1998 ISUZU TROOPER Service Repair Manual

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Page 121 of 3573

ISUZU TROOPER 1998 Service Repair Manual 1A Ð 26 HEATING AND VENTILATION
INSTALLATION
To install, follow the removal steps in the reverse order,
noting the following points:
1. Adjust the control cables
Air source control cable
1) Slide t

Page 122 of 3573

ISUZU TROOPER 1998 Service Repair Manual HEATING AND VENTILATION 1A Ð 27
Removal Steps
1. Control lever assembly
2. Bulb socket
3. Illumination bulb
Installation Steps
To install, follow the removal steps in the
reverse order.
CONTROL PANE

Page 123 of 3573

ISUZU TROOPER 1998 Service Repair Manual 1A Ð 28 HEATING AND VENTILATION
5
7
6To Blower unit
To Heater unit
34
12
Removal Steps
1. Front console assembly
2. Lower cluster assembly
3. Glove box
4. Instrument panel passenger
lower cover
5. Re

Page 124 of 3573

ISUZU TROOPER 1998 Service Repair Manual HEATING AND VENTILATION 1A Ð 29
REMOVAL
Preparation:
Disconnect the battery ground cable
1. Front console assembly
2. Lower cluster assembly
3. Glove box
4. Instrument panel passenger lower cover

Page 125 of 3573

ISUZU TROOPER 1998 Service Repair Manual 1A Ð 30 HEATING AND VENTILATION
4
4a
3
Full hot switch
Cover
Clamp
22
0

25

30AUTOA
/
CO
F
FAUTOLOHI
1
y��
Removal Steps
1. Instrument panel assembly
2. Instrument panel center brac

Page 126 of 3573

ISUZU TROOPER 1998 Service Repair Manual HEATING AND VENTILATION 1A Ð 31
REMOVAL
Preparation:
Disconnect the battery ground cable
1. Instrument panel assembly
Refer to Section 10 ÒBODYÓ for ÒINSTRUMENT
PANEL ASSEMBLYÓ removal procedu

Page 127 of 3573

ISUZU TROOPER 1998 Service Repair Manual AIR CONDITIONING 1B Ð 1
CAUTION
When fasteners are removed, always
reinstall them at the same location from
which they were removed. If a fastener
needs to be replaced, use the correct part
number

AIR CONDITIONING 1B Ð 1
CAUTION
When fasteners are removed, always
reinstall them at the same location from
which they were removed. If a fastener
needs to be replaced, use the correct part
number fastener for that application. If the
correct part number fastener is not available,
a fastener of equal size and strength (or
stronger) may be used. Fasteners that are not reused, and those
requiring thread locking compound, will be
called out. The correct torque values must
be used when installing fasteners that
require it. If the above conditions are not
followed, parts or system damage could
result.
SECTION 1B
AIR CONDITIONING
CONTENTS
PAGE
General Description.....................................................1BÐ 3
Air Conditioning Refrigerant Cycle Construction...........................1BÐ 3
Compressor.........................................................1BÐ 4
Magnetic Clutch......................................................1BÐ 5
Receiver/Drier.......................................................1BÐ 5
Dual Pressure Switch.................................................1BÐ 6
Triple Pressure Switch................................................1BÐ 6
Expansion Valve......................................................1BÐ 6
Evaporator..........................................................1BÐ 7
Electronic Thermostat.................................................1BÐ 7
Refrigerant Line......................................................1BÐ 7
Service Charge Valve..................................................1BÐ 7
Air Conditioning Parts.................................................1BÐ 8
On-Vehicle Service......................................................1BÐ 13
Precautions For Replacement or Repair of Air Conditioning Parts.............1BÐ 13
Compressor Assembly and Associated Parts..............................1BÐ 23
Condenser Assembly (LHD V6 without Condenser Fan).....................1BÐ 33
Condenser Fan Motor.................................................1BÐ 35
Receiver/Drier.......................................................1BÐ 37
Pressure Switch......................................................1BÐ 39
Evaporator Assembly.................................................1BÐ 42
Evaporator Core and/or Expansion Valve.................................1BÐ 44
Electronic Thermostat.................................................1BÐ 47
A/C Switch and Illumination Bulb.......................................1BÐ 48
Refrigerant Line......................................................1BÐ 49
Rear Cooler Parts.....................................................1BÐ 51

Page 128 of 3573

ISUZU TROOPER 1998 Service Repair Manual 1B Ð 2 AIR CONDITIONING
Full Automatic Air Conditioning System....................................1BÐ 60
General Description.....................................................1BÐ 60
Full Automati

1B Ð 2 AIR CONDITIONING
Full Automatic Air Conditioning System....................................1BÐ 60
General Description.....................................................1BÐ 60
Full Automatic Air Conditioner Part Configuration.........................1BÐ 60
Circuit Diagram......................................................1BÐ 62
Function and Features.................................................1BÐ 74
Full Automatic Air Conditioner Block Diagram.............................1BÐ 75
Air Conditioning Parts.................................................1BÐ 76
Control Panel Layout..................................................1BÐ 80
Air Control Functions.................................................1BÐ 81
Operation and Function of Control Panel Switches.........................1BÐ 82
Overview of Construction, Movement and Control of Major Parts of Full Automatic
Air Conditioner System................................................1BÐ 84
Overview of Automatic Control of Full Automatic Air Conditioner............1BÐ 88
Troubleshooting........................................................1BÐ 92
Troubleshooting, Its Overview and Procedures............................1BÐ 92
Performance and Movement Checklist for Automatic Air Conditioner Related
Parts...............................................................1BÐ 95
Troubleshooting with Self-Diagnosis Function............................1BÐ 97
Inspection by Failed Location.............................................1BÐ100
Inspection of the Sensors..............................................1BÐ100
Inspection of the Intake Actuator System.................................1BÐ104
Inspection of the Mix Actuator System...................................1BÐ107
Inspection of the Mode Actuator System.................................1BÐ110
Inspection of the Fan Motor System.....................................1BÐ113
Inspection of the Magnet Clutch System.................................1BÐ118
Inspection of the Air Conditioner Room Temperature Setup System..........1BÐ123
Individual Inspection..................................................1BÐ124
On-Vehicle Service......................................................1BÐ126
Power Transistor.....................................................1BÐ126
Automatic Air Conditioner Control Unit..................................1BÐ126
In Car Sensor........................................................1BÐ127
Ambient Sensor......................................................1BÐ127
Sun Sensor..........................................................1BÐ128
Electronic Thermostat.................................................1BÐ128
Mode Actuator.......................................................1BÐ129
Mix Actuator.........................................................1BÐ129
Intake Actuator......................................................1BÐ130

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