2004 ISUZU TF SERIES section 8

HEATER AND AIR CONDITIONING 1-55
Important Operations – Removal
2. Instrument Panel Assembly and Cross Beam.
Refer to INSTRUMENT PANEL in CAB section.
4. Evaporator or Duct
Refer to “EVAPORATOR” or “DUCT” in this section.




Important Operation - Installation
2. Instrument Panel Assembly and Cross Beam
Adjust the heater control cables.
Refer to "CONTROL LEVER ASSEMBLY" in this section.

1-58 HEATER AND AIR CONDITIONING
Important Operations - Removal
2. Instrument Panel Assembly and Cross Beam.
Refer to INSTRUMENT PANEL in CAB section.
4. Evaporator or Duct
Refer to “EVAPORATOR” or “DUCT” in this section.




Important Operation - Installation
2. Instrument Panel Assembly and Cross Beam
Adjust the heater control cables.
Refer to "CONTROL LEVER ASSEMBLY" in this section.

1-66 HEATER AND AIR CONDITIONING




Important Operation - Installation
2. Instrument Panel Assembly and Cross Beam
Refer to “INSTRUMENT PANEL” in CAB section.
4. Evaporator or Duct
Refer to “EVAPORATOR” or “DUCT” in this section.




Important Operation - Installation
2. Instrument Panel Assembly and Cross Beam
Adjust the heater control cables.
Refer to “CONTOROL LEVER ASSEMBLY” in this section.

1-68 HEATER AND AIR CONDITIONING
DEFROSTER NOZZLE AND VENT DUCT
REMOVAL AND INSTALLATION


This illustration is based on RHD model



Removal Steps

1. Instrument panel assembly and cross
beam
2. Side def hose R/LH
3. Defroster nozzle
4. Vent duct driver side and assist side
5. Center vent duct

Installation Steps
5. Center vent duct
4. Vent duct driver side and assist side
3. Defroster nozzle
2. Side def hose R/LH
1. Instrument panel assembly and cross beam






Important Operation - Removal
1. Instrument Panel Assembly and Cross Beam
Refer to “INSTRUMENT PANEL ” in CAB section.

HEATER AND AIR CONDITIONING 1-69
REAR HEATER DUCT
REMOVAL AND INSTALLATION


This illustration is based on RHD model
RTW410LF001301

Disassembly Steps
1. Front seat assembly (RH/LH)
 Refer to SECTION 10 “FRONT SEAT”
2. Rear floor console

Refer to SECTION 10 “FLOOR
CONSOLE”
3. Front floor console (A/T, M/T Model)

Refer to SECTION 10 “FLOOR
CONSOLE”
4. Sill plate (RH/LH)
 Refer to SECTION 10 “INTERIOR
TRIM PANELS”
5. Dash side trim cover (RH/LH)
6. Carpet
7. Clip
8. Rear Heater duct (RH/LH)
9. Rear Heater duct center

Reassembly Steps
9. Rear heater duct center
8. Rear heater duct (RH/LH)
7. Clip
6. Carpet
5. Dash side trim cover (RH/LH)
4. Sill plate (RH/LH)

Refer to SECTION 10 “INTERIOR
TRIM PANELS”
3. Front floor console (A/T, M/T Model)
 Refer to SECTION 10 “FLOOR
CONSOLE”
2. Rear floor console

Refer to SECTION 10 “FLOOR
CONSOLE”
1. Front seat assembly (RH/LH)

Refer to SECTION 10 “FRONT SEAT”

HEATER AND AIR CONDITIONING 1-71
Important Operation - Removal
2. Instrument Panel Driver Lower Cover
Refer to “INSTRUMENT PANEL” in CAB section.


RTW310SH000101

4. Control Cables
Disconnect control cables at each unit side.


5. Center Cluster
Refer to “INSTRUMENT PANEL” in CAB section.

HEATER AND AIR CONDITIONING 1-75
Important Operation - Removal
1. Control lever assembly
Refer to “CONTROL LEVER ASSEMBLY” in this section.

2. Illumination Bulb
To remove the illumination bulb, insert an ordinary screwdriver
into the slot (B) at the back of the bulb. Turn the bulb
counterclockwise and pull it free.

HEATER AND AIR CONDITIONING 1-83

AIR CONDITIONING CYCLE TROUBLESHOOTING

TROUBLE POSSIBLE CAUSE CORRECTION
No cooling or
insufficient
cooling
1. Magnetic clutch does not run


Refer to “MAGNETIC CLUTCH”
troubleshooting in this section
2. Compressor is not rotating properly

Drive belt loosened or broken

Adjust the drive belt to the specified
tension or replace the drive belt


Magnetic clutch face is not clean and
slips
Clean the magnetic clutch face or replace




Incorrect clearance between magnetic
drive plate and pulley

Adjust the clearance (Refer to
“COMPRESSOR OVERHAUL”



Compressor oil leaks from shaft seal or
shell

Replace the compressor




Compressor seized

Replace the compressor

3. Insufficient or excessive charge of
refrigerant

Discharge and recover refrigerant.
Recharge to specified amount.
4. Leaks in the refrigerant system




Check refrigerant system for leaks and
repair as necessary
Discharge and recover refrigerant.
Recharge to specified amount.
5. Condenser clogged or insufficient radiation


Clean the condenser or replace as
necessary


Check radiator or condenser fan function

6. Temperature control link unit of the heater
unit defective

Repair the link unit

7. Unsteady operation due to foreign
substance in expansion valve

Replace the expansion valve

8. Poor operation of electronic thermostat


Check electronic thermostat and replace
as necessary
Insufficient
velocity
of cooling air

1. Evaporator clogged or frosted


Check evaporator core and replace or
clean the core
2. Air leaking from cooling unit or air duct

Check evaporator and duct connection,
then repair as necessary

3. Blower motor does not rotate prop-erly


Refer to “FAN CONTROL KNOB (FAN
SWITCH)” troubleshooting in this section

* For the execution of the charging and discharging operation in the table above, refer to the “RECOVERY,
RECYCLING, EVACUATING AND CHARGING” in this section.