2002 TOYOTA AVENSIS condenser

A76707
Water By±pass Hose No. 2
Radiator Hose Inlet
Heater Inlet Water Hose

Gasket
Exhaust Manifold
Manifold StayExhaust Manifold
Heat Insulator No. 1

Gasket
Engine Coolant
Temperature Sensor

Non±reusable part
N´m (kgf´cm, ft´lbf) : Specified torque
20 (204, 15)
9.0 (92, 80 in.
lbf)
37 (377, 27)
18 (184, 13)
49 (500, 36)
Clamp Bracket
10 (102, 7)
Radio Setting Condenser
V±Ribbed Idler Assy No. 1
Tube
18 (184, 13)
12 (122, 9)
Manifold Stay No. 2
49 (500, 36)
37 (377, 27)18 (184, 13)
39.2 (400, 29)
14±26
± ENGINE MECHANICALPARTIAL ENGINE ASSY (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)

A76722
A76723
A64033
A64034
A64034
± ENGINE MECHANICALPARTIAL ENGINE ASSY (1ZZ±FE/3ZZ±FE)
14±37
AVENSIS REPAIR MANUAL (RM1018E)
85. REMOVE EXHAUST MANIFOLD HEAT INSULATOR
NO.1
(a) Disconnect the heated oxygen sensor connector.
(b) Remove the 3 bolts and the nut, and then remove the ex-
haust manifold heat insulator.
86. REMOVE EXHAUST MANIFOLD
(a) Remove the 5 nuts, then remove the exhaust manifold
and the gasket.
87. REMOVE ENGINE COOLANT TEMPERATURE
SENSOR
(a) Using SST, remove the engine coolant temperature sen-
sor.
SST 09817±33190
88. REMOVE RADIO SETTING CONDENSER
(a) Remove the bolt and the condenser.
89. REMOVE WATER BY±PASS HOSE NO.2
90. REMOVE RADIATOR HOSE INLET
91. REMOVE HEATER INLET WATER HOSE
92. REPLACE PARTIAL ENGINE ASSY
93. INSTALL RADIO SETTING CONDENSER
(a) Install the condenser with the bolt.
Torque: 10 N
m (102 kgf
cm, 7 ft
lbf)

I36091
From Back Side:
Connector ºBº Connector ºAº 55±4
± HEATER & AIR CONDITIONERAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
(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
RDEFIN (B4) ±
GND (B40) (*1)
Ignition switch : ON
Rear DEF switch: ON10 to 14 V
S5±2 (B5) ± GND (B40)Ignition switch: ON5.0 V
S5±3 (B6) ± GND (B40)Ignition switch: ON5.0 V
S5 (B7) ± GND (B40)Ignition switch: ON5.0 V
MPX+ (B9) ± GND (B40)Communication circuit±
FRS (B10) ± GND (B40)Ignition switch: ON
R/F switch: RECIRCURATION  FRESH10 to 14  0 V
REC (B11) ± GND (B40)Ignition switch: ON
R/F switch: FRESH  RECIRCURATION10 to 14  0 V
AOD (B12) ± GND (B40)Ignition switch: ON
Mode control dial: DEF10 to 14 V
AOF (B13) ± GND (B40)Ignition switch: ON
Mode control dial: FACE10 to 14 V
MGV (B14) ±
GND (B40) (*2)
Start engine
Hot gas heater: Operate10 to 14  0 V
AMH (B15) ± GND (B40)Ignition switch: ON
Temperature control dial: MAX HOT10 to 14 V
AMC (B16) ± GND (B40)Ignition switch: ON
Temperature control dial: MAX COOL10 to 14 V
SOL+ (B17) ± GND (B40)Start engine
Compressor: OperatePulse generation
ILL+ (B21) ±
GND (B40)
Ignition switch: ON
Turn light control switch: OFF  ON0  10 to 14 V
HOTGASIN (B22) ±
GND (B40) (*2)
Ignition switch: ON
Heater switch: ON10 to 14 V
CFAN (B23) ± GND (B40)Start engine
Condenser fan: operate10 to 14  0 V
RPTC1 (B28) ± GND (B40)PTC heater: OperateAbove 7.5 V
MPX± (B29) ± GND (B40)Communication circuit±
TE (B31) ± GND (B40)Evaporator temperature: 0
C (32
F) 15
C (59
F)2.0 to 2.4  1.4 to 1.8 V

