Isuzu Trooper (1998-2002 year). Manual — part 8
Full hot switch
Ceramic heater
Heater unit
HEATING AND VENTILATION 1A – 5
CERAMIC HEATER
When the fan control knob (fan switch) turns on with the temperature control knob set to “FULL HOT” (full
hot switch “ON”), the ceramic heater in the heater unit gets hot, thus causing the heater blow temperature
of diesel vehicle to get high to improve the heating performance (Since the engine coolant temperature of
diesel vehicle is low, its blow temperature is also low.).
Glow plug
Full hot switch
Fan switch
Thermo switch
Less than 80°C (177.8°F)
CERAMIC HEATER
“ON”
CERAMIC HEATER
“OFF”
OFF
ON
OFF
OFF
OFF
ON
ON
ON
This illustration is based on RHD
1A – 6 HEATING AND VENTILATION
ON-VEHICLE SERVICE
HEATER UNIT
4a
5
3
4
2
6
9
8
7
1
Electro thermo connector (With A/C)
Resistor
Removal Steps
1. Instrument panel assembly
2. Water hose
3. Resistor connector
4. Duct
4a. Evaporator assembly (A/C only)
5. Instrument panel center bracket
6. Rear heater duct
7. Heater unit
8. Lap vent nozzle
9. Center ventilation lower duct
Installation Steps
To install, follow the removal steps in the
reverse order
This illustration is based on LHD
HEATING AND VENTILATION 1A – 7
INSTALLATION
To install, follow the removal steps in the reverse order,
noting the following points:
1. When handling the ECM and the control unit, be
careful not to make any improper connection of the
connectors.
2. Adjust control lever assembly cables.
Refer to “CONTROL LEVER ASSEMBLY” installation
steps in this section.
3. When installing the heater unit, defroster nozzle and
center vent duct, be sure that proper seal is made,
without any gap between then.
REMOVAL
Preparation:
•
Disconnect the battery ground cable
•
Drain engine coolant
•
Discharge and recover refrigerant (W/A/C)
(Refer to Section 1B “REFRIGERANT RECOVERY”)
1. Instrument Panel Assembly
Refer to Section 10 “BODY” for INSTRUMENT PANEL
ASSEMBLY removal procedure.
2. Water Hose
Disconnect water hoses at heater unit.
3. Resistor Connector
4. Duct
4a. Evaporator Assembly
Refer to Section 1B “AIR CONDITIONING” for
Evaporator Assembly removal procedure.
5. Instrument panel center bracket
6. Rear Heater Duct
7. Heater Unit
8. Lap vent nozzle
9. Center ventilation lower duct
1A – 8 HEATING AND VENTILATION
Removal Steps
1. Heater unit
2. Duct
3. Case (Mode control)
4. Case (Temperature control)
5. Heater core
6. Mode door
Installation Steps
To install, follow the removal steps in the
reverse order.
HEATER CORE AND/OR MODE DOOR
4
5
3
2
1
6
This illustration is based on LHD
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