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 51 of 1897
AC2G4-01
I12297
12
I12298
3 AC-42
- AIR CONDITIONINGCOMPRESSOR AND MAGNETIC CLUTCH
1964 Author: Date:
2001 AVALON (RM808U)
COMPRESSOR AND MAGNETIC
CLUTCH
ON-VEHICLE INSPECTION
1. INSPECT COMPRESSOR FOR METALLIC SOUND
Check there is abnormal metallic sound from the compressor
when the A/C switch is ON.
If abnormal metallic sound is heard, replace the compressor as-
sembly.
2. INSPECT REFRIGERANT PRESSURE
(See page AC-3)
3. INSPECT VISUALLY FOR LEAKAGE OF REFRIGER-
ANT
Using a gas leak detector, check for leakage of refrigerant.
If there is any leakage, replace the compressor assembly.
4. INSPECT COMPRESSOR LOCK SENSOR RESIS-
TANCE
(a) Disconnect the connector.
(b) Measure resistance between terminals 1 and 2.
Standard resistance: 65 - 125 W at 20 °C (68 °F)
If resistance is not as specified, replace the sensor.
5. CHECK FOR LEAKAGE OF GREASE FROM CLUTCH
BEARING
6. CHECK FOR SIGNS OF OIL ON PRESSURE PLATE OR
ROTOR
7. INSPECT MAGNETIC CLUTCH BEARING FOR NOISE
(a) Start engine.
(b) Check for abnormal noise from the compressor when the
A/C switch is OFF.
If abnormal noise is being emitted, replace the magnetic clutch.
8. INSPECT MAGNETIC CLUTCH OPERATION
(a) Disconnect the connector.
(b) Connect the positive (+) lead from the battery to terminal
4 and the negative (-) lead to the body ground.
(c) Check that the magnetic clutch energized.
If operation is not as specified, replace the magnetic clutch.
Page 91 of 1897
AC2FV-01
- AIR CONDITIONINGTROUBLESHOOTING (Manual A/C)
AC-15
1937 Author: Date:
2001 AVALON (RM808U)
TROUBLESHOOTING (Manual A/C)
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
No blower operation
2. HTR Fuse
3. Heater main relay
4. Blower motor
5. Blower resistor
6. Blower speed control switch
7. Wire harness-
AC-68
AC-56
AC-57
AC-83
-
No blower control
1. Blower motor
2. Blower resistor
3. Blower speed control switch
4. Wire harnessAC-56
AC-57
AC-83
-
No air temperature control1. Engine coolant volume
2. Heater control assembly-
AC-80
No compressor operation
1. Refrigerant volume
2. A.C Fuse
3. Magnetic clutch
4. Compressor lock sensor
5. Compressor
6. Pressure switch
7. Heater main relay
8. Blower speed control switch
9. A/C switch
10.A/C amplifier
11. Evaporator temp. sensor
12.Wire harnessAC-3
-
AC-42
AC-42
AC-42
AC-65
AC-68
AC-83
AC-83
AC-77
AC-64
-
No cool air comes out
1. Refrigerant volume
2. Refrigerant pressure
3. Drive belt
4. Magnetic clutch
5. Compressor lock sensor
6. Pressure switch
7. Evaporator temp. sensor
8. A/C switch
9. A/C amplifier
10.Heater control assembly
11. Wire harnessAC-3
AC-3
AC-17
AC-42
AC-42
AC-65
AC-64
AC-83
AC-77
AC-80
-
No engine idle-up when A/C switch ON
1. A/C amplifier
2. Idle control system
3. Wire harnessAC-77
DI-102
-
No air inlet control
1. Air inlet servomotor
2. Heater control assembly
3. Wire harnessAC-39
AC-80
-
No mode control
1. Air outlet servomotor
2. Heater control assembly
3. Wire harnessAC-60
AC-80
-
Page 99 of 1897
D07235
Q00075
Q10028
Q06478
Q10286
AX-36
- AUTOMATIC TRANSAXLEAUTOMATIC TRANSAXLE UNIT
1326 Author: Date:
2001 AVALON (RM808U)
7. DISCONNECT GROUND CABLE
8. SEPARATE WIRE HARNESS FROM AUTOMATIC
TRANSAXLE
Remove the bolt and separate the wire harness.
9. DISCONNECT DIRECT CLUTCH SPEED SENSOR
CONNECTOR
10. DISCONNECT PARK/NEUTRAL POSITION SWITCH
CONNECTOR
11. DISCONNECT SOLENOID CONNECTOR
12. DISCONNECT SHIFT CONTROL CABLE
(a) Remove the nut and disconnect the shift control cable
from the control shaft lever.
Torque: 15 N´m (150 kgf´cm, 11 ft´lbf)
(b) Remove the clip and disconnect the shift control cable
from the bracket.
13. REMOVE 2 ENGINE MOUNTING ABSORBER BOLTS
Torque: 48 N´m (490 kgf´cm, 35 ft´lbf)
14. REMOVE 2 FRONT SIDE ENGINE MOUNTING BOLTS
Torque: 44 N´m (440 kgf´cm, 32 ft´lbf)
15. REMOVE STARTER AND SHIFT CONTROL CABLE
CLAMP
(a) Disconnect the connector.
