sensor ISUZU TROOPER 1998 Service Service Manual

AIR CONDITIONING 1BÐ109
Chart B: Mix Actuator Control Failure
NOReplace the actuator.
NOThe harness is disconnected.
NO
NOMix actuator control failure due to the
failed sensor.
YES YES
YES
YES
Turn on the ignition switch (the engine is
started).
Replace the automatic heater/air conditioner
control unit.
Is conduction provided between the
following chassis harness side
connector terminals?
No.3 and No.11 .
No.7 and No.5 .
No.2 and No.15 .
I-33I-45
I-33I-45
I-33I-45
Is sum of the voltages between the
following chassis harness side connector
terminals approximately 5V?
Voltage between No.15 and No.5
plus voltage between No.5
and No.11 .
I-33
I-33I-33
I-33
Does the self-diagnosis function (the
current trouble display) indicate failure
on the mix actuator potentiometer?
Is full stroke of the air mix door available
when you selected FH or FC using the
temperature control lever?Failure on the air mix door or the link
unit.

1BÐ112 AIR CONDITIONING
Chart B: Mode Actuator Control Failure
NOThe harness is disconnected.
NOReplace the actuator.
NOFailure on the mode door or the link unit.
YESMode control failure due to the failed
sensor.
NO YES
YES
YES
Turn on the ignition switch (the engine is
started).
Replace the automatic heater/air conditioner
control unit.
Is conduction provided between the
following chassis harness side
connector terminals?
No.9 and No.11 .
No.3 and No.10 .
No.4 and No.8 .
I-33B-69
I-33B-69
I-33B-69
Is sum of the voltages between the
following chassis harness side connector
terminals approximately 5V?
Voltage between No.15 and No.1
plus voltage between No.15
and No.11 .
I-33
I-32I-32
I-32
Does the mode work normally through
manual operation?
Is full stroke available from the mode
door when the defrost mode and vent
mode are selected?

1BÐ118 AIR CONDITIONING
Inspection of the Magnet Clutch System
6VE1 Engine
I-32
C-1C-3I-33
E-3E-19
12345678
9 10111213141516
1
112
123
134
145
156
167
178
189
1910
20
B-19C-25
A 2
B-361
H-14
C-19
25A
BLOWER
MOTOR
C-20
10A
A/C FL-1
80A
MAIN
Heater
Relay
1B-3610
H-13
0.3
B 0.85
W/G0.85
W/R
3.0
W
3.0
L/R
0.5
BR
1.25
B
B-19
BODY-LH3
B-36
4B-36
BATT.(+)
Blower
MotorIntake
Actuator STARTER
RELAY(1)
0.5
LG 0.5
BR0.5
BR
0.5
G/W
0.5
P/G0.5
P/G0.5
G/O
0.5
G/O
PCM
(C3-E15)
31 13
COMP-F/B 70.5
BR
0.5
BR/Y 0.3
G/B0.5
G/B0.5
BR/Y 0.5
BR
Triple
Pressure
Switch
0.5
BR
A
A/C
Thermo Relay
Auto A/C Control Unit
3X-5
16
H-1617H-16
14
I-3218I-33
1X-5
13H-24
12
H-41
2 1
C-25
C-25
4X-5X-5 2
X-57
H-16
A/C
Compressor
Relay
Magnetic
clutch
1X-7
3X-74X-72
X-7
PCM
(C-1-B14)
E-39
1
H-67
H-41
5
H-41
Engine
Coolant
Temperature
Sensor
ENGINE COOLANT
TEMPERATURE GAUGE
0.5
Y/B
0.5
Y/B
0.5
Y/B
E-1911
1
H-61
H-24
I-334
B-36X-5X-7
H-14
1
2
1
2
H-16
H-24
H-13
H-6H-41
12
3412111
362
51
4 123
45 610987654321
22212019181514131211171612345111213141567891018192021221617
6H-41
4321
8765
12 11 10 9
16 15 14 13123 4
567 8
9101112
13 14 15 16
17 18 16 15 1478 6 5
12 13 11 10 94 132
5 6 7 8
15 16 17 18 142 3 41
10 11 12 13 9A1 A2 A3 A4 A5 A6 A7 A8 A9A10 A11 A12 A13 A14 A15 A16B1 B2 B3 B4 B5 B6 B7 B8 B9B10 B11 B12 B13 B14 B15 B16E1 E2 E3 E4 E5 E6 E7 E8 E9E10 E11 E12 E13 E14 E15 E16F1 F2 F3 F4 F5 F6 F7 F8 F9F10 F11 F12 F13 F14 F15 F16
D08RY00182

AIR CONDITIONING 1BÐ123
Inspection of the Air Conditioner Room Temperature Setup System
¥ Conflicts Between the Set Temperature and Actual Room Temperature
NOReplace the failed sensor.
NO
NO
Failure on the automatic heater/air
conditioner control unit.
YES YESYES
Is the in car sensor intaking the room
air? (Refer to the later section on "Check
Up".)
Is the air mix link properly attached?
(Make sure that selecting FH or FC using
the lever respectively sets the mix door
to the full hot or full cool.)
Are the interior temperature sensor and
the outside air temperature sensor
functioning normally?
Failure on the in car sensor.
Failure on the air mix link or the actuator.

