Page 2897 of 5135
I34979
Nm (kgfcm, ftlbf) : Specified torqueCooler Refrigerant Suction Hose No.1
Liquid Tube Sub±assy A
Cooler Refrigerant Discharge Hose No.1
5.4 (55, 47 in.lbf)
5.4 (55, 47 in.lbf)
9.8 (100, 87 in.lbf)
LHD:
1CD±FTV:
w/o Hot Gas Heater:
9.8 (100, 87 in.lbf)
Suction Servic Valve
9.8 (100, 87 in.lbf)
± HEATER & AIR CONDITIONERREFRIGERANT LINE
55±43
AVENSIS REPAIR MANUAL (RM1018E)
Page 2898 of 5135
I34980Nm (kgfcm, ftlbf) : Specified torque Liquid Tube Sub±assy A
Cooler Refrigerant Discharge Hose No.1
9.8 (100, 87 in.lbf)
LHD:
1CD±FTV:
w/ Hot Gas Heater:
Suction Servic Valve
5.4 (55, 47 in.lbf)
9.8 (100, 87 in.lbf)
9.8 (100, 87 in.lbf)
9.8 (100, 87 in.lbf)
5.4 (55, 47 in.lbf)
Discharge Tube Sub±assy
9.8 (100, 87 in.lbf)
Cooler Refrigerant Suction Hose No.1
55±44
± HEATER & AIR CONDITIONERREFRIGERANT LINE
AVENSIS REPAIR MANUAL (RM1018E)
Page 2899 of 5135
I34981
Nm (kgfcm, ftlbf) : Specified torque Liquid Tube Sub±assy B
RHD:
1CD±FTV:
w/ Hot Gas Heater:
5.4 (55, 47 in.lbf)
9.8 (100, 87 in.lbf)
5.4 (55, 47 in.lbf)
Discharge Tube Sub±assy
5.4 (55, 47 in.lbf)
9.8 (100, 87 in.lbf)
Cooler Refrigerant Discharge Hose No.1
9.8 (100, 87 in.lbf)
9.8 (100, 87 in.lbf)
Liquid Tube Sub±assy A
Cooler Refrigerant Suction Hose No.1
13 (132, 9.5)
± HEATER & AIR CONDITIONERREFRIGERANT LINE
55±45
AVENSIS REPAIR MANUAL (RM1018E)
Page 2900 of 5135

550Z8±01
I37091
Over charged Mean
value
in proper
range
Hight
Pressure
Refrigerant Amount 30 g (1.06 oz.) Amount to be charged
Sub±cool system RHD AZ Engine series: 55±38
± HEATER & AIR CONDITIONERREFRIGERANT
AVENSIS REPAIR MANUAL (RM1018E)
REPLACEMENT
1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM
(a) Turn the A/C switch ON.
(b) Operate the cooler compressor at the engine rpm of approx. 1,000 for 5 to 6 minuites to circulate the
refrigerant and collect the compressor oil remaining in each component into the cooler compressor as
much as possible.
(c) Shut off the engine.
(d) Let the refrigerant gas out.
SST 07110±58060 (07117±58080, 07117±58090, 07117±78050, 07117±88060, 07117±88070,
07117±88080)
2. CHARGE REFRIGERANT
(a) Using a vacuum pump, perform vacuuming.
(b) Charge refrigerant, HFC±134a (R134a).
Standard: 440 30 g (15.51 1.06 oz.)
SST 07110±58060 (07117±58060, 07117±58070, 07117±58080, 07117±58090, 07117±78050,
07117±88060, 07117±88070, 07117±88080)
3. WARM UP ENGINE
4. INSPECT LEAKAGE OF REFRIGERANT
(a) Using a gas leak detector, check for leakage of the refrigerant.
NOTICE:
1CD±FTV Hot gas heater:
Since the system uses a refrigerant filter (fixed valve), sound of the refrigerant circulation (hissing
sound) can be heard for approx. 30 seconds after turning the A/C off. This is merely a sound of bal-
ancing the low pressure with the high pressure, not a sound of abnormality.
Page 2901 of 5135

