11-2)
(8W-11-11) (8W-11-8)(8W-50-2)
(8W-11-11) (8W-11-8)
(8W 15 9)(8W 15 5)
(8W-15-5)(8W-10-4)
(8W-11-4)
(8W-10-6)
8W - 48 - 2 8W-48 REAR WINDOW DEFOGGERPL-RHD
PL8W - 48 REAR WINDOW DEFOGGER 8W - 48 - 3
DESCRIPTION AND OPERATION (Continued)
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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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