engine coolant ISUZU TROOPER 1995 Workshop Manual

~ INSPECTION
131 Remove the engine coolant temperature (ECT)
gauge from the meter assembly, and measure
the resistance value between each terminal.
T·U
+
Fig. 8-362
E) REMOVAL AND INSTALLATION
1••1 Refer to the removal and installation steps the
voltmeter.
OIL PRESSURE GAUGE
CIRCUIT DIAGRAM OF THE OIL PRESSURE
GAUGE (FIG. 8-363)
CHASSIS ELECTRICAL 8 -325
(Fig. 8-362)
Replace the
ECT gauge when the result of inspec­
tion is found abnormal.
(Q)
Terminal symbol Resistance
value
(+)-T·U 82 ± 8.2
OILU
Oil pressure unit
,______ _ __ ___.
Oil pressure gauge
Fig. 8-363

8-340 CHASSIS ELECTRICAL
HEATER AND AIR CONDITIONING
GENERAL DESCRIPTION
The circuit consists of the pressure switch, NC switch, electric thermostat, blower motor, fan switch, magnet
clutch of the NC compressor, blower resistor and relay.
The start and stop of the NC is controlled by turning the NC switch on and off. The electric thermostat and the
ECM can stop the operation of the NC temporarily by disconnecting the magnet clutch under the
predetermined conditions
to adjust the room temperature, preventing the abnormal rise of the engine coolant
and reduce the engine load while the NC is in operation.
Refer
to Section 18 "AIR CONDITIONING" for detail.
OPERATING CONDITIONS OF A/C COMPRESSOR (MAGNETIC CLUTCH)
BATIERY(+)
--
~
A/C SW "ON"
~
HEATER & A/C RELAY "ON"
(The contact point is closed except
when starter SW is at ST or OFF position)
(S =:>
¢:!]
PRESSURE D
SW"ON"
¢:::l
~ FAN SW"ON"
u A/C THERMOSTAT
RELAY
"ON"
A/C COMPRESSOR
RELAY"ON"
ECM IA2l "ON"
MAGNETIC
CLUTCH lAIC COMPRESSOR)
"ON"
NOTE:
Arrow marks" =:> " indicate the direction of current
Fig. 8-394
~
1111