2005 TOYOTA AVENSIS air conditioning

I30157
I30162
To ºMAX HOTº
To ºMAX COOLº
± HEATER & AIR CONDITIONERAIR CONDITIONING SYSTEM
55±9
AVENSIS REPAIR MANUAL (RM1018E)
4. INSPECT AIRMIX DAMPER SERVO SUB±ASSY
(MANUAL AIR CONDITIONING)
(a) Inspect servomotor operation.
(1) Connect the positive (+) lead from the battery to ter-
minal 4 and negative (±) lead to terminal 5, then
check that the arm turns to ºMAX COOLº side
smoothly.
(2) Connect the positive (+) lead from the battery to ter-
minal 5 and negative (±) lead to terminal 4, then
check that the arm turns to ºMAX HOTº side
smoothly.
If operations are not as specified, replace the servomotor.

I30157
I30116
To ºDEFº
To ºFACEº 55±10
± HEATER & AIR CONDITIONERAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
5. INSPECT MODE DAMPER SERVO SUB±ASSY
(MANUAL AIR CONDITIONING)
(a) Inspect servomotor operation.
(1) Connect the positive (+) lead from the battery to ter-
minal 4 and negative (±) lead to terminal 5, then
check that the arm turns to ºDEFº side smoothly.
(2) Connect the positive (+) lead from the battery to ter-
minal 5 and negative (±) lead to terminal 4, then
check that the arm turns to ºFACEº side smoothly.
If operations are not as specified, replace the servomotor.




E50650
I30145
40
30
20
10
8
6
4
2
0
±30 ±20 ±10 0 10 20 30 50 60 70 8040 Resistance (k
)
Temperature (
C)
I30151
2
1
LHD
RHD
± HEATER & AIR CONDITIONERAIR CONDITIONING SYSTEM
55±11
AVENSIS REPAIR MANUAL (RM1018E)
6. INSPECT COOLER THERMISTOR NO.1 (MANUAL AIR
CONDITIONING)
(a) Check the resistance between terminal 1 and 2 of cooler
thermistor No. 1 at each temperature, as shown in the
graph.
Standard: 1,500
at 25
C (77
F)
HINT:
As the temperature increases, the resistance decreases.
If resistance value is not as specified, replace the sensor.
7. INSPECT BLOWER W/FAN MOTOR SUB±ASSY
(MANUAL AIR CONDITIONING)
(a) Connect the positive (+) lead from the battery to terminal
1 and negative (±) to terminal 2, then check that the motor
operation smoothly.
If operation is not as specified, replace the blower motor.

E32993
55±12
± HEATER & AIR CONDITIONERAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
8. INSPECT HEATER RELAY (MANUAL AIR
CONDITIONING)
Terminal No.Specified condition
No continuity
3±5Less than 1

(When battery voltage applied to terminals 1 and 2.)
Less than 1

3±4No continuity
(When battery voltage applied to terminals 1 and 2.)
1±2Constant continuity
If continuity is not as specified, replace the rear cooler relay.

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 ±

I353162 Claws
I35318
I35319Clamp
I35320
55±66
± HEATER & AIR CONDITIONERBLOWER ASSY
AVENSIS REPAIR MANUAL (RM1018E)
5. REMOVE AIR FILTER CASE
(a) Release the 2 claw fittings and remove the air filter case.
6. REMOVE AIR FILTER
7. REMOVE RECIRCULATION DAMPER SERVO
SUB±ASSY
(a) Remove the 2 screws and the recirculation damper servo
sub±assy.
8. REMOVE AIR CONDITIONING WIRENO1 (MANUAL
AIR CONDITIONING)
(a) Disconnect the connector.
(b) Release the clump and remove the air conditioning wire
No.1.
9. REMOVE COOLER WIRING NO.1 (AUTO AIR CONDITIONING)
HINT:
Disconnection of the cooler wiring No.1 is the same as the air conditioning wire No.1.
10. REMOVE BLOWER RESISTOR (MANUAL AIR
CONDITIONING)
(a) Remove the 2 screws and the blower resistor.

I35321
I35322
I35317
I36813
I35314
± HEATER & AIR CONDITIONERBLOWER ASSY
55±67
AVENSIS REPAIR MANUAL (RM1018E)
11. REMOVE BLOWER MOTOR CONTROL (AUTO AIR
CONDITIONING)
(a) Remove the 2 screws and the blower motor control.
12. REMOVE BLOWER W/FAN MOTOR SUB±ASSY
(a) Remove the 3 screws and the blower w/ fun motor sub±
assy.
13. INSTALL AIR FILTER
(a) Install the air filter as shown in the illustration.
14. INSTALL BLOWER ASSY
(a) Install the blower assy with the claw fitting.
(b) Install the blower assy with the 2 bolts and the 2 screws.
Torque: 9.8 N
m (100 kgf
cm, 87 in.
lbf) (Bolt)
(c) Install the 2 nuts.
(d) Connect the connectors.

550YQ±01
I35277
Blower Assy
Air Duct No.2
Recirculation Damper Servo Sub±assy
Air Filter
Air Filter Case
Blower w/ fan Motor Sub±assy
Manual A/C:
Blower Resistor Air Conditioning Wire No.1
Auto A/C:
Blower Motor Control
9.8 (100, 87 in.
lbf)
Cooler Wiring No.1Manual A/C:
N
m (kgf
cm, ft
lbf): Specified torque
55±64
± HEATER & AIR CONDITIONERBLOWER ASSY
AVENSIS REPAIR MANUAL (RM1018E)
BLOWER ASSY
COMPONENTS