(b) Remove the nut and disconnect the terminal.
(c) Remove the 2 bolts, starter and shift control cable clamp.
Torque: 39 N´m (400 kgf´cm, 29 ft´lbf)
Page 197 of 1897
C
No.Wire Connector Side
1
2
3
4
6
7
8
9
10
11
12
13
14
15
16ECU-IG No. 2 Fuse
Injector *
1
F (Panel) Fuse
Outside temperature sensor
ECM *
1
ABS ECU
Fuel sender gauge
Fuel sender gauge
Light control volume
RAD No. 1 Fuse Ground
ECU-ACC Fuse
-
Engine coolant temperature sendoer gauge
EFI
Heater control ECU *
117
18
19
20
21Speed control unit
Fuel sender gauge
-
Sender ground
Ground 22Starter Relay
D1
2
3
4
6
7
8
9
10
11
12
13
14
15
16-
Combination meter
-
-
-
- 17
18 -Low oil pressure warning switch *
2
Compressor lock sensor *2
A/C magnet switch
Evaporator temperature sensor *
2
A/C switch *2
A/C indicator *2
-
*1: Hi GradeECM
*2: Lo Grade 5
5Combination meter
Combination meter
Combination meter
Combination meter
Combination meter Combination meter
Combination meter
Combination meter
Combination meter
Combination meter
Combination meter
E
No.Wire Connector Side
1
2
3
4
6
7
8
9
10
11
12
13
14
15
16
17
18
19
205 1
2Compass sensor *1
Compass sensor *1
Compass sensor *1
-
-
-
-
-
-
-
-
-
- Compass sensor *
1
7
Compass sensor *1
- BODY ELECTRICALCOMBINATION METER
BE-47
1651 Author: Date:
2001 AVALON (RM808U)
Page 206 of 1897
N02332
1
2 3
I13320
A
DC
B BE-56
- BODY ELECTRICALCOMBINATION METER
1660 Author: Date:
2001 AVALON (RM808U)
5. INSPECT VEHICLE SPEED SENSOR OPERATION
(a) Connect the positive (+) lead from battery to terminal 1
and negative (-) lead to terminal 2.
(b) Connect the positive (+) lead from tester to terminal 3 and
the negative (-) lead to terminal 2.
(c) Rotate the shaft.
(d) Check that there is voltage change from approx. 0 V to 11
V or more between terminals 2 and 3.
HINT:
The voltage change should be 4 times for every revolution of
the speed sensor shaft.
If operation is not as specified, replace the sensor.
6. INSPECT SPEEDOMETER RESISTANCE
Measure the resistance between terminals with fixing pointer to
the stopper.
Tester connectionResistance (W)
A - B250
C - D250
If resistance value is not as the specified, replace the meter.
7. INSPECT TACHOMETER/ON-VEHICLE
(a) Connect a tune-up test tachometer, and start the engine.
NOTICE:
Reversing the connection of the tachometer will dam-
age the transistors and diodes inside.
When removing or installing the tachometer, be care-
ful not to drop or subject it to heavy shocks.
(b) Compare the tester and tachometer indications.
DC 13.5 V 25 °C at (77°F)
Standard indicationAllowable range
700630 - 770
1,000900 - 1,100
2,0001,850 - 2,150
3,0002,800 - 3,200
4,0003,800 - 4,200
5,0004,800 - 5,200
6,0005,750 - 6,250
7,0006,700 - 7,300
Page 210 of 1897
N02346
ON OFF
1 2
Z11183
1
Z15790
Warning Light
Ignition
Switch
BatteryWire Harness Side
123 45
6789101112
BE-60
- BODY ELECTRICALCOMBINATION METER
1664 Author: Date:
2001 AVALON (RM808U)
19. INSPECT BRAKE FLUID LEVEL WARNING SWITCH
OPERATION
(a) Remove the reservoir tank cap and strainer.
(b) Disconnect the connector.
(c) Check that no continuity exists between the terminals with
the switch OFF (float up).
(d) Use a siphon, etc. to take fluid out of the reservoir tank.
(e) Check that continuity exists between the terminals with
the switch ON (float down).
(f) Pour the fluid back in the reservoir tank.
If operation is not as specified, replace the switch.
20. INSPECT PARKING BRAKE WARNING SWITCH CON-
TINUITY
(a) Check that continuity exists between terminal and switch
body with the switch ON (switch pin released).
(b) Check that no continuity exists between terminal and
switch body with the switch OFF (switch pin pushed in).
If operation is not as specified, replace the switch or inspect
ground point.
21. INSPECT REAR LIGHTS WARNING LIGHT
(a) Disconnect the connector from the light failure sensor and
ground terminal 4 on the wire harness side connector.
(b) Start the engine, check that the warning light lights up.
If the warning light does not light up, test the bulb or inspect wire
harness.
Page 215 of 1897
I12532
Door Courtesy Switch
Fuel Sender Gauge
Light Failure Sensor Seat Belt Buckle Switch
Engine Coolant Temperature Sender Gauge
Park/Neutral Position Switch Low Oil Pressure Warning Switch
Occupant Detection Sensor
BE-42
- BODY ELECTRICALCOMBINATION METER
1646 Author: Date:
2001 AVALON (RM808U)
