2002 ISUZU AXIOM Service Repair Manual

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Page 49 of 2100

ISUZU AXIOM 2002  Service Repair Manual HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±23
Air Conditioning Parts
852R200008
Legend
(1) Liquid Line (High-Pressure Pipe)
(2) Clip
(3) Discharge Line (High-Pressure Hose)
(4) Pressure Swit

Page 50 of 2100

ISUZU AXIOM 2002  Service Repair Manual 1A±24
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Diagnosis
Air Conditioning Cycle Diagnosis
ConditionPossible causeCorrection
No cooling or insufficient cooling.Magnetic clutch does not run.Ref

Page 51 of 2100

ISUZU AXIOM 2002  Service Repair Manual 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

Page 52 of 2100

ISUZU AXIOM 2002  Service Repair Manual 1A±26
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Connect The Manifold Gauge
Low-pressure hose (LOW) Ð Suction side
High pressure hose (HI) Ð Discharge side
901R100020
Legend
(1) Low Side
(2)

Page 53 of 2100

ISUZU AXIOM 2002  Service Repair Manual HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±27
ConditionPossible causeCorrection
Discharge (High Gauge) Pressure
Abnormally High
Condenser clogged or dirty.Clean the condenser fins
Abnormally

Page 54 of 2100

ISUZU AXIOM 2002  Service Repair Manual 1A±28
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Condition CorrectionPossible cause
Suction (Low Gauge) Pressure
Abnormally Low
Receiver/drier inlet and outlet
refrigerant line temperature. (A

Page 55 of 2100

ISUZU AXIOM 2002  Service Repair Manual HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
1A±29
Condenser Fan Diagnosis
While the air conditioning is ON, the cycling switch in the
triple pressure switch senses the refrigerant pressure,
and

Page 56 of 2100

ISUZU AXIOM 2002  Service Repair Manual 1A±30
HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Chart ªAº Condenser Fan Does Not Run 
StepActionYe sNo
1Are 30A fuse normal?Go to Step 2Replace
2Is relay (X-16) normal?Go to Step 3Replace
3I