Page 89 of 1897
AC2GE-01
I12305
AC-62
- AIR CONDITIONINGROOM TEMPERATURE SENSOR
1984 Author: Date:
2001 AVALON (RM808U)
ROOM TEMPERATURE SENSOR
INSPECTION
1. REMOVE ROOM TEMPERATURE SENSOR
(a) Remove the lower No. 1 panel (See page BO-90).
(b) Disconnect the connector.
(c) Remove the sensor from the aspirator hose.
2. INSPECT ROOM TEMPERATURE SENSOR CIRCUIT
(See page DI-763)
3. INSTALL ROOM TEMPERATURE SENSOR
(a) Install the sensor to the aspirator hose.
(b) Connect the connector.
(c) Install the lower No. 1 panel (See page BO-97).
Page 90 of 1897
I12304
AC2GD-01
- AIR CONDITIONINGSOLAR SENSOR
AC-61
1983 Author: Date:
2001 AVALON (RM808U)
SOLAR SENSOR
INSPECTION
1. REMOVE SOLAR SENSOR
Using a screwdriver, pull out the sensor, then disconnect
the connector.
HINT:
Tape the screwdriver tip before use.
2. INSPECT SOLAR SENSOR CIRCUIT
(See page DI-784, DI-775)
3. INSTALL SOLAR SENSOR
Install the solar sensor, then connect the connector.
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 92 of 1897
AC-16
- AIR CONDITIONINGTROUBLESHOOTING (Manual A/C)
1938 Author: Date:
2001 AVALON (RM808U) Blinking of A/C indicator
1. Compressor
2. Drive belt
3. Compressor lock sensor
4. A/C amplifierAC-42
AC-17
AC-42
AC-77
Brightness does not change when light control switch is turned1. Headlight and taillight system
2. Heater control assemblyBE-19
AC-80
Page 175 of 1897
6RadioPOOR RECEPTION
Is the condition bad in comparison with other vehicles?
Are there any additional installation parts?
(Sun shade film, telephone antenna, etc.)
Check if there is any scratch and breaking of a wire on
the glass antenna and the defogger pattern.
(visual check. tester)
(See page BE-126)
Is the contact of the plug jack of the radio OK?
Does the condition get better by using the outer
antenna (such as pillar antenna)?
Is the contact of the antenna terminal on the glass
surface and the defogger terminal?
Is the continuity of the antenna cord OK?
Check the grounding of the antenna, antenna cord,
choke coil, and noise filter. (See page BE-126)
Does the condition get better by replacing
the choke coil?
Does the condition get better by replacing the
antenna cord?Take a measure for contact. An electric wave environment is bad.
Does the condition get better if
removing them?
Influence of additional installation parts.
Repair. (See Pub. No. RM588E on
page BE-125)
Check the radio.
Take a measure for contact.
Grounding failure. Replace the antenna cord.
Replace the choke coil.
Replace the antenna cord. Ye s
No
Exchange the glass.Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s No
No
No
NoNo
No
No
No
NG
OK
Ye s BE-146
- BODY ELECTRICALAUDIO SYSTEM
1750 Author: Date:
2001 AVALON (RM808U)
Page 600 of 1897
DI-238- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
394 Author: Date:
2001 AVALON (RM808U)
DTC Always ON ABS ECU Malfunction
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
Always ON
Either of the following 1., 2. or 3. is detected:
1. The ECU connectors are OFF the ECU.
2. There is a malfunction in the ECU internal circuit.
3. There is a malfunction in ABS warning light circuit.
Charging system
ABS warning light circuit
INSPECTION PROCEDURE
1 Check that the ECU connectors are securely connected to the ECU.
NO Connect the connector to the ECU.
YES
2 Is DTC output?
Check DTC on page DI-212.
YES Repair circuit indicated by the output code.
NO
3 Does ABS warning light go off?
YES Check for open or short circuit in harness and
connector between ECU-IG fuse and ECU (See
page IN-30).
NO
DI6NK-01
Page 607 of 1897
F00064
LOCK
18
17
16(+) (-) LOCK
(+) (-)
A7 LOCK
19(+) (-)
DI-220- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
376 Author: Date:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check voltage between terminals +B (A7 - 17, 18) and GND (A7 - 16, 19) of ABS
actuator connector.
PREPARATION:
Disconnect the connector from the ABS actuator.
CHECK:
Measure the voltage between terminals A7 - 17, 18 and A7 -
16, 19 of ABS actuator harness side connector.
OK:
Voltage: 10 - 14 V
NG Check and replace fuses.
Check and repair harness or connector.
OK
If the same code is still output after the DTC is deleted, check the contact condition of each con-
nection. If the connections are normal, the ECU may be defective.
Page 609 of 1897
F00064
LOCK
16(+)(-) LOCK
(+)(-)LOCK
19 1817
(+)(-) A7
DI-222- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
378 Author: Date:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check voltage between terminals +B (A7 - 17, 18) and GND (A7 - 16, 19) of brake
actuator connector.
PREPARATION:
Disconnect the connector from the brake actuator.
CHECK:
Measure the voltage between terminals A7 - 17, 18 and A7 -
16, 19 of brake actuator harness side connector.
OK:
Voltage: 10 - 14 V
NG Check and replace fuses.
Check and repair harness or connector.
OK
If the same code is still output after the DTC is deleted, check the contact condition of each con-
nection. If the connections are normal, the ECU may be defective.