1BÐ124 AIR CONDITIONING
INDIVIDUAL INSPECTION
In Car Sensor
1. Disconnect the in car sensor connector (I-34).
2. Measure resistance between the in car sensor
side terminal No.3 and No.4 .Sun Sensor
1. Disconnect the sun sensor connector (I-35).
2. Measure the current value on the sun sensor
when placed it approximately 15 cm away from
60W incandescent lamp.
Ambient Sensor
1. Disconnect the connector (C-86) on the ambient
sensor.
2. Measure resistance between the ambient
sensor side terminals. I-34
I-34
Temperature on the Sensor
Temperature Detector(¡C)
Sensor Resistance
Value(k½)














"650
4321
-20 0 5 10 15 20
25 30
-10 0 10 20 30 40
17.09
9.93
3.75
2.24
6.0
1.6 30.69
865RX007
½
0
10 0 -10 -20 30 4020 5 10 15 20 25 30
Temperature on the Sensor
Temperature Detector(¡C)
Sensor Resistance
Value(k½)
17.09 30.69
9.93
6.0
3.75
2.24
1.6
C01RX012
Ð Testing rod12
A
Current
value
40µA or more
+
12
21
D06RY00001

AIR CONDITIONING 1BÐ125
Power Transistor
1. Remove the power transistor connector (I-47)
from the evaporator assembly.
2. Check the conduction between the power
transistor side terminals.
MAX HI Relay
1. Remove the MAX HI relay connector (B-64) from
the blower assembly.
2. Check the conduction between the MAX HI relay
side terminals.In Car Sensor
1. Turn on the ignition switch (the engine is
started). Start the air conditioner in "Full Auto".
2. Make sure that the in car sensor suctions
cigarette smokes and such.
3. Dismount the in car sensor from the automatic
heater/air conditioner control unit. Connect (+)
end and (-) end of the battery to the aspirator
motor side terminals No.1 and No.2
, respectively, then
check if the motor runs normally.I-34
I-34














"650
4321
C01RW020
43
3 41
2 21
No continuity between terminals (2) and (4).
Continuity between terminal (2) and (4) when battery
voltage is applied between (1) and (3).
C01RY00003
1
2
3
Terminal
No.Conduction
Conducted (50½ maximum)
Conducted (100½ maximum)
Conducted (220½ maximum) Not conducted
Not conducted 1
µ23
Testing
rod
µ
µ
µ
µ
´
´
´
´
´
1 23
C01RY00002

AIR CONDITIONING 1BÐ127
In Car Sensor
Legend
(1) In Car Sensor
(2) Automatic Heater / Air Conditioner Control
Unit
Removal
1. Disconnect the battery ground cable.
2. Remove the automatic heater / air conditioner
control unit.
·Refer to the automatic heater / air conditioner
control unit section.
3. Remove in car sensor.
Installation
To install, follow the removal step in the reverse
order.
Ambient Sensor
Legend
(1) Ambient Sensor
(2) Sensor Connector
(3) Radiator Grill
Removal
1. Disconnect the battery ground cable.
2. Remove radiator grille.
·Refer to Radiator Grille in Body Structure
section.
3. Disconnect the ambient sensor connector.
4. Remove the ambient sensor.
Installation
To install, follow the removal step in the reverse
order.


;&9&-
"650
"$0''"
650-0)*
21
865RY00006
12
3
875RY00001

1BÐ128 AIR CONDITIONING
Sun Sensor
Legend
(1) Sun Sensor
Removal
1. Disconnect the battery ground cable.
2. Remove the sun sensor.
3. Disconnect the sun sensor connector.
Installation
To install, follow the removal step in the reverse
order.
Electronic Thermostat
Legend
(1) Duct Sensor
(2) Thermostat Assembly
(3) Evaporator Assembly
Removal
1. Disconnect the battery ground cable.
2. Remove evaporator assembly.
·Refer to Evaporator Assembly section.
3. Remove electronic thermostat.
Installation
To install, follow the removal step in the reverse
order.
1
826RY00001
1
3
2
874RY00002
This illustration is based on RHD This illustration is based on RHD

