Toyota Camry Manual page 27

6. REFRIGERANT OVERCHARGE OR INSUFFICIENT COOLING OF CONDENSER
Condition: Does not cool sufficiently
Symptom seen in
refrigeration system
Pressure too high on
both low and high
pressure sides
No air bubbles seen
through the sight glass
even when the engine
rpm is lowered.
7. AIR PRESENT IN REFRIGERATION SYSTEM
Condition: Does not cool down sufficiently
Symptom seen in
refrigeration system
Pressure too high on
both low and high
pressure sides
The low pressure piping
is hot to the touch
Bubbles seen in sight
glass
AIR CONDITIONING SYSTEM
Probable cause
Unable to develop suffi–
cient performance due to
excessive refrigerant in
system
.Insufficient cooling of
condenser
Probable cause
Air entered in refrigera–
tion system
– TROUBLESHOOTING
Diagnosis
Excessive refrigerant in
cycle – refrigerant over–
charged:
Condenser cooling insuf–
ficient – condenser fins
clogged or fan motor
faulty
Diagnosis
Air present in refrigera–
(1) Check compressor oil
tion system
(2) Evacuate air and
Insufficient vacuum
purging
Remedy
(1) Clean condenser
(2) Check fan motor oper–
ation
(3) If (1) and (2) are in nor–
mal state, check
amount of refrigerant
Charge proper amount
of refrigerant
Remedy
to see if dirty or insuffi–
cient
charge new refrigerant
AC–27