2001 TOYOTA AVALON Service Repair Manual

AC0YG-03
P00763
Pivot Bolt
Adjusting Lock Bolt
AC-18
- AIR CONDITIONINGDRIVE BELT
1940 Author
: Date
:
2001 AVALON (RM808U)
REMOVAL
REMOVE DRIVE BELT
(a) Loosen the pivot bolt and adjusting lock nut.
(b) Loosen the drive belt tension by adjusting bolt and re-
move the drive belt.

AC2GG-01
I12917
AC0175
Thermometer
Ice
Ohmmeter
Sensor
10 cm
(3.94 in.)
Z04352
5,000
500
0
0 4,500
4,000
3,500
3,000
2,500
2,000
1,500
1,000
51015 2025
32 41 50 59 68 77 (W)
(°C)
(°F)
AC-64
- AIR CONDITIONINGEVAPORATOR TEMPERATURE SENSOR
1986 Author
: Date
:
2001 AVALON (RM808U)
EVAPORATOR TEMPERATURE
SENSOR
INSPECTION
1. REMOVE EVAPORATOR TEMPERATURE SENSOR
(a) Remove the blower unit (See page AC-37).
(b) Remove evaporator temperature sensor.
(1) Disconnect the connector.
(2) Pull out the sensor.
2. INSPECT EVAPORATOR TEMPERATURE SENSOR
Inspect evaporator temperature sensor resistance.
(1) Place the sensor in cold water, and while changing
the temperature of the water, measure resistance at
the connector and at the same time, measure tem-
perature of the water with a thermometer.
(2) Compare the 2 readings on the chart.
If resistance value is not as specified, replace the sensor.
3. INSTALL EVAPORATOR TEMPERATURE SENSOR
(a) Install the evaporator temperature sensor.
(1) Install the sensor.
(2) Connect the connector.
(b) Install the blower unit. (See page AC-41)

AC2GO-01
I12961I12955I12970
Instrument Panel Register
RadioBracket
Bucket seat type:
Flash Receptacle
Bench seat type:
Instrument Lower Cover
Heater Control Assembly Bracket
Heater Control Cover
Bulb
Air Conditioning Panel
Air Mix Damper Control Cable
(Color: Blue) Heater Control Housing Air Mix Damper Control Cable
(Color: Black)
Heater Control Name Sheet
Bulb
Knobs
- AIR CONDITIONINGHEATER CONTROL ASSEMBLY (Manual A/C)
AC-81
2003 Author
: Date
:
2001 AVALON (RM808U)
COMPONENTS

I12971
91 : Bulb
AC2GQ-01
I07872
I12972
11
10
I12973
11
10
1
- AIR CONDITIONINGHEATER CONTROL ASSEMBLY (Manual A/C)
AC-83
2005 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION
1. INSPECT ILLUMINATION OPERATION
Connect the positive (+) lead from the battery to terminal 1 and
negative (-) lead to terminal 9 then check that the illuminations
lights up.
If operation is not as specified, check the faulty bulb.
2. INSPECT BULB
Apply the tester as shown in the illustration to the test for conti-
nuity.
If continuity exists, replace the heater control.
If no continuity exists, replace the bulb.
3. INSPECT A/C INDICATOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
10 and the negative (-) lead to terminal 11.
(b) Push the A/C button in and then check that the indicator
lights up.
If operation is not as specified, replace the switch.
4. INSPECT DIMMING OPERATION
(a) Connect the positive (+) lead from the battery to terminal
10 and the negative (-) lead to terminal 11 while press the
switch.
(b) Connect the positive (+) lead from the battery to terminal
1 and then check that the indicator dims.
If operation is not as specified, replace the switch.