550RQ±02
55±6
±
HEATER & AIR CONDITIONER AIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. The numbers \
indicate the priority of the likely
cause of the problem. Check each part in order. If necessary, replace these parts.
SymptomSuspect AreaSee page
Whole functions of the A/C system does not operate.
4. ECU±B fuse
5. A/C amplifier assy
6. Wire harness or connector±
55±3 ±
Air Flow Control : No blower operation
1. Blower resistor
2. Heater relay
3. Blower w/ fan motor sub±assy
4. A/C amplifier assy
5. Wire harness or connector55±7
55±7
55±7
55±3±
Air Flow Control : No blower control
1. Blower w/fan motor sub±assy
2. Blower resistor
3. A/C amplifier assy
4. Wire harness or connector55±7
55±7
55±3
±
Air Flow Control : Insufficient air out
1. Blower w/fan motor sub±assy
2. Blower resistor
3. A/C amplifier assy
4. Wire harness or connector55±7
55±7
55±3±
Temperature Control : No cool air comes out
1. Volume of refrigerant
2. Drive belt tension
3. Refrigerant pressure
4. Cooler compressor assy
5. Pressure sensor
6. Condenser fan
7. Air mix damper servo sub±assy
8. A/C amplifier assy
9. Wire harness or connector55±24
55±46
55±2455±7
55±3 ±
55±7
55±3 ±
Temperature Control : No warm air comes out
1. Engine coolant volume
2. Cooler thermistor No.1
3. Air mix damper servo sub±assy
4. A/C amplifier assy
5. Heater radiator unit sub±assy
6. Wire harness or connector55±7
55±3
55±7
55±3±
±
Temperature Control : Output air is warmer or cooler than the set
temperature or response is slow.1. A/C amplifier assy
2. Air mix damper servo sub±assy
3. Air mix level55±3
55±7
±
Temperature Control : No temperature control
1. A/C amplifier assy
2. Air mix damper servo sub±assy
3. Air mix level55±3
55±7±
No air inlet control
1. Recirculation damper servo sub±assy
2. A/C amplifier assy
3. Wire harness or connector55±7
55±3±
No air outlet control
1. A/C amplifier assy
2. Mode damper servo sub±assy
3. Mode lever55±3
55±7±
Engine idle up does not occur, or is continuous
1. Idle up switch
2. Cooler compressor assy
3. A/C amplifier assy
4. Wire harness or connector55±7
55±7
55±3±
Brightness does not changes when rheostat volume or light con-
trol switch it turned.1. Illumination light system
2. A/C amplifier assy
3. Wire harness or connector±
55±3 ±

550ZJ±01
I36136
I32396
E
IN
IG
± HEATER & AIR CONDITIONERHOT GAS TYPE POWER HEATER SYSTEM
55±23
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION
1. INSPECT W/RECEIVER CONDENSER ASSY
(a) Apply voltage between terminals and check that the re-
frigerant passages switch.
2. INSPECT HETER SWITCH ASSY
(a) Check that the continuity to the follwing terminals.
Standard:
Heater switch conditionConnecting terminalsStandard value
ONIG ± INContinuity
OFFIG ± INNo continuity
ONIG ± EContinuity
OFFIG ± ENo continuity

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-
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 A/C 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. 55±28
± HEATER & AIR CONDITIONERREFRIGERANT
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 expan-
sion valve

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

Refrigerant flow is obstructed by
gas leak from expansion valve
Refrigerant does not circulate
(1) Check the expansion valve
(2) Clean out dirt on expansion
valve by blowing air
(3) Replace condenser
(4) Vacuum and supply proper
amount of new refrigerant
(5) For gas leakage from expan-
sion valve, replace expansion
valve
(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

RHD AZ engine series:
No air bubbles are seen through
sight glass even when engine rpm
lowers

Excessive refrigerant

Cooling performance of con-
denser is insufficient
Excessive refrigerant

Cooling performance of con-
denser is insufficient
(1) Clean condenser
(2) Check condenser fan motor
operation
(3) If (1) and (2) are in normal
state, check the amount of refrig-
erant and supply proper amount of
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