COMPRESSOR OVERHAUL 1D Ð 3
solvent, and dried with dry air. Use only lint free
cloths to wipe parts.
The operations described below are based on
bench overhaul with compressor removed from the
car, except as noted. They have been prepared in
order of accessibility of the components. When the
compressor is removed from the car for servicing,
the oil remaining in the compressor should be
discarded and new refrigerant oil added to the
compressor.
Magnetic clutch assembly repair procedures require
that the system be discharged of refrigerant. (Refer
to Section 1B for ÒREFRIGERANT RECOVERYÓ.)
Compressor malfunction will appear in one of four
ways: noise, seizure, leakage or low discharge
pressure. Resonant compressor noises are not
cause for alarm; however, irregular noise or rattles
may indicate broken parts or excessive clearances
due to wear. To check seizure, de-energize the
magnetic clutch and check to see if the drive plate
can be rotated. If rotation is impossible, the
compressor is seized. Low discharge pressure may
be due to a faulty internal seal of the compressor,
or a restriction in the compressor. Low discharge
pressure may also be due to an insufficient
refrigerant charge or a restriction elsewhere in the
system. These possibilities should be checked prior
to servicing the compressor. If the compressor is
inoperative, but is not seized, check to see if current
is being supplied to the magnetic clutch coil
terminals.
The compressor has vanes built into a rotor which
is mounted on a shaft.
When the shaft rotates, the vanes built into the
cylinder block assembly are opened by centrifugal
force.
This changes the volume of the space formed by
the rotor and cylinder, resulting in the intake and
compression of the refrigerant gas. The discharge
valve and the valve stopper, which protects the
discharge valve, are built into the cylinder block
assembly. There is no suction valve but a shaft seal
is installed between the shaft and head; a trigger
valve, which applies back pressure to the vanes, is
installed in the cylinder block and a refrigerant gas
temperature sensor is installed in the front head.
The specified quantity of compressor oil is
contained in the compressor to lubricate the various
parts using the refrigerant gas discharge pressure.
6VD1 engine is equipped with an invariable
capacity five-vane rotary compressor (DKV-14D
Type).
The compressor sucks and compresses refrigerant
by the rotation of the vane installed to the shaft,
and always discharges a fixed amount of refrigerant
independent of the load of refrigerant.The thermo sensor is installed to the front head of
the compressor to protect it by stopping its
operation when the refrigerant gas is insufficient or
when the temperature get abnormally high.
·OFF ..... 160 ±5¡C (320.0 ±9.0¡F)
·ON ..... 135 ±5¡C (275.0 ±9.0¡F)
4JG2 Engine are provided with a swash plate type
compressor (DKS-15CH Type)
Swash plate compressors have a swash (slanted)
plate mounted on the shaft. When the shaft turns,
the rotation of the swash plate is converted to
reciprocating piston motion which sucks in and
compresses the refrigerant gas.
Shaft seal (Lip type) is installed between the valve
plate and shaft & cylinder head to prevent
refrigerant gas leaks. A specified amount of
compressor oil is contained in the oil pan.
This oil is supplied to the cylinders, bearings, etc.,
by an oil pump which is connected to the swash
plate shaft.
With some compressors the differential between
the intake pressure and discharge pressure
generated while the compressor is operating is
used for lubrication instead of an oil pump.
Three pistons are arranged at 120g intervals around
the center of the swash plate shaft. These pistons
are connected to the ends of the swash plate
through shoe disks and balls.
The rotation of the swash plate causes
reciprocating movement of the piston inside the
cylinders, with each piston operating as two
cylinders. Because of that, the compressor operates
as though it has 6 cylinders.
The specified amount of the compressors oil is
150cc (4.2 Imp fl oz).
Also, compressor oil to be used varies according to
the compressor model. Be sure to avoid mixing two
or more different types of oil.
If the wrong oil is used, lubrication will be poor and
the compressor will seize or malfunction.

3C – 10 FRONT SUSPENSION
KNUCKLE
Removal Steps
1. Torsion bar
2. Wheel speed sensor
(if equipped with ABS)
3. Back plate
4. Lower ball joint
5. Upper ball joint
6. Knuckle assembly
7. Oil seal
8. Thrust washer
9. Needle bearing
10. Knuckle
Installation Steps
10. Knuckle
9. Needle bearing
8. Thrust washer
7. Oil seal
6. Knuckle assembly
5. Upper ball joint
4. Lower ball joint
3. Back plate
2. Wheel speed sensor
(if equipped with ABS)
1. Torsion bar