I12974
I12975
10 8
I12976
10 8
1
I12977
I12978
10 7 AC-84
- AIR CONDITIONINGHEATER CONTROL ASSEMBLY (Manual A/C)
2006 Author
: Date
:
2001 AVALON (RM808U)
5. INSPECT A/C SWITCH CONTINUITY
Condition / CircuitTester connectionSpecified condition
OFF5 - 6No continuity
ON5 - 6Continuity
If operation is not as specified, replace the switch circuit board.
6. INSPECT RECIRC INDICATOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
10 and the negative (-) lead to terminal 8.
(b) Push the REC button in and then check that the indicator
lights up.
If operation is not as specified, replace the switch circuit board.
7. INSPECT DIMMING OPERATION
(a) Connect the positive (+) lead from the battery to terminal
10 and the negative (-) lead to terminal 8 while press the
switch.
(b) Connect the positive (+) lead from the battery to terminal
4 and then check that the indicator dims.
If operation is not as specified, replace the switch circuit board.
8. INSPECT RECIRC SWITCH CONTINUITY
Condition / CircuitTester connectionSpecified condition
OFF18 - 8No continuity
ON18 - 8Continuity
If operation is not as specified, replace the switch circuit board.
9. INSPECT FRESH INDICATOR OPERATION
(a) Connect the positive (+) lead from the battery to terminal
10 and the negative (-) lead to terminal 8.
(b) Push the FRS button in and then check that the indicator
lights up.
If operation is not as specified, replace the switch circuit board.

I12979
10 8
1
I12977
I12980
10 8
4
I12981
10 8
41
I12982
- AIR CONDITIONINGHEATER CONTROL ASSEMBLY (Manual A/C)
AC-85
2007 Author
: Date
:
2001 AVALON (RM808U)
10. INSPECT DIMMING OPERATION
(a) Connect the positive (+) lead from the battery to terminal
10 and the negative (-) lead to terminal 8 while press the
switch.
(b) Connect the positive (+) lead from the battery to terminal
1 and then check that the indicator dims.
If operation is not as specified, replace the switch circuit board.
11. INSPECT FRESH SWITCH CONTINUITY
Condition / CircuitTester connectionSpecified condition
OFF17 - 8No continuity
ON17 - 8Continuity
If operation is not as specified, replace the switch circuit board.
12. INSPECT REAR DEFOGGER INDICATOR OPERA-
TION
(a) Connect the positive (+) lead from the battery to terminal
10, 4 and negative (-) lead to terminal 8.
(b) Push the RDEF button in and then check that the indicator
lights up.
If operation is not as specified, replace the switch circuit board.
13. INSPECT DIMMING OPERATION
(a) Connect the positive (+) lead from the battery to terminal
10, 4 and negative (-) lead to terminal 8 while press the
switch.
(b) Connect the positive (+) lead from the battery to terminal
1 and then check that the indicator dims.
If operation is not as specified, replace the switch circuit board.
14. INSPECT REAR DEFOGGER SWITCH CONTINUITY
Condition / CircuitTester connectionSpecified condition
OFF4 - 8No continuity
ON4 - 8Continuity
If operation is not as specified, replace the switch circuit board.

I12937
LO
M1
M2
HI
I12983
AC-86
- AIR CONDITIONINGHEATER CONTROL ASSEMBLY (Manual A/C)
2008 Author
: Date
:
2001 AVALON (RM808U)
15. INSPECT BLOWER SPEED CONTROL SWITCH CON-
TINUITY
Condition / CircuitTester connectionSpecified condition
OFF-No continuity
LO1 - 8Continuity
M11 - 6 - 8Continuity
M21 - 5 - 8Continuity
HI1 - 4 - 8Continuity
If operation is not as specified, replace the switch.
16. INSPECT MODE CONTROL SWITCH CONTINUITY
Condition / CircuitTester connectionSpecified condition
FACE12 - 8Continuity
B/L13 - 8Continuity
FOOT14 - 8Continuity
FOOT/DEF.15 - 8Continuity
DEF.16 - 8Continuity
If operation is not as specified, replace the switch.

AC2GR-01
I12923
I12922
I12924
Air Mix Control Cable
Air Mix Control
Cable
- AIR CONDITIONINGHEATER CONTROL ASSEMBLY (Manual A/C)
AC-87
2009 Author
: Date
:
2001 AVALON (RM808U)
INSTALLATION
1. INSTALL HEATER CONTROL ASSEMBLY
(a) Install the heater control assembly and stereo opening
cover assembly to 2 brackets.
(b) Install the 8 bolts and 4 screws.
(c) Connect the connectors.
(d) Install the heater control assembly with the 4 bolts.
(e) Pass the through the air mix control cable (Driver side) as
shown the illustration.
Driver side cable should be set between driver side brace
and A/C unit.
(f) Pass the throught the air mix control cable (Passenger
side) as shown the illustration.
Passenger side cable should be set outerside passenger
side side brace.
2. CONNECT HEATER CONTROL CABLES
(a) Set the air mix control knobs to ºMAX. COOLº position.