service ISUZU AXIOM 2002 Service User Guide

0B±12MAINTENANCE AND LUBRICATION
Maintenance Service Data
Service Data and Specifications
ENGINEValve clearance (cold)Intake 0.28+0.05 mm (0.011+0.002 in)
Exhaust 0.3+0.05 mm (0.012+0.002 in)
Spark plug typeK16PR-P11/PK16PR11/RC10PYP4
Spark plug gap1.05 mm (0.04 in)
BRAKEBrake pedal free play6±10 mm (0.24±0.39 in)
Parking brake travel6±7 notches
WHEEL ALIGNMENTToe-in (Front)0 to +2 mm (0 to +0.08 in)
Toe-in (Rear)0+5 mm (0+0.2 in)
Camber (Front)0
+30'
Camber (Rear)0
+1

Caster (Front)2
30'+45'
Toe±Axis (Rear)+1

PROPELLER SHAFTFlange torque63 N´m (46 lb ft)
WHEEL AND TIRESSizeP235/65R17
Wheel nut torque118 N´m (87 lb ft)
Tire inflation pressure (Front)180 kPa (26 psi)
* Tire inflation pressure (Rear)180 kPa (26 psi)
* Unless otherwise specified on tire information label on the vehicle.
Approximate Capacities
ItemsMetric MeasureU.S. Measure
Fuel tank74 L19.5 Gal.
* CrankcaseOil Change with Filter4.7 L5.0 Qt
Oil Change without Filter4.0 L4.2 Qt
CoolantA/T11.1 L11.7 Qt
TransmissionAutomatic8.6 L9.1 Qt
Transfer1.35 L1.4 Qt
AxleRear1.77 L1.87 Qt
Front1.25 L1.33 Qt
Shift on the fly system0.12 L0.13 Qt
Power steering1.0 L1.1 Qt
Air conditioning (R-134a)0.6 L1.32 Qt
*Crankcase capacities shown are approximate refill capacities. After refill, recheck oil level.

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±1
AXIOM
HEATING, VENTILATION AND AIR
CONDITIONING (HVAC)
HVAC SYSTEMS
CONTENTS
Service Precaution 1A±3. . . . . . . . . . . . . . . . . . . . . .
Heating and Ventilation System 1A±3. . . . . . . . . . .
General Description 1A±3. . . . . . . . . . . . . . . . . . . . .
Heater Unit 1A±6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heater Unit and Associated Parts 1A±6. . . . . . . .
Removal 1A±6. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heater Core and / or Mode Door 1A±7. . . . . . . . . .
Disassembled View 1A±7. . . . . . . . . . . . . . . . . . . .
Removal 1A±8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection 1A±8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heater Mode Control Link Unit 1A±9. . . . . . . . . . . .
Disassembled View 1A±9. . . . . . . . . . . . . . . . . . . .
Removal 1A±9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heater Temperature Control Link Unit 1A±11. . . . . .
Disassembled View 1A±11. . . . . . . . . . . . . . . . . . . .
Removal 1A±11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Assembly 1A±12. . . . . . . . . . . . . . . . . . . . . . . .
Blower Assembly and Associated Parts 1A±12. .
Removal 1A±12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±12. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Link Unit and / or Mode door 1A±13. . . . . . .
Disassembled View 1A±13. . . . . . . . . . . . . . . . . . . .
Removal 1A±13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±14. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Motor 1A±15. . . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Motor and Associated Parts 1A±15. . . . . .
Removal 1A±15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±15. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Heater Duct, Defroster Nozzle and
Ventilation Duct 1A±16. . . . . . . . . . . . . . . . . . . . . . . . .
Rear Heater Duct, Defroster Nozzle,
Ventilation Duct and Associated Parts 1A±16. . .
Removal 1A±16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±17. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning System 1A±18. . . . . . . . . . . . . . . . . .
General Description 1A±18. . . . . . . . . . . . . . . . . . . . .
Diagnosis 1A±24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning System 1A±31. . . . . . . . . . . . . . . . . . Individual Inspection 1A±31. . . . . . . . . . . . . . . . . . . . .
General Repair Procedure 1A±31. . . . . . . . . . . . . .
Leak Check 1A±33. . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressor Assembly 1A±38. . . . . . . . . . . . . . . . . . .
Compressor Assembly and Associated
Parts (6VE1) 1A±38. . . . . . . . . . . . . . . . . . . . . . . . .
Removal 1A±38. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±39. . . . . . . . . . . . . . . . . . . . . . . . . . . .
New Compressor Installation 1A±39. . . . . . . . . . . .
Condenser Assembly 1A±40. . . . . . . . . . . . . . . . . . . .
Condenser Assembly and Associated
Parts 1A±40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 1A±40. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±41. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Condenser Fan Motor 1A±42. . . . . . . . . . . . . . . . . . . .
Condenser Fan Motor and Associated
Parts 1A±42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 1A±42. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±42. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver / Drier 1A±43. . . . . . . . . . . . . . . . . . . . . . . . .
Receiver / Drier and Associated Parts 1A±43. . . .
Removal 1A±43. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±43. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Switch 1A±44. . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Switch and Associated Parts 1A±44. . .
Removal 1A±44. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±44. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Evaporator Assembly 1A±45. . . . . . . . . . . . . . . . . . . .
Evaporator Assembly and Associated
Parts 1A±45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 1A±45. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±46. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duct Sensor, Evaporator Core and/or
Expansion Valve 1A±47. . . . . . . . . . . . . . . . . . . . . . . .
Disassembled View 1A±47. . . . . . . . . . . . . . . . . . . .
Removal 1A±47. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±48. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Refrigerant Line 1A±49. . . . . . . . . . . . . . . . . . . . . . . . .
Refrigerant Line and Associated Parts 1A±49. . . .
Removal 1A±49. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±50. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data And Specifications 1A±51. . . . . . . . . . . . .

