Page 11 of 1897
AC0YE-02
I12953I12946
I12964
Auto A/C:
Ambient Temperature
Sensor
Pressure Switch
Compressor
Relay Block No. 8
No. 2 Cooling Fan Relay
No. 3 Cooling Fan RelayJunction Block No. 8
Heater Main Relay
Magnetic Clutch Relay
Condenser Fan
Condenser
Auto A/C:
Solar Sensor
A/C Control Assembly
Auto A/C:
A/C Amplifier
Manual A/C:
A/C Switch Manual A/C:
Blower Speed Control Switch
Manual A/C:
Mode Control Switch
Auto A/C:
Room Temperature Sensor
A/C Unit
Heater Radiator
Evaporator
Expansion Valve
Evaporator Temp. Sensor
Auto A/C
Air Mix Servomotor
Air Outlet Servomotor
Blower Unit
Blower Motor
Manual A/C:
Blower Resistor
Auto A/C:
Blower Motor Linear Controller
Air inlet Servomotor
Manual A/C:
Multi Display (Built
into the A/C amplifier)
AC-14
- AIR CONDITIONINGAIR CONDITIONING SYSTEM
1936 Author: Date:
2001 AVALON (RM808U)
LOCATION
Page 18 of 1897
N14519
Drain Hose
- AIR CONDITIONINGAIR CONDITIONING SYSTEM
AC-9
1931 Author: Date:
2001 AVALON (RM808U)
3. INSPECT FOR LEAKAGE OF REFRIGERANT
(a) Perform in these conditions:
Stop engine.
Secure good ventilation (If the gas leak detector
may not react to volatile gases which are not refrig-
erant, such as evaporated gasoline and exhaust
gas.)
Repeat the test 2 or 3 times.
Make sure that there is some refrigerant remaining
in the refrigeration system.
When compressor is OFF: approx. 392 - 588 kPa
(4 - 6 kgf/ cm
2, 57 - 85 psi)
(b) Bring the gas leak detector close to the drain hose before
performing the test.
HINT:
After the blower motor has stopped, leave the cooling unit
for more than 15 minutes.
Expose the gas leak detector sensor under the drain
hose.
When bring the gas leak detector close to the drain hose,
make sure that the gas leak detector does not react to the
volatile gases.
If such reaction is unavoidable, the vehicle must be lifted up.
(c) If gas leak is not detected on the drain hose, remove the
blower resistor from the cooling unit. Then insert the gas
leak detector sensor into the unit and perform the test.
(d) Disconnect the connector and leave the pressure switch
for approx. 20 minutes. Then bring the gas leak detector
close to the pressure switch and perform the test.
(e) Bring the gas leak detector close to the refrigerant lines
and perform the test.
Page 23 of 1897
I12952
Air DuctHeater Radiator
Unit Case LH
Evaporator
Unit Case RHExpansion Valve
Liquid and
Suction Tube
Air Outlet Servomotor
Air Vent Duct
Auto A/C:
Aspirator HoseDrain Hose
Evaporator Temp.
Sensor
5.4 (55, 48 in.´lbf)
N´m (kgf´cm, ft´lbf) : Specified torque
Non-reusable part
x 10
O-Rings
AspiratorAuto A/C:
Air Mix Servomotor
(Passenger side)
O-Rings
Auto A/C
Air Mix Servomotor
(Driver side)
Air Duct
Plate
- AIR CONDITIONINGAIR CONDITIONING UNIT
AC-27
1949 Author: Date:
2001 AVALON (RM808U)
Page 24 of 1897
AC2HX-01
I14049
I14050
AC-30
- AIR CONDITIONINGAIR CONDITIONING UNIT
1952 Author: Date:
2001 AVALON (RM808U)
DISASSEMBLY
1. REMOVE AIR VENT DUCT
2. REMOVE EVAPORATOR TEMP. SENSOR
Pull out the sensor.
3. REMOVE EXPANSION VALVE
Using a hexagon wrench, remove the 2 bolts and separate the
evaporator, expansion valve, liquid and suction tube.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
HINT:
At the time of reassembly, please refer to the following item.
Lubricate 4 new O-rings with compressor oil and install them
to the valve.
4. Auto A/C only:
REMOVE BLOWER MOTOR LINEAR CONTROLLER
Remove the 2 screws and controller.
5. REMOVE BLOWER RESISTOR
Remove the 2 screws and blower resistor.
6. Auto A/C only:
REMOVE AIR MIX SERVOMOTOR (Driver side)
Remove the 3 screws and servomotor.
7. Auto A/C only:
REMOVE AIR MIX SERVOMOTOR (Passenger side)
Remove the 3 screws and servomotor.
