Page 94 of 256
Downloaded from www.Manualslib.com manuals search engine 9FUSE4A
9
29BLOCK FUSE
2 HEAD
1 PARK
0 OFF
SWITCH
HEADLAMP
1
E1
20
TN
E2
20
OR
E2
22
OR
S210
C2
92C1
3
S209
CLUSTER INSTRUMENT
BATT F33
L3
14
RD/OR
L3
16
RD/OR
2
1 0
CLUSTER
ILLUMINATION
LAMPSHIGH
BEAM
INDICATOR
LAMP
SWITCH HORN
OPTICAL
AND
DIMMER
HEADLAMP
(8W-11-1)(8W-11-2) (8W-50-2)
(8W-11-11)(8W-50-3) (8W-11-4)
(8W-50-2)
8W - 40 - 2 8W-40 INSTRUMENT CLUSTERPL-RHD
978W-1PLR04001
Page 95 of 256
Downloaded from www.Manualslib.com manuals search engine 13FUSE10A
14
13
BATT A0
SPEEDOMETERCHIMELOW
FUEL
LEVEL
INDICATOR
LAMP
TACHOMETER
DRIVERODOMETER
DRIVER
000000
TACHOMETERODOMETER
M1
18
PK
M1
22
PK
S203
13C103
7366 TACHOMETER
SIGNAL
POWERTRAIN
CONTROL
MODULE
G21
20
GY/LB
G21
22
GY/LB
G7
20
WT/OR
G7
22
WT/OR
85C103
G7
20
WT/ORG7
18
WT/OR
3
2C160VEHICLE
SPEED
SENSOR
C2
5
HEADLAMP
SWITCH
0 OFF
1 PARK
2 HEAD
C110C17C16
VEHICLE
SPEED
SENSOR
SIGNAL
0
12
6 51 2
KEY-IN
SWITCH
LEFT
FRONT
DOOR
JAMB
SWITCH
M1
22
PK
POWER
DISTRIBUTION
CENTER
INSTRUMENT
CLUSTER
G26
20
LB
G26 20LB
G16 20BK/LBG16
20
BL/LB
9C230
BL/LB20 G16
C1 C1
SIGNAL SENSORSPEED VEHICLE
(8W-10-8)
(8W-10-8)(8W-30-8)
(8W-30-11)(8W-30-8)
(8W-50-2) (8W-10-4) (8W-10-4)
PL-RHD8W-40 INSTRUMENT CLUSTER 8W - 40 - 3
PLR04002978W-1
Page 98 of 256
Downloaded from www.Manualslib.com manuals search engine ST-RUN A21
FUEL
LEVEL
SENSOR
SIGNAL
INSTRUMENT
CLUSTER
G5
20
DB/WT
G20
22
VT/YL
G20
20
VT/YL
G20
20
VT/YL
G4
20
DB
G4
20
DB
Z3
16
BK/OR
Z3
14
BK/OR
G6
22
GY
G6
20
GY
G6
18
GY
S201
SWITCH PRESSURE
OIL
ENGINE
BLOCK
FUSE
G4
20
DB
G204
8C161
4C103
1C28C1
6C230
3C160
23
10C25C1
1
10
31
POWERTRAIN
CONTROL
MODULE
FUEL
PUMP
MODULE SENSOR TEMPERATURE
COOLANT
ENGINE
3G4
18
DB
C1609
C10311
BK/PK20 G3
BK/PK22 G3
BK/PK20 G3
MODULE CONTROL
POWERTRAIN
8
3C2
CHECK
ENGINE
LAMP
DRIVER
C
6
C160
7C103
4C2
5A FUSE
11
SENSOR
SIGNAL
ENGINE
COOLANT
TEMPERATURE
GAUGELAMP ENGINE
CHECK
FUEL
GAUGE
LAMP PRESSURE
OIL
LOW FUEL
TANK
SENDING
UNIT
DB/WT20 G5
6
NO
CONNECTIONG4
20
DB
7C105
C2
C2
(8W-15-7)(8W-11-2)
(8W-15-7)(8W-30-10)
(8W-30-10) (8W-30-7)
(8W-30-11) (8W-11-10)(8W-10-12)
8W - 40 - 6 8W-40 INSTRUMENT CLUSTERPL-RHD
978W-1PLR04005
Page 99 of 256
Downloaded from www.Manualslib.com manuals search engine 8W-40 INSTRUMENT CLUSTER
INDEX
page page
DESCRIPTION AND OPERATION
AIRBAG WARNING LAMP.................. 8
ANTI-LOCK WARNING LAMP............... 9
BRAKE WARNING INDICATOR LAMP......... 8
CHARGE INDICATOR LAMP................ 8
ENGINE COOLANT TEMPERATURE GAUGE . . . 7
FUEL GAUGE........................... 7
HEADLAMP ON CHIME.................... 8
HELPFUL INFORMATION.................. 9
HIGH BEAM INDICATOR LAMP.............. 8
INSTRUMENT CLUSTER.................. 7KEY-IN CHIME.......................... 8
LOW FUEL LAMP........................ 8
LOW OIL PRESSURE LAMP................ 8
ODOMETER............................ 8
RIGHT AND LEFT TURN
SIGNAL INDICATORS................... 8
SEAT BELT WARNING INDICATOR........... 8
SERVICE ENGINE SOON LAMP............. 8
SPEEDOMETER......................... 7
TACHOMETER.......................... 7
DESCRIPTION AND OPERATION
INSTRUMENT CLUSTER
The Instrument Cluster, located on the right side
of the instrument panel, provides the operator with
