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Engine Coolant Temperature Gauge
The engine coolant temperature gauge consists of two
intersecting coils wound around a permanent magnet
rotor. When voltage from the METER fuse CB-4 is
applied to the coils, a magnetic field is generated. This
causes the rotor to rotate and the gauge needle to
move.
The magnetic field is controlled by the sender.
As the resistance in the sender varies, current through
the gauge coils changes. The gauge needle moves ac-
cording to the changing magnetic field.
Fuel Gauge
The fuel gauge consists of two intersecting coils wound
around a permanent magnet rotor (see engine coolant
temperature gauge for operation). The powertrain con-
trol module (PCM) monitors the fuel level by the resis-
tance level in the fuel tank unit. The PCM then uses this
information to control the fuel gauge.
GAUGES
Circuit Operation
81-2
Tachometer
The tachometer displays engine speed in RPM. Volt-
age pulses are taken from the ignition system and sent
to the tachometer. The tachometer responds to the fre-
quency of the voltage pulses, which increases with en-
gine speed. Solid-state circuits process these pulses
into a signal that causes the gauge needle to move.
Component Location Index
(Refer to Section 201 for photographs.)
Component
Photo No.
Dash Fuse Box
Behind left I/P side trim panel
36
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Tank Unit
Beneath rear of vehicle, in right front of fuel tank
89
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
Powertrain Control Module
(PCM)
Behind front console
52
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermo Unit
Top left front of engine
26
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connector
B-5 (16-WHT)
Behind left side of I/P, on rear of meter assembly
49
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
B-8 (16-BLK)
Behind left side of I/P, on rear of meter assembly
49
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
H-4 (16-BLU)
Left rear of engine compartment on bracket
15
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H-13 (22-WHT)
Behind left side of I/P, above left kick panel on bracket
42
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
H-14 (22-BLU)
Behind left side of I/P, above left kick panel on bracket
42
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
H-16 (20-WHT)
In floor, below right front seat
66
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ground
C-46
Behind left kick panel
40
. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A/T SHIFT INDICATOR
A/T Shift Indicator Control Unit
Automatic Transmission Mode Switch
Dash Fuse Box
Taillight Relay
Component Index
89
A/T SHIFT INDICATOR
HOT AT ALL TIMES
CB-5
TAIL/ILLUMI.
LIGHT
15A
8
C-38
RED/BLK
2
DASH
FUSE
BOX
4
GRN/YEL
GRN/RED
7
C-38
Lighting
Switch
Page 12
Lighting
Switch
Details
C-31
See Ground
Distribution,
page 14-2.
COMBINATION
SWITCH
1
C-34
TAILLIGHT
RELAY
5
C-34
RED/BLK
RED/BLK
2
H-13
BLK
BLK
GRN/RED
YEL
OFF
HEAD
PARK
Headlights
WHT
Engine Controls,
Anti-theft,
Torque-on-Demand
(T.O.D.) System
RED/BLK
GRN/YEL
Circuit Schematic
89-1
A/T SHIFT INDICATOR
9
4
Automatic
Transmission
Controls,
Cruise Control
B-3
H-14
10
6
7
CB-15
BACK UP/
TURN LIGHT
15A
Automatic
Transmission
Controls
P
R
N
D
3
2
L
P
R
N
D
3
2
L
P
R
N
D
3
2
L
GRY
RED/BLU
8
7
6
M-25
ORN/BLK
PNK
PNK/BLU
BLU/BLK
AUTOMATIC
TRANSMISSION
MODE
SWITCH
PNK/
BLU
Automatic
Transmission
Controls
1
3
C-93
2
12
5
M-25
8
H-13
LT BLU
See Dash
Fuse Box,
page 11-2.
BLU/BLK
11
C-93
5
10
RED/
BLK
HOT IN ON OR START
DASH
FUSE
BOX
P
A/T SHIFT
INDICATOR
CONTROL UNIT
Solid-state:
Do not check
resistance.
13
Dash
and
Console
Lights
RED/
BLK
RED/BLU
R
RED/BLU
A/T SHIFT
INDICATOR
14
See Ground
Distribution,
page 14-4.
METER
ASSEMBLY
8
20
9
19
6
YEL/VIO
N
YEL/VIO
YEL/BLK
D
YEL/BLK
6
10
7
2
PNK/BLU
3
PNK/BLU
PNK/BLK
2
PNK/BLK
4
3
5
20
YEL/GRN
L
YEL/GRN
YEL/RED
YEL/RED
GRN/RED
GRN/RED
BLK
H-13
H-13
H-14
Dim input
Ignition input
Position input
Indicator control
Ground
BLK
2
1
2
3
H-9
BLU/BLK
6
H-7
WHT/GRN
WHT/GRN
WHT/GRN
WHT/GRN
WHT/GRN
WHT/GRN
PNK/BLU
PNK/BLU
PNK
PNK
PNK
H-14
5
3
BLK
E-28
13
H-5
BLK
Component Location Index
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