Toyota Celica 2005, Repair Manual

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I12988
Sight Glass
AC2GT − 05
− AIR CONDITIONING AIR CONDITIONING SYSTEM
AC − 3
2005 CELICA (RM1131U)
ON − VEHICLE INSPECTION
1. INSPECT REFRIGERANT VOLUME
Observe the sight glass on the liquid tube.
Test conditions:
S
Running engine at 1,500 rpm
S
Blower speed control switch at ”HI” position
S
A/C switch ON
S
Temperature control dial at ”COOL” position
S
Fully open the doors
Item Symptom Amount of refrigerant Remedy
1 Bubbles present in sight glass Insufficient*
(1) Check for gas leakage with gas leak de-
tector and repair if necessary
(2) Add refrigerant until bubbles disappear
2 No bubbles present in sight glass None, sufficient or too much Refer item 3 and 4
3
No temperature difference between com-
pressor inlet and outlet
Empty or nearly empty
(1) Check for gas leakage with gas leak de-
tector and repair if necessary
(2) Add refrigerant until bubbles disappear
4
Temperature between compressor inlet and
outlet is noticeably different
Correct or too much Refer to items 5 and 6
5
Immediately after air conditioning is turned
off, refrigerant in sight glass stays clear
Too much
(1) Discharge refrigerant
(2) Evacuate air and charge proper amount
or purified refrigerant
6
When air conditioning is turned off, refriger-
ant foams and then stays clear
Correct −
*: Bubbles in the sight glass with ambient temperatures higher than usual can be considered normal if cooling
is sufficient.
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