gauges and warning lamps relating to vehicle opera-
tion. All gauges in the standard and optional cluster
are magnetic type and logic driven.
Battery voltage for the clusters warning lamps and
gauges is provided on the G5 circuit. This circuit con-
nects from the fuse block and is protected bya5amp
fuse located in cavity 11. The cluster is powered only
when the ignition switch is in the START or RUN
position. The cluster is also powered on initial driv-
er's door opening.
Illumination lamps, internal to the cluster, receive
battery voltage on the E2 circuit from the 4 amp fuse
located in cavity 12 of the fuse block. This circuit is
HOT only when the headlamp switch is in the ON
position. Grounding for the cluster is provided on the
Z3 circuit and terminates at the instrument panel
left center support.
The M1 circuit also feeds the cluster through a 10
amp fuse in the Power Distribution Center (PDC).
This fuse is HOT at all times and also used to power
the underhood lamp, and the interior lamps. The
fuse is also lifted OPEN during vehicle shipping to
reduce battery draw.
SPEEDOMETER
The speedometer and odometer receive their infor-
mation on the G7 circuit from the Vehicle Speed Sen-
sor (VSS) on manual and 3±spd automatic
transmission applications. The G7 circuit also pro-
vides a signal to the Powertrain Control Module
(PCM).Logic internal to the instrument cluster adjusts the
position of the gauge pointer to the correct vehicle
speed using the signal on the G7 circuit.
TACHOMETER
The tachometer is connected to the Powertrain
Control Module (PCM) on the G21 circuit. It uses
solid state circuity to decode the ignition pulses
received from the PCM to adjust the gauge pointer to
the proper position.
ENGINE COOLANT TEMPERATURE GAUGE
The temperature gauge is connected to the engine
coolant temperature sensor on the G20 circuit. The
engine coolant temperature sensor for the gauge is a
combination unit. One side of the unit is used for the
Powertrain Control Module (PCM) and the other side
for the cluster. The sending unit is case grounded to
the engine.
The logic driven gauge moves in response to the
measured resistance of the engine coolant tempera-
ture sending unit.
FUEL GAUGE
The fuel level gauge is connected to the fuel pump
module on the G4 circuit. The fuel pump module con-
tains the fuel pump and a variable resistor for the
gauge. Grounding for the fuel pump module is pro-
vided on the Z2 circuit and terminates at the left
rear wheel house.
The logic driven gauge moves in response to the
measured resistance of the fuel tank sending unit.
The fuel level sensor contains a variable resistor.
As the position of the float arm on the level sensor
changes, the resistor changes the current flow
through the fuel gauge circuit. A change in current
flow alters the magnetic field in the fuel gauge which
changes the pointer position.
PL8W - 40 INSTRUMENT CLUSTER 8W - 40 - 7
Page 101 of 256
Downloaded from www.Manualslib.com manuals search engine There are two switches used in this system and
they are wired in parallel form. A parking brake
switch located on the parking brake mechanism will
illuminate the lamp if the normally OPEN switch is
CLOSED. This switch is case grounded.
