2001 TOYOTA AVALON wheel

R02981
- BRAKEFRONT BRAKE PAD
BR-27
1426 Author
: Date
:
2001 AVALON (RM808U)
10. INSTALL CALIPER
(a) Draw out a small amount of brake fluid from the reservoir.
(b) Press in the piston with a hammer handle or similar imple-
ment.
HINT:
If the piston is difficult to push in, loosen the bleeder plug and
push in the piston while letting some brake fluid escape.
(c) Install the caliper.
(d) Hold the sliding pin and torque the installation bolt.
Torque: 34 N´m (350 kgf´cm, 25 ft´lbf)
(e) Install the flexible hose and bolt to the shock absorber
bracket.
Torque: 29 N´m (300 kgf´cm, 21 ft´lbf)
11. INSTALL FRONT WHEEL
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
12. DEPRESS BRAKE PEDAL SEVERAL TIMES
13. CHECK THAT FLUID LEVEL IS AT MAX LINE

BR0LH-03
W04053
R00309
BR3948
R00310
BR-44
- BRAKEPARKING BRAKE
1443 Author
: Date
:
2001 AVALON (RM808U)
DISASSEMBLY
1. REMOVE REAR WHEEL
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
2. REMOVE REAR DISC BRAKE ASSEMBLY
(a) Remove the 2 mounting bolts and remove the disc brake
assembly.
Torque: 47 N´m (475 kgf´cm, 34 ft´lbf)
(b) Suspend the disc brake securely. Ensure that the hose is
not stretched.
3. REMOVE DISC
Release the parking brake pedal, and remove the disc.
HINT:
If the disc cannot be removed easily, turn the shoe adjuster until
the wheel turns freely.
4. REMOVE SHOE RETURN SPRINGS
Using needle-nose pliers, remove the 2 shoe return springs.
5. REMOVE FRONT SHOE, ADJUSTER AND TENSION
SPRING
(a) Disconnect the tension spring from the front shoe.
(b) Slide out the front shoe and remove the shoe adjuster.
(c) Remove the shoe strut with the spring.
(d) Remove the shoe hold-down spring, 2 caps and pin.
6. REMOVE REAR SHOE
(a) Slide out the rear shoe and remove the tension spring.
(b) Remove the shoe hold-down spring, 2 caps and pin.
(c) Using needle-nose pliers, disconnect the parking brake
cable from the parking brake shoe lever.

BR0LB-02
F09725
BR-38
- BRAKEREAR BRAKE CALIPER
1437 Author
: Date
:
2001 AVALON (RM808U)
REMOVAL
1. REMOVE REAR WHEEL
Remove the wheel and temporarily fasten the disc with hub
nuts.
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
2. DISCONNECT FLEXIBLE HOSE
(a) Remove the union bolt and 2 gaskets from the caliper,
then disconnect the flexible hose from the caliper.
Torque: 29 N´m (300 kgf´cm, 22 ft´lbf)
HINT:
At the time of installation, insert the flexible hose lock securely
in the lock hole in the caliper.
(b) Use a container to catch the brake fluid as it drains out.
3. REMOVE CALIPER
(a) Remove the 2 installation bolts.
Torque: 34 N´m (350 kgf´cm, 25 ft´lbf)
NOTICE:
At the time of installation, insert the sliding pin with sliding
bushing into the bottom side.
(b) Remove the caliper from the torque plate.
4. REMOVE 2 BRAKE PADS WITH ANTI- SQUEAL
SHIMS
5. REMOVE 4 PAD SUPPORT PLATES
NOTICE:
There should be no oil or grease adhering to the friction
surfaces of the pads or disc.

BR0L9-03
F09722
F09723
R10387
- BRAKEREAR BRAKE PAD
BR-35
1434 Author
: Date
:
2001 AVALON (RM808U)
REPLACEMENT
1. REMOVE REAR WHEEL
2. INSPECT PAD LINING THICKNESS
Check the pad's thickness through the caliper inspection hole
and replace pads if not within specification.
Minimum thickness: 1.0 mm (0.039 in.)
3. LIFT UP CALIPER
(a) Remove the bottom side installation bolt.
(b) Lift up and suspend it securely.
HINT:
Do not disconnect the flexible hose from the caliper.
4. REMOVE 2 BRAKE PADS WITH 4 ANTI- SQUEAL
SHIMS
5. REMOVE 4 PAD SUPPORT PLATES
NOTICE:
The support plates can be used again provided that they
have sufficient rebound, no deformation, cracks or wear,
and have had all rust, dirt and foreign particles cleaned off.
6. CHECK DISC THICKNESS AND RUNOUT
(See page BR-40)
7. INSTALL PAD SUPPORT PLATES
Install the 4 pad support plates.
8. INSTALL NEW PADS
NOTICE:
When replacing worn pads, the anti-squeal shims must be
replaced together with the pads.
(a) Apply disc brake grease to both side of the inner
anti-squeal shims (See page BR-37).
(b) Install the 2 anti-squeal shims on each pad.
(c) Install 2 pads with the pad wear indicator plates facing
downward.
NOTICE:
There should be no oil or grease adhering to the friction
surfaces of the pads or the disc.
9. INSTALL CALIPER
(a) Draw out a small amount of brake fluid from the reservoir.
(b) Press in the piston with a hammer handle or similar imple-
ment.
HINT:
If the piston is difficult to push in, loosen the bleeder plug and
push in the piston while letting some brake fluid escape.

