2005 TOYOTA AVENSIS air conditioning

E65563
I22117
Condition
: Air conditioning system periodically repeats proper and improper function.
± HEATER & AIR CONDITIONERREFRIGERANT
55±33
AVENSIS REPAIR MANUAL (RM1018E)
(1) When the refrigerant volume is proper:
Gauge reading:
Low pressure side:
0.28 ± 0.4 MPa (2.8 ± 4.0 kgf/cm
2)
High pressure side:
1.3 ± 1.6 MPa (13 ± 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 refrigerant filter 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 refrigerant filter 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

I22118
Condition: Air conditioning system does not function effectively.
I22119
Condition : Air conditioning system does not function effectively. 55±34
± HEATER & AIR CONDITIONERREFRIGERANT
AVENSIS REPAIR MANUAL (RM1018E)
(3) When cooling is insufficient:
SymptomProbable causeDiagnosisCorrective Actions

Pressure is low on both low and
high pressure sides

Cooling performance is insuffi-
cient
Gas leakage in refrigeration sys-
tem
Insufficient 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 unit
Refrigerant flow is obstructed by
dirt in condenserCondenser is cloggedReplace condenser

I22120
Condition: Air conditioning system does not function. (Sometimes it may function)
I22121
Condition : Air conditioning system does not function effectively.
± HEATER & AIR CONDITIONERREFRIGERANT
55±35
AVENSIS REPAIR MANUAL (RM1018E)
(5) When the refrigerant does not circulate:
SymptomProbable causeDiagnosisCorrective Actions

Vacuum is indicated on low pres-
sure side, and extreamly low pres-
sure is indicated on high pressure
side

Frost or dew is seen on piping on
both sides of condenser or refrig-
erant filter

Refrigerant flow is obstructed by
moisture or dirt in refrigeration sys-
tem

Refrigerant filter is clogged
Refrigerant does not circulate
(1) Check the refrigerant filter
(2) Clean out dirt on refrigerant fil-
ter by blowing air
(3) Replace condenser
(4) Vacuum air and supply proper
amount of new refrigerant
(5) If refrigerant filter is damaged,
replace it
(6) When the refrigerant is overcharged or cooling of
condenser is insufficient:
SymptomProbable causeDiagnosisRemedy

Pressure is extreamly high on
both low and high pressure sides
Excessive refrigerant

Cooling performance of con-
denser is insufficient
Excessive refrigerant

Cooling performance of con-
denser is insufficient

Magnet valve assy is defective
(1) Clean condenser fins
(2) Check condenser fan motor
operation
(3) If (1) and (2) are in normal
state, vacuum and supply proper
amount of refrigerant
(4) If pressure is still high even af-
ter supplying refrigerant, replace
the magnet valve assy

I22122
Condition
NOTE : These gauge indica-
tions occur when the refrigera-
tion system opens and the re-
frigerant is charged without
vacuuming. : Air conditioning system does not function.
I22123
Condition : Air conditioning system does not function effectively. 55±36
± HEATER & AIR CONDITIONERREFRIGERANT
AVENSIS REPAIR MANUAL (RM1018E)
(7) When there is air in the refrigeration system:
SymptomProbable causeDiagnosisCorrective Actions
Pressure is extreamly high on both
low and the high pressure sidesAir in refrigeration system

There is air in refrigeration sys-
tem

Vacuuming is insufficient(1) Check if compressor oil is dirty
or insufficient
(2) Vacuum air and supply new re-
frigerant
(8) When the refrigerant filter is defective:
SymptomProbable causeDiagnosisCorrective Actions

Pressure is extreamly high on
low pressure side

Pressure is extreamly high on
high pressure side
Trouble with refrigerant filterExcessive refrigerantReplace refrigerant filter