1A±2
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Compressor 1A±53. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Precaution 1A±53. . . . . . . . . . . . . . . . . . . .
General Description 1A±53. . . . . . . . . . . . . . . . . . . . . .
Diagnosis 1A±54. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Magnetic Clutch Assembly (DKV-14G Type) 1A±55
Parts Location View 1A±55. . . . . . . . . . . . . . . . . . . .
Removal 1A±55. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Repair 1A±57. . . . . . . . . . . . . . . . . .
Installation 1A±57. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressor Oil 1A±59. . . . . . . . . . . . . . . . . . . . . . . . .
Oil Specification 1A±59. . . . . . . . . . . . . . . . . . . . . . .
Handling of Oil 1A±59. . . . . . . . . . . . . . . . . . . . . . . .
Compressor Oil Check 1A±59. . . . . . . . . . . . . . . . .
Checking and Adjusting Oil Quantity for
Used Compressor 1A±59. . . . . . . . . . . . . . . . . . . . .
Checking and Adjusting for Compressor
Replacement 1A±60. . . . . . . . . . . . . . . . . . . . . . . . .
Contamination of Compressor Oil 1A±60. . . . . . . .
Oil Return Operation 1A±60. . . . . . . . . . . . . . . . . . .
Replacement of Component Parts 1A±60. . . . . . .
Main Data and Specifications 1A±61. . . . . . . . . . . . .
Special Tools 1A±63. . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Air Conditioning System 1A±64. . . . . . . .
General Description 1A±64. . . . . . . . . . . . . . . . . . . . . .
Automatic Air Conditioner Parts
Configuration 1A±64. . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Diagram 1A±65. . . . . . . . . . . . . . . . . . . . . . .
Functions and Features 1A±70. . . . . . . . . . . . . . . .
Automatic Air Conditioner Block Diagram 1A±71.
Control Panel Layout 1A±72. . . . . . . . . . . . . . . . . . .
Air Control Functions 1A±73. . . . . . . . . . . . . . . . . . .
Control Panel Switch Operation 1A±74. . . . . . . . .
Overview of Construction, Movement and
Control of Major Parts of Automatic Air
Conditioner System 1A±77. . . . . . . . . . . . . . . . . . .
Overview of Automatic Control of Automatic
Air Conditioner 1A±81. . . . . . . . . . . . . . . . . . . . . . .
Automatic Air Conditioning System 1A±82. . . . . .
Troubleshooting 1A±86. . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting, Its Overview and
Procedures 1A±86. . . . . . . . . . . . . . . . . . . . . . . . . .
Auto Air Conditioner Control Unit Power
Supply Diagnosis 1A±87. . . . . . . . . . . . . . . . . . . . . Performance and Movement checklist for
Automatic Air Conditioner Related Parts 1A±89.
Troubleshooting With Self-Diagnosis
Function 1A±91. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection By Failed Location 1A±97. . . . . . . . . . . . .
Inspection of the Sensors 1A±97. . . . . . . . . . . . . . .
Inspection of the Intake Actuator System 1A±101.
Inspection of the Mix Actuator System 1A±104. . . .
Inspection of the Mode Actuator System 1A±107. .
Inspection of the Fan Motor System 1A±110. . . . . .
Inspection of the Magnetic Clutch System 1A±115
Individual Inspection 1A±118. . . . . . . . . . . . . . . . . . .
On-Vehicle Service 1A±121. . . . . . . . . . . . . . . . . . . . . .
Power Transistor 1A±121. . . . . . . . . . . . . . . . . . . . . .
Removal 1A±121. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±121. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Heater/Air Conditioner Control
Unit 1A±121. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 1A±121. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±121. . . . . . . . . . . . . . . . . . . . . . . . . . . .
In Car Sensor 1A±122. . . . . . . . . . . . . . . . . . . . . . . . .
Removal 1A±122. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±122. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ambient Sensor 1A±122. . . . . . . . . . . . . . . . . . . . . . .
Removal 1A±122. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±122. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sun Sensor 1A±123. . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 1A±123. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±123. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duct Sensor 1A±123. . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 1A±123. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±123. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mode Actuator 1A±124. . . . . . . . . . . . . . . . . . . . . . . .
Removal 1A±124. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±124. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mix Actuator 1A±124. . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 1A±124. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±124. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intake Actuator 1A±125. . . . . . . . . . . . . . . . . . . . . . . .
Removal 1A±125. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 1A±125. . . . . . . . . . . . . . . . . . . . . . . . . . . .