550Z7±01
I35292
Sight Glass
55±24
± HEATER & AIR CONDITIONERREFRIGERANT
AVENSIS REPAIR MANUAL (RM1018E)
REFRIGERANT
ON±VEHICLE INSPECTION
1. RHD AZ Engine series:
INSPECT REFRIGERANT VOLUME
(a) Observe the sight glass on the cooler refrigerant liquid
pipe A.
Test conditions:
All doors are fully open.
Temperature control dial is at ºMAX. COOLº.
Engine is running at 1,500 rpm.
Blower speed control switch is at ºHIº.
A/C switch is ON.
ItemSymptomAmount of refrigerantCorrective Actions
1Bubbles existInsufficient*
(1) Check for gas leakage and repair if nec-
essary
(2) Add refrigerant until bubbles disappear
2No bubbles existEmpty, insufficient or excessiveRefer to 3 and 4
3No temperature difference between com-
pressor inlet and outletEmpty or nearly empty
(1) Check for gas leakage and repair if nec-
essary
(2) Add refrigerant until bubbles disappear
4Considerable temperature difference be-
tween compressor inlet and outletProper or excessiveRefer to 5 and 6
5Immediately after air conditioning is turned
off, refrigerant remains clearExcessive
(1) Discharge refrigerant
(2) Vacuum and supply proper amount of
new refrigerant
6
Immediately after air conditioning is turned
off, refrigerant foams and then becomes
clear
Proper±
*: Bubbles in the sight glass with ambient temperatures higher than usual can be considered normal if cooling
is sufficient.
Page 2902 of 5135
I30081
0.5 (5.0)
0.4 (4.0)
0.3 (3.0)
0.2 (2.0)MPa (kgf/cm
2) Pressure on low pressure side
Blower HI Zone
Blower LO Zone
MPa (kgf/cm
2) Pressure on HI
pressure side 0.5 (5.0) 1.0 (10.0) 1.5 (15.0) 2.0 (20.0)1.06 (10.9)
0.27 (2.85)
0.22 (2.25)
0.2 (2.1)
0.14 (1.5)1.2 (12.3)
1.25 (12.8)
1.32 (13.5)
± HEATER & AIR CONDITIONERREFRIGERANT
55±25
AVENSIS REPAIR MANUAL (RM1018E)
2. w/o Hot gas heater:
INSPECT REFRIGERANT PRESSURE WITH MAN-
IFOLD GAUGE SET
(a) This is a method to specify the trouble area by using a
manifold gauge set. Read the manifold gauge pressure
when the following conditions are fullfilled.
Test conditions:
Engine has been warmed up.
All doors are fully open.
A/C switch is ON.
Engine is running at 1,500 rpm.
Air inlet mode selector switch is at RECIRE.
Temperature control dial is at ºMAX. COOLº.
Blower speed control switch is at ºHIº.
Temperature at the air inlet is 30 ± 35 C (86
± 95 F).
Gauge readings (Reference)
Page 2903 of 5135
E50573
I22117
Condition : Air conditioning system periodically repeats proper and improper function. 55±26
± HEATER & AIR CONDITIONERREFRIGERANT
AVENSIS REPAIR MANUAL (RM1018E)
(1) When the refrigerant volume is proper:
Gauge reading:
Low pressure side:
0.15 ± 0.25 MPa (1.5 ± 2.5 kgf/cm
2)
High pressure side:
1.37 ± 1.57 MPa (14 ± 16 kgf/cm
2)
(2) When there is moisture in the refrigeration system:
SymptomProbable causeDiagnosisRemedy
During operation, pressure on low
pressure side cycles between nor-
mal and vacuum
Moisture in refrigeration system
freezes at expansion valve orifice,
causing a temporary stop of cycle.
However, when it melts, normal
state is restored Drier is overly saturated
Moisture in refrigeration system
freezes at expansion valve orifice
and blocks circulation of refriger-
ant(1) Replace cooler drier
(2) Remove moisture in cycle by
repeatedly vacuuming
(3) Supply proper amount of new
refrigerant
Page 2904 of 5135

I22118
Condition: Air conditioning system does not function effectively.
I22119
Condition: Air conditioning system does not function effectively.
± HEATER & AIR CONDITIONERREFRIGERANT
55±27
AVENSIS REPAIR MANUAL (RM1018E)
(3) When cooling is insufficient:
SymptomProbable causeDiagnosisCorrective Actions
Pressure is low on both low and
high pressure sides
RHD AZ engine series:
Bubbles are seen through sight
glass continuously
Cooling performance is insuffi-
cient
Gas leakage in refrigeration sys-
temInsufficient refrigerant
Refrigerant leakage
(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.
(4) When the circulation of the refrigerant is poor:
SymptomProbable causeDiagnosisCorrective Action
Pressure is low on both low and
high pressure sides
Frost exists on piping from con-
denser to A/C unit
Refrigerant flow is obstructed by
dirt in condenserCondenser is cloggedReplace condenser