Toyota Celica 2000 Repair Manual page 1077

AC-6
Condition: Does not cool (Cools from time to time in some cases)
Symptom seen iu
refrigeration system
•
Vacuum indicated on low pres·
sure side, very low pressure illdi-
cated on high pressure S<de
•
Frost or dew seen on piping be-
fore and after receiver} drier or ex·
paflsion valve
Conditron: JnsuHicienl cooling
on
Symptom seen
mfrigeration system
•
Pressure too high on both low
and high pressure sides
•
No sir bubbles see11 \llrough the
s!ghl glass even when the engine
rpm is lowered
AJR CONDITIONING
(5)
Probable cause
•
Refrigerant flow obstructed by
mo•sturo or dirt in refrigeration sys-
tern
•
Refrigerant flow obstructed by
ga�; le<J.k.c lge from exp<Jnsion valve
(6)
Probable cause
•
Unable to develop sufficient per ·
formaf\ce duo to excessiVe
•
Insufficient cooling of condenser
CONDITIONING
AIR SYSTEM
Refrigerant does not circulate
Dtagnosis
Retngerant does not Circulate
Refrigerant overcharged or insufficient cooling of
condenser
D•agnosis
•
Excessive HJfrigeranl in
cycle-nefngvrant overcharged
•
Condenser cooling
insullicient-->condenser fins
clogged ol cooling fan faulty
!01449
Remedy
(1)
Check expansion valve
(2)
Clean out dirt in expansion
valve by blowing with air
{3) Replace condenser
(4)
Evacuate air and charge new
(5)
hx gas leakage expan·
refrigerant to proper onnount
from
sion val,.e, replace expansion
v;.Jlve
I!JI390
Remedy
(1)
Clean condenser
(2)
Chock cooling fan with fluid
couplmg operation
If
(3) ( 1 ) (2)
and are in normal
state, check amount of refrigerant
Charge proper amount of r.:%ger·
ant