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±3
Service Precaution
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING, REFER TO
THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN POSSIBLE
AIR BAG DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.
Heating and Ventilation System
General Description
Heater
When the engine is warming up, the warmed engine
coolant is sent into the heater core. The heater system
supplies warm air into the passenger compartment to
warm it up.
Outside air is circulated through the heater core of the
heater unit and then into the passenger compartment. By
controlling the mixture of outside air and heater core air,
the most comfortable passenger compartment
temperature can be selected and maintained.
The temperature of warm air sent to the passenger
compartment is controlled by the temperature control
knob. This knob acts to open and close the air mix door,
thus controlling the amount of air passed through the
heater core.The air selector switch (Mode SW), with its different
modes, also allows you to select and maintain the most
comfortable passenger compartment temperature.
The air source select switch is used to select either
ªFRESHº for the introduction of the outside air, or ªCIRCº
for the circulation of the inside air. When the switch is set
to ªFRESHº, the outside air is always taken into the
passenger compartment. When setting the switch to
ªCIRCº position, the circulation of air is restricted only to
the inside air with no introduction of the outside air and the
air in the passenger compartment gets warm quickly.
However, the switch is normally set to ªFRESHº to
prevent the windshield from clouding.

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±25
Checking The Refrigerant System With Manifold Gauge
Since Refrigerant-134a (HFC-134a) is used in the air
conditioning system in this vehicle, be sure to use
manifold gauges, charging hoses and other air
conditioning service tools for HFC-134a when
checking the refrigerant system.
Conditions:

Run the engine at idle

Air conditioning switch is ªONº

Run the blower motor at ªHIGHº position (5 positions)

Temperature control set to ªMAX COLDº (65
F)

Air source selector at ªCIRCº

Open the engine hood

Close all the doors
Normal Pressure:

At ambient temperature: approx. 25±30
C
(77±86
F).

At low-pressure side: approx. 147.1±294.2 kPa
(21.3±42.7 psi).

At high-pressure side: approx. 1372.9±1863.3 kPa
(199.1±270.2 psi).
Refer to the table on the refrigerant pressure-temperature
relationship.
HFC-134a Pressure-Temperature Relationship
PressureTemperature
(kPa)(psi)(
C)(
F)
365.3±20±4.4
679.7±155
10415±1014
14721±523
19628032
25537541
314451050
392571559
471682068
569822577
677983086
78511 43595
91213240104
10591544511 3
121617650122

1A±36
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
3. Connect the low pressure charging hose of the
manifold gauge to the low pressure side service valve
of the vehicle.
4. Connect the high pressure charging hose of the
manifold gauge to the high pressure side service
valve of the vehicle.
901R100021
Legend
(1) Low Side
(2) High Side
(3) Refrigerant Container
(4) Weight Scale
5. Place the refrigerant container(3) up right on a weight
scale(4).
Note the total weight before charging the refrigerant.
a. Open the refrigerant container valve.
b. Open the low side vale on the manifold gauge set.
Refer to the manufacturer's instructions for a
weight scale charging station.
901RS144
6. Perform a system leak test:

Charge the system with approximately 200 g
(0.44 lbs) of HFC-134a.

Make sure the high pressure valve of the manifold
gauge is closed.

Check to ensure that the degree of pressure does
not change.