8. REMOVE AIR OUTLET SERVOMOTOR
Remove the 3 screws and servomotor.
9. REMOVE ASPIRATOR
Remove the screw and aspirator.
10. REMOVE HEATER RADIATOR
(a) Remove the air duct.
(b) Remove the 2 screws and 2 clamps.
(c) Pull out the heater radiator.
Page 26 of 1897
AC2G0-01
I03338
Sensor
Ice
10 cm
(0.39 in.)
ThermistorOhmmeter
Z04352
(W)
0 500 1,000 1,500 2,000
2,500
3,000 3,500 4,000 4,500 5,000
0510152025(°C)
32 41 50 59 68 77 (°F)
AC-32
- AIR CONDITIONINGAIR CONDITIONING UNIT
1954 Author: Date:
2001 AVALON (RM808U)
INSPECTION
1. CHECK EVAPORATOR FINS FOR BLOCKAGE
If the fins are clogged, clean them with compressed air.
NOTICE:
Never use water to clean the evaporator.
2. CHECK FITTINGS FOR CRACKS OR SCRATCHES
Repair as necessary.
3. INSPECT EVAPORATOR TEMPERATURE SENSOR
(a) Place the sensor in cold water, and while changing the
temperature of water, measure resistance at the connec-
tor and at the same time, measure temperature of water
with a thermometer.
(b) Compare the 2 readings on the chart.
If resistance is not as specified, replace the thermistor.
Page 32 of 1897
I12301
AC2GB-01
I12302
- AIR CONDITIONINGAIR MIX SERVOMOTOR (Auto A/C)
AC-59
1981 Author: Date:
2001 AVALON (RM808U)
AIR MIX SERVOMOTOR (Auto A/C)
INSPECTION
1. Drive side:
REMOVE AIR MIX SERVOMOTOR
(a) Remove the lower No. 1 panel.
(b) Remove the lower LH panel insert.
(c) Disconnect the connector.
(d) Remove the 3 screws and the servomotor.
2. INSPECT AIR MIX DAMPER POSITION SENSOR CIR-
CUIT (See page DI-796)
3. INSPECT AIR MIX CONTROL SERVOMOTOR CIRCUIT
(See page DI-799)
4. Passenger side:
REMOVE AIR MIX SERVOMOTOR
(a) Remove the blower unit (See page AC-37).
(b) Disconnect the connector.
(c) Remove the 3 screws and the servomotor.
5. INSPECT AIR MIX DAMPER POSITION SENSOR CIR-
CUIT (See page DI-787)
6. INSPECT AIR MIX CONTROL SERVOMOTOR CIRCUIT
(See page DI-799)
7. Driver side:
INSTALL AIR MIX SERVOMOTOR
(a) Install the servomotor with the 3 screws.
(b) Connect the connector.
(c) Install the lower LH panel insert.
(d) Install the lower No. 1 panel.
8. Passenger side:
INSTALL AIR MIX SERVOMOTOR
(a) Install the servomotor with the 3 screws.
(b) Connect the connector.
(c) Install the blower unit (See page AC-37).
Page 33 of 1897
AC2GC-01
I12303
AC-60
- AIR CONDITIONINGAIR OUTLET SERVOMOTOR
1982 Author: Date:
2001 AVALON (RM808U)
AIR OUTLET SERVOMOTOR
INSPECTION
1. REMOVE AIR OUTLET SERVOMOTOR
(a) Remove the instrument panel (See page BO-90).
(b) Disconnect the connector.
(c) Remove the 3 screws and servomotor.
2. INSPECT AIR OUTLET DAMPER POSITION SENSOR
CIRCUIT (See page DI-793)
3. INSPECT AIR OUTLET DAMPER CONTROL SERVO-
MOTOR CIRCUIT (See page DI-808)
4. INSTALL AIR OUTLET SERVOMOTOR
(a) Install the 3 screws with the 3 screws.
(b) Connect the connector.
(c) Install the instrument panel (See page BO-97).
Page 35 of 1897
I12306
AC2GF-01
- AIR CONDITIONINGAMBIENT TEMPERATURE SENSOR
AC-63
1985 Author: Date:
2001 AVALON (RM808U)
AMBIENT TEMPERATURE
SENSOR
INSPECTION
1. REMOVE AMBIENT TEMPERATURE SENSOR
(a) Disconnect the connector.
(b) Remove the sensor.
2. INSPECT AMBIENT TEMPERATURE SENSOR CIR-
CUIT (See page DI-766)
3. INSTALL AMBIENT TEMPERATURE SENSOR
(a) Install the sensor.
(b) Connect the connector.
