Toyota Avensis ZZT251 2003 Service And Repair Manual page 1335

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Condition : Air conditioning system does not function effectively.
Symptom
Y Pressure is low on both low and
high pressure sides
Y Cooling performance is insuffi-
cient
Condition : Air conditioning system does not function effectively.
Symptom
Y Pressure is low on both low and
high pressure sides
Y Frost exists on piping from con-
denser to unit
AVENSIS REPAIR MANUAL (RM1018E)
HEATER & AIR CONDITIONER
(3)
Probable cause
Gas leakage in refrigeration sys-
tem
(4)
Probable cause
Refrigerant flow is obstructed by
dirt in condenser
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– REFRIGERANT
When cooling is insufficient:
Diagnosis
Y Insufficient refrigerant
Y Refrigerant leakage
When the circulation of the refrigerant is poor:
Diagnosis
Condenser is clogged
I22118
Corrective Actions
(1) Check for gas leakage and re-
pair if necessary
(2) Supply proper amount of new
refrigerant
(3) If indicated pressure value is
close to 0 when connected to the
gauge, vacuum after inspecting
and repairing the location of leak-
age.
I22119
Corrective Action
Replace condenser