Check for refrigerant leaks by using a HFC-134a
leak detector.

If a leak occurs, recover the refrigerant. Repair the
leak and start all over again from the first step of
evacuation.
7. If no leaks are found, continue charging refrigerant to
the air conditioning system.

Charge the refrigerant until the scale reading
decreases by the amount of the charge specified.
Specified amount: 700 g (1.54 lbs)

If charging the system becomes difficult:
1. Run the engine at idle and close all the vehicle
doors.
2. Turn A/C switch ªONº.
3. Set the fan switch to its highest position.
4. Set the air source selector lever to ªCIRCº.
5. Slowly open the low side valve on the manifold
gauge set.
WARNING: BE ABSOLUTELY SURE NOT TO OPEN
THE HIGH PRESSURE VALVE OF THE MANIFOLD
GAUGE. SHOULD THE HIGH PRESSURE VALVE BE
OPENED, THE HIGH PRESSURE REFRIGERANT
WOULD FLOW BACKWARD, AND THIS MAY CAUSE
THE REFRIGERANT CONTAINER TO BURST.

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±53
Compressor
Service Precaution
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT LOCATION VIEW IN ORDER TO
DETERMINE WHETHER YOU ARE PERFORMING
SERVICE ON OR NEAR THE SRS COMPONENTS OR
THE SRS WIRING. WHEN YOU ARE PERFORMING
SERVICE ON OR NEAR THE SRS COMPONENTS OR
THE SRS WIRING, REFER TO THE SRS ON-VEHICLE
SERVICE INFORMATION. FAILURE TO FOLLOW
CAUTIONS COULD RESULT IN POSSIBLE AIR BAG
DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.
CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.
General Description
When servicing the compressor, keep dirt or foreign
material from getting on or into the compressor parts and
system. Clean tools and a clean work area are important
for proper service. The compressor connections and the
outside of the compressor should be cleaned before any
ºOn±Vehicleº repair, or before removal of the
compressor. The parts must be kept clean at all times and
any parts to be reassembled should be cleaned with
Trichloroethane, naphtha, kerosene, or equivalent
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 vehicle,
except as noted. They have been prepared in order of
accessibility of the components. When the compressor is
removed from the vehicle for servicing, the oil remaining
in the compressor should be discarded and new
compressor oil added to the compressor.
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 tosee 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 oil used in the HFC±134a system
compressor differs from that used in R±12 systems.
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.
DKV-14G Type Compressor
DKV±14G is equipped with five±vane rotary compressor.
These vanes are built into a rotor which is mounted on a
shaft.
When the shaft rotates, the vanes built into the cylinder
block assembly are operated by centrifugal force.
This changes the volume of the spare 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.
871RX002

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±59
Compressor Oil
Oil Specification

The HFC-134a system requires a synthetic (PAG)
compressor oil whereas the R-12 system requires a
mineral compressor oil. The two oils must never be
mixed.

Compressor (PAG) oil varies according to
compressor model. Be sure to use oil specified for the
model of compressor.

Always use HFC-134a Vane Rotary Type
Compressor Oil (AIPDN Part No.2-90188-301-0)
Handling of Oil

The oil should be free from moisture, dust, metal
powder, etc.

Do not mix with other oil.

The water content in the oil increases when exposed
to the air. After use, seal oil from air immediately.
(HFC-134a Vane Rotary Compressor Oil absorbs
moisture very easily.)