F09723
BR-36
- BRAKEREAR BRAKE PAD
1435 Author
: Date
:
2001 AVALON (RM808U)
(c) Install the caliper.
(d) Install the installation bolt.
Torque: 34 N´m (350 kgf´cm, 25 ft´lbf)
10. INSTALL REAR WHEEL
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
11. DEPRESS BRAKE PEDAL SEVERAL TIMES
12. CHECK THAT FLUID LEVEL IS AT MAX LINE

F09803
ABS Actuator and ECU
+B
BAT
GND1
GND2 W-B
FL MAINFL Block
ALT
B-L
BatteryA717
A718
A719
A716 L
L
W-B
EE5 5
12 B
10 2F
42F 12H
12G
W-B
ED 1
F8 1
F6
BABS Engine Room R/B No. 5
Engine Room J/B
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)DI-223
379 Author
: Date
:
2001 AVALON (RM808U)
DTC 21 - 24 ABS Solenoid Circuit
CIRCUIT DESCRIPTION
This solenoid goes on when signals are received from the ECU, and controls the pressure acting on the
wheel cylinders thus controlling the braking force.
DTC No.DTC Detecting ConditionTrouble Area
21, 22, 23, 24Solenoid signal does not match the check result.
Brake actuator

Each solenoid circuit
WIRING DIAGRAM
DI6NE-01

BR3583
BR3582F00010
RotorSpeed Sensor
Magnet
To ECU
+V
-VHigh Speed
Low Speed
CoilNS
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)DI-225
381 Author
: Date
:
2001 AVALON (RM808U)
DTC 31 - 36, 38, 39 Speed Sensor Circuit
CIRCUIT DESCRIPTION
The speed sensor detects wheel speed and sends the ap-
propriate signals to the ECU. These signals are used to control
the ABS system. Each of the front and rear rotors has 48 serra-
tions.
When the rotors rotate, a magnetic field emitted by a permanent
magnet in the speed sensor generates an AC voltage. Since
the frequency of this AC voltage changes in direct proportion to
the speed of the rotor, the frequency is used by the ECU to de-
tect the speed of each wheel.

DTC No.DTC Detecting ConditionTrouble Area
31, 32, 33, 34
When any of the following 1. through 3. is detected:
1. Vehicle speed is more than 40 km/h (25 mph), and
pulses are not input for 0.01 sec.
2. After the initial start or restart and when the vehicle
speed has reached 12 km/h (7 mph), the wheel speed of
0 km/h (0 mph) is detected.
3. After the initial start or restart and when the vehicle
speed has reached 18 km/h (11 mph), the front wheel
speed of 0 km/h (0 mph) is detected.

Right front, left front, right rear, left rear speed sensor

Each speed sensor circuit

Sensor installation
35, 36, 38, 39Detecting abnormality in the resistance value of each speed
sensor.
Right front, left front, right rear, left rear speed sensor

Each speed sensor circuit
HINT:

DTC No. 31 and 35 are for the right front speed sensor.

DTC No. 32 and 36 are for the left front speed sensor.

DTC No. 33 and 38 are for the right rear speed sensor.

DTC No. 34 and 39 are for the left rear speed sensor.
DI6NF-02

DI-230- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
386 Author
: Date
:
2001 AVALON (RM808U)
DTC 37 Speed Sensor Rotor Faulty
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
37
When any of the following 1. through 3. is detected:
1. Occurrence of wheel speed difference between the front
and rear wheels of either left or right side of the vehicle
and the front left and right wheels. (Detection of mini tire
size, spinning wheel or decelerating wheel.)
2. Continuous ABS control for 60 sec. or more.
3. Interference on 1 or more wheels for 20 sec. with the
brake pedal depressed, or for 5 sec. when the brake
pedal is not depressed.

Speed sensor

Sensor rotor
INSPECTION PROCEDURE
1 Check sensor rotor (See page DI-225).
NG Replace sensor rotor.
OK
2 Check speed sensor (See page DI-225).
NG Replace speed sensor.
OK
3 Check for open or short circuit in harness and connector between speed sensor
and ABS ECU (See page IN-30).
NG Repair or replace harness and connector.
OK
Check and replace ABS ECU.
DI6NG-01