coolant temperature ISUZU TROOPER 1998 Service Repair Manual

WIRING SYSTEM 8DÐ453
4-3 Needle Overshoots (Goes Up To The ÒHÓ Range)
·
·DISCONNECT THE CONNECTOR OF THE ENGINE
COOLANT TEMPERATURE UNIT
WHEN THE STARTER SW IS TURNED ON, DOES THE
POINTER REACH TO THE “H” RANGE?
YES
·IS THERE A SHORT CIRCUIT BETWEEN THE
ECT UNIT AND THE ECT GAUGE?
YES
REPLACE THE ENGINE COOLANT
TEMPERATURE UNIT
NO
REPAIR THE SHORT CIRCUIT
NO
REPLACE THE METER ASSEMBLY

WIRING SYSTEM 8D – 471
Heater and Air Conditioning
General Description
The circuit consists of pressure switch, A/C switch,
electronic thermostat, blower motor, fan switch,
magnetic clutch of A/C compressor, blower resistor
and relay.
The operation of A/C system is controlled by turning
A/C switch on and off. Electronic thermostat and PCM
can stop operation of A/C temporarily by disconnect-
ing magnetic clutch under the predetermined condi-
tions to adjust room temperature, preventing abnor-
mal rise of engine coolant and reduce engine load
while A/C is in operation.
Refer to Heating, Ventilation and Air Conditioning in
HVAC section.

8E–2METER AND GAUGE
Meter Assembly
General Description
The meter assembly has the speedometer, tachometer,
engine coolant temperature gauge, fuel gauge and
warning/indicator lights. In addition, the meter assembly
containing TOD (Torque on Demand) has the TOD
indicator light, or the meter assembly not containing TOD
has the voltmeter and oil pressure gauge instead of the
TOD indicator.
Layout for Meters/Gauges, Warning Lights, Indicator Lights and Illumination
Lights
Meter Assembly–Gasoline W/O TOD (Front View)
825RW207
Legend
(1) Voltmeter & Engine Coolant Temperature
Gauge
(2) Tachometer
(3) Warning Light Lens
(4) Speedometer(5) Oil Pressure Gauge & Fuel Gauge
(6) Warning Light Lens
(7) Reset Knob
(8) A/T Shift Indicator
(9) Warning Light Lens

8E–4METER AND GAUGE
Meter Assembly–Gasoline W/TOD (Front View)
825RW210
Legend
(1) TOD Indicator
(2) Tachometer
(3) Warning Light Lens
(4) Speedometer(5) Coolant Temperature Gauge & Fuel Gauge
(6) Warning Light Lens
(7) Reset Knob
(8) A/T Shift Indicator
(9) Warning Light Lens

8E–6METER AND GAUGE
Meter Assembly–Diesel (Front View)
825RW211
Legend
(1) TOD Indicator
(2) Tachometer
(3) Warning Light Lens
(4) Speedometer(5) Coolant Temperature Gauge & Fuel Gauge
(6) Warning Light Lens
(7) Reset Knob
(8) Warning Light Lens

METER AND GAUGE8E–9
Meter Assembly–Gasoline W/O TOD–2
Connector No. I–9
TerminalFunction
1A/T oil temp warning light
2Seat belt warning light
3Check trans warning light
4Brake warning light
5Check engine warning light
6Charge warning light
7Cigarette lighter illumination light
8Illumination controller
9Tachometer
10D position (A/T)
11—
12A/T shift indicator control unit
13—
142 position (A/T)
15Starter switch
16Cruise set indicator light
17Cruise main indicator light
184WD indicator light
19Ground (Gauge)
20—
21Winter drive indicator light
22Oil pressure warning light
23—
24Air bag warning light
25Power drive indicator light
26—
27—
28Turn signal indicator light (Left)
29—
30Ground
Connector No. I–10
TerminalFunction
1Turn signal indicator light (Right)
2L position (A/T)
3R position (A/T)
4Engine coolant temperature gauge
5Speedometer
6—
7—
8Battery (+)
9—
10Rear fog light
11P position (A/T)
12N position (A/T)
133 position (A/T)
14High-beam indicator light (–)
15High-beam indicator light (+)
16ABS indicator light
17—
18Fuel warning light
19Oil pressure gauge
20Fuel gauge
21—
22—

METER AND GAUGE8E–11
Meter Assembly–Gasoline W/TOD–2
Connector No. I–9
TerminalFunction
1—
2Air bag warning light
3A/T oil temp warning light
4Charge warning light
5Check engine warning light
6Check trans warning light
7Brake warning light
8—
9Tachometer
10—
11Turn signal indicator light (Left)
12A/T shift indicator control unit
132 position (A/T)
14D position (A/T)
15Rear (TOD)
16Auto (TOD)
17Check (TOD)
18Cruise set indicator light
19Cruise main indicator light
20Oil pressure warning light
21Front “1” (TOD)
22Front “2” (TOD)
23Front “3” (TOD)
24Cigarette lighter illumination light
25Illumination controller
26Starter switch
27—
28Winter drive indicator light
29Power drive indicator light
30—
Connector No. I–10
TerminalFunction
1Turn signal indicator light (Right)
2L position (A/T)
3R position (A/T)
4Check engine warning light
5Speedometer
6—
7—
8Battery (+)
9Engine coolant temperature gauge
10Ground
11P position (A/T)
12N position (A/T)
133 position (A/T)
14High beam indicator light (–)
15High beam indicator light (+)
16ABS indicator light
17—
18Fuel warning light
19—
20Fuel gauge
21Ground (Gauge)
22—

METER AND GAUGE8E–13
Meter Assembly–Diesel–2
Connector No. I–9
TerminalFunction
1—
2Seat belt warning light
3—
4Brake warning light
5—
6Charge warning light
7Cigarette lighter illumination light
8Illumination controller
9Tachometer
10—
11—
12—
13—
14—
15Starter switch
16—
17—
184WD indicator light
19Ground (Gauge)
20—
21—
22Oil pressure warning light
23Water sedimenter
24Air bag warning light
25—
26Glow indicator light
27—
28Turn signal indicator light (Left)
29—
30Ground
Connector No. I–10
TerminalFunction
1Turn signal indicator light (Right)
2—
3—
4Engine coolant temperature gauge
5Speedometer
6—
7—
8Battery (+)
9—
10—
11—
12—
13—
14High-beam indicator light (–)
15High-beam indicator light (+)
16ABS indicator light
17—
18Fuel warning light
19Oil pressure gauge
20Fuel gauge
21—
22—