The compressor oil must be stored in steel
containers, not in plastic containers.
Compressor Oil Check
The oil used to lubricate the compressor is circulating with
the refrigerant.
Whenever replacing any component of the system or a
large amount of gas leakage occurs, add oil to maintain
the original amount of oil.
Oil Capacity
Capacity total in system: 150cc (5.0 fl.oz)
Compressor (Service parts) charging amount:
150 cc (5.0 fl.oz)
Checking and Adjusting Oil Quantity
for Used Compressor
1. Perform oil return operation. Refer to Oil Return
Operation in this section.
2. Discharge and recover refrigerant and remove the
compressor.
3. Drain the compressor oil and measure the extracted
oil with a measuring cylinder.
4. If the amount of oil drained is much less than 90 cc
(3.0 fl. oz.), some refrigerant may have leaked out.
Conduct a leak tests on the connections of each
system, and if necessary, repair or replace faulty
parts.
5. Check the compressor oil contamination. (Refer to
Contamination of Compressor Oil in this section.)
6. Adjust the oil level following the next procedure
below.(Charging Amount)
(Collected Amount)
more than 90cc (3.0
fl.oz)same as collected
amount
less than 90 cc (3.0 fl.oz)90cc (3.0 fl.oz)
7. Install the compressor, then evacuate, charge and
perform the oil return operation.
8. Check system operation.
When it is impossible to preform oil return operation,
the compressor oil should be checked in the
following order:
1. Discharge and recover refrigerant and remove the
compressor.
2. Drain the compressor oil and measure the extracted
oil with a measuring cylinder.
3. Check the oil for contamination.
4. If more than 90 cc (3.0 fl. oz.) of oil is extracted from
the compressor, supply the same amount of oil to the
compressor to be installed.
5. If the amount of oil extracted is less than 90 cc (3.0 fl.
oz.), recheck the compressor oil in the following
order.
6. Supply 90 cc (3.0 fl. oz.) of oil to the compressor and
install it onto the vehicle.
7. Evacuate and recharge with the proper amount of
refrigerant.
8. Perform the oil return operation.
9. Remove the compressor and recheck the amount of
oil.
10. Adjust the compressor oil, if necessary.
(Collected Amount)
(Charging Amount)
more than 90 cc (3.0
fl.oz)same as collected
amount
less than 90 cc (3.0 fl.oz)90 cc (3.0 fl.oz)

1A±60
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Checking and Adjusting for
Compressor Replacement
150 cc (5.0 fl.oz.) of oil is charged in compressor (service
parts). So it is necessary to drain the proper amount of oil
from the new compressor.
1. Perform oil return operation.
2. Discharge and recover the refrigerant and remove the
compressor.
3. Drain the compressor oil and measure the extracted
oil.
4. Check the compressor oil for contamination.
5. Adjust the oil level as required.
(Amount of oil drained
from used compressor)
(Draining amount of oil
from new compressor)
less than 90 cc (3.0 fl.oz)Same as drained
amount
more than 90 cc (3.0
fl.oz)90 cc (3.0 fl.oz)
6. Evacuate, charge and perform the oil return
operation.
7. Check the system operation.
Contamination of Compressor Oil
Unlike engine oil, no cleaning agent is added to the
compressor oil. Even if the compressor runs for a long
period of time (approximately one season), the oil never
becomes contaminated as long as there is nothing wrong
with the compressor or its method of use.
Inspect the extracted oil for any of the following
conditions:

The capacity of the oil has increased.

The oil has changed to red.

Foreign substances, metal powder, etc., are present
in the oil.
If any of these conditions exists, the compressor oil
is contaminated. Whenever contaminated
compressor oil is discovered, the receiver/drier must
be replaced.
Oil Return Operation
There is close affinity between the oil and the refrigerant.
During normal operation, part of the oil recirculates with
the refrigerant in the system. When checking the amount
of oil in the system, or replacing any component of the
system, the compressor must be run in advance for oil
return operation. The procedure is as follows:
1. Open all the doors and the engine hood.
2. Start the engine and air conditioning switch to ªONº
and set the fan control knob at its highest position.
3. Run the compressor for more than 20 minutes
between 800 and 1,000 rpm in order to operate the
system.
4. Stop the engine.
Replacement of Component Parts
When replacing the system component parts, supply the
following amount of oil to the component parts to be
installed.
(Component parts to be
installed)
(Amount of Oil)
Evaporator 50 cc (1.7 fl. oz.)
Condenser30 cc (1.0 fl. oz.)
Receiver/dryer30 cc (1.0 fl. oz.)
Refrigerant line (one
piece)10 cc (0.3 fl. oz.)

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±121
On-Vehicle Service
Power Transistor
874R200014
Legend
(1) Glove Box
(2) MAX HI Relay
(3) Power Transistor Connector
(4) Power Transistor
Removal
1. Remove the glove box.
2. Remove the MAX±HI relay.
3. Disconnect the power transistor connector.
4. Remove the power transistor.
Installation
To install, follow the removal step in the reverse order.
Automatic Heater/Air Conditioner
Control Unit
865R200007
Legend
(1) Display
(2) Audio & Switch Assembly
(3) Automatic Air Conditioner Control Unit
(4) Knee Pad (RH)
(5) Center Cluster
(6) Center Cluster Upper
(7) Knee Pad (LH)
Removal
1. Disconnect the battery ground cable.
2. Remove the knee pad (R/LH).
3. Remove the center cluster upper.
4. Remove the center cluster.

Refer to
Instrument Panel Assembly in Body
Stractur section.
5. Disconnnect the six connectors.
6. Remove the automatic air conditioner control unit.
Installation
To install, follow the removal step in the reverse order.