Refrigerant On-Vehicle Inspection - Toyota Avensis ZZT251 2003 Service And Repair Manual

55–24
REFRIGERANT
ON–VEHICLE INSPECTION
Sight Glass
Item Symptom
1 Bubbles exist
2 No bubbles exist
No temperature difference between com-
3
pressor inlet and outlet
Considerable temperature difference be-
4
tween compressor inlet and outlet
Immediately after air conditioning is turned
5
off, refrigerant remains clear
Immediately after air conditioning is turned
6 off, refrigerant foams and then becomes
clear
*: Bubbles in the sight glass with ambient temperatures higher than usual can be considered normal if cooling
is sufficient.
AVENSIS REPAIR MANUAL (RM1018E)
HEATER & AIR CONDITIONER
1. RHD AZ Engine series:
INSPECT REFRIGERANT VOLUME
(a) Observe the sight glass on the cooler refrigerant liquid
pipe A.
Test conditions:
I35292
Amount of refrigerant
Insufficient*
Empty, insufficient or excessive
Empty or nearly empty
Proper or excessive
Excessive
Proper
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– REFRIGERANT
Y
All doors are fully open.
Y
Temperature control dial is at "MAX. COOL".
Y
Engine is running at 1,500 rpm.
Y
Blower speed control switch is at "HI".
Y
A/C switch is ON.
(1) Check for gas leakage and repair if nec-
essary
(2) Add refrigerant until bubbles disappear
Refer to 3 and 4
(1) Check for gas leakage and repair if nec-
essary
(2) Add refrigerant until bubbles disappear
Refer to 5 and 6
(1) Discharge refrigerant
(2) Vacuum and supply proper amount of
new refrigerant
550Z7–01
Corrective Actions
–