I22124
Condition : Air conditioning system does not function.
I22123
Condition: Air conditioning system does not function effectively.
± HEATER & AIR CONDITIONERREFRIGERANT
55±37
AVENSIS REPAIR MANUAL (RM1018E)
(9) When the compressor is defective:
SymptomProbable causeDiagnosisCorrective Actions

Pressure is extreamly high on
low pressure side

Pressure is extreamly low on
high pressure side
Internal leak from compressor

Compression failure

Leakage from damaged valve or
broken sliding parts
Replace or replace compressor
(10) When the magnet valve assy is defective:
SymptomProbable causeDiagnosisCorrective Actions

Pressure is extreamly high on
low pressure sideInternal leak from magnet valve
assyMagnet valve assy failureReplace magnet valve assy

550ZI±01
I35437
Connector ºBº Wire harness side:
Connector ºAº
I36091
Connector ºBº From back side:
Connector ºAº 55±22
± HEATER & AIR CONDITIONERHOT GAS TYPE POWER HEATER SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
HOT GAS TYPE POWER HEATER SYSTEM
ON±VEHICLE INSPECTION
1. INSPECT AIR CONDITIONING CONTROL ASSY
(a) Disconnect the connector from air conditioning control assy and inspect the connector on wire harness
side, as shown in the table.
Symbols (Terminal No.)Wiring ColorConditionSTD Voltage (V)
SOL+ (B17) ±
GND (B40)R ± W±BStart engine
Compressor: OperatePulse generation
MGV (B14) ±
GND (B40) (*1)R±Y ± W±BStart engine
Compressor: OperatePulse generation
HOT GAS IN (B22) ±
GND (B40) (*1)R±Y ± W±BIG SW: ON
Hot Gas SW: ONBattery positive voltage
If circuit is not as specified, try replacing the air conditioning control assy with a new one. If the circuit is not
as specified, inspect the circuits connected to the other parts.
(b) Connect the connector to air conditioning control assy and inspect wire harness side connector from
the back side, as shown in the table.
Symbols (Terminal No.)ConditionSpecified condition
HI (A4) ± GND (A1)Ignition switch ON
Turn blower dial: OFF
HINo continuity
Continuity
M2 (A5) ± GND (A1)Ignition switch ON
Turn blower dial: OFF
M2No continuity
Continuity
M1 (A6) ± GND (A1)Ignition switch ON
Turn blower dial: OFF
M1No continuity
Continuity
GND (A1) ± Body groundIgnition switch ON
Turn blower dial: OFF
LONo continuity
Continuity

550ZD±01

E61224
E32877
± HEATER & AIR CONDITIONERAIR CONDITIONING SYSTEM
55±7
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION
1. INSPECT COMPRESSOR (MANUAL AIR
CONDITIONING)
(a) Measure the resistance between terminals 1 and 2.
Resistance: 10 to 11
at 25
C (77
F)
If the resistance is not as specified, replace the compressor
assy.
2. INSPECT BLOWER RESISTOR (MANUAL AIR
CONDITIONING)
(a) Measure resistance between terminals, as shown in the
table.
Tester connectionSpecified condition
1 ± 21.404 to 1.716

1 ± 30.504 to 0.616

1 ± 43.024 to 3.696

If resistance is not as specified, replace the blower resistor.

I36092
LHD Models:REC
FRS
I36094
I36093
RHD Models:
RECFRS
I36094
55±8
± HEATER & AIR CONDITIONERAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3. INSPECT RECIRCULATION DAMPER SERVO
SUB±ASSY (MANUAL AIR CONDITIONING)
(a) Inspect servomotor operation.
(1) Connect the positive (+) lead from the battery to ter-
minal 3 and negative (±) lead to terminal 2, then
check that the arm turns to ºFRSº side smoothly.
(2) Connect the positive (+) lead from the battery to ter-
minal 3 and negative (±) lead to terminal 1, then
check that the arm turns to ºRECº side smoothly.
If operations are not as specified, replace the mode damper
servomotor.