The other switch used is the brake warning lamp
switch. This switch is normally OPEN. When the
brake system pressure is below a predetermined level
the switch CLOSES and completes a path to ground
from the G9 circuit at the cluster, through the
switch, to the left headlamp ground.
ANTI-LOCK WARNING LAMP
The Anti-Lock warning lamp is used to alert the
driver of a problem in the ABS system. When the
ABS controller determines a problem in the system it
grounds the G19 circuit and illuminates the lamp.
HELPFUL INFORMATION
²Check the 5 amp fuse in cavity 11 of the fuse
block.
²Check the 4 amp fuse in cavity 12 of the fuse
block.
²Check the Ignition-Off Draw fuse in the PDC.
²Check for a good ground at the instrument panel
left center support.
²For additional diagnostic tests refer to the
appropriate section of the Service Manual.
PL8W - 40 INSTRUMENT CLUSTER 8W - 40 - 9
DESCRIPTION AND OPERATION (Continued)
Page 103 of 256
Downloaded from www.Manualslib.com manuals search engine 8W-41 HORNS/CIGAR LIGHTER
INDEX
page
SCHEMATICS AND DIAGRAMS........................................................... 1
DESCRIPTION AND OPERATION.......................................................... 4
Component Page
Cigar Lighter Relay..................8W-41-3
Cigar Lighter/Power Outlet.............8W-41-3
Clockspring.........................8W-41-2
Fuse 1 (FB).........................8W-41-3
Fuse 3 (PDC)........................8W-41-3
Fuse 15 (FB)........................8W-41-3
Fuse 23 (PDC).......................8W-41-2
Fuse Block.........................8W-41-3
G101..............................8W-41-2
G103..............................8W-41-2
G204..............................8W-41-3
Horn No. 1.........................8W-41-2Component Page
Horn No. 2.........................8W-41-2
Horn Relay.........................8W-41-2
Left Horn Switch.....................8W-41-2
Power Distribution Center...........8W-41-2, 3
Right Horn Switch...................8W-41-2
S108..............................8W-41-2
S111 ..............................8W-41-2
S117 ..............................8W-41-2
S131..............................8W-41-2
S202..............................8W-41-3
S206..............................8W-41-3
S213..............................8W-41-3
8W - 41 - 2 8W - 41 HORNS/CIGAR LIGHTERPL
Page 104 of 256
Downloaded from www.Manualslib.com manuals search engine BATT A0
23FUSE10A
POWER
DISTRIBUTION
CENTER
RELAY HORN
6266
6365
CLOCKSPRING
1
SWITCH
HORN
LEFT
SWITCH HORN
RIGHT
5C101
X3
20
BK/RD
B A
BK14Z1
G101 S108
BK14Z1
S111
Z1
20
BK
X2
18
DG/RD
23
23
X3
18
BK/RD
DG/RD18 X2
BK20Z1
S117
Z1
14
BK
G103
A
B
S131
X2
18
DG/RD
HORN
NO. 1 NO. 2HORN
(8W-10-9)(8W-10-4)
(8W-10-4)
(8W-15-2) (8W-15-2) (8W-15-2)
(8W-15-4)
(8W-15-2)
8W - 41 - 2 8W-41 HORN/CIGAR LIGHTER/POWER OUTLETPL-RHD
978W-1PLR04101
Page 105 of 256
Downloaded from www.Manualslib.com manuals search engine 40A
FUSE
3
BATT A0
POWER
DISTRIBUTION
CENTER
A3
12
RD/WT
3C102
A3
12
RD/WT
S213
A3
12
RD/WT
1FUSE15A
BLOCK
FUSE
F38
16
RD
BK20Z1
G204
CIGAR
LIGHTER/
POWER
OUTLET
S202
Z1
20
BK
1
3 73
21
B1
B2
B5B3
F38
18
RD
CIGAR
LIGHTER
RELAY
5
35
RUN A22
15FUSE20A
FUSE
BLOCK
F13
18
DB
F13
18
DB
S206
Z1
20
BK
NOT USEDF38
18
RD
(8W-10-4)
(8W-10-6)(8W-10-4)
(8W-10-6)
(8W-11-4)(8W-11-2)
(8W-15-7) (8W-15-7) (8W-11-12)(8W-10-6)
(8W-11-2)
(8W-11-12)
PL-RHD8W-41 HORN/CIGAR LIGHTER/POWER OUTLET 8W - 41 - 3
PLR04102978W-1
