2001 TOYOTA AVALON brakes

BO2QJ-01
BO0632
BO0633
15°
45° BO-126
- BODYSEAT BELT
1911 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION
CAUTION:
Replace the seat belt assembly (outer belt, inner belt, bolts,
nuts or sill-bar) if it has been used in a severe impact. The
entire assembly should be replaced even if damage is not
obvious.
1. RUNNING TEST (IN SAFE AREA)
(a) Fasten the front seat belts.
(b) Drive the car at 10 mph (16 km/h) and slam on the brakes.
Check that the belt locks and cannot be extended at this
time.
HINT:
Conduct this test in a safe area. If the belt does not lock, remove
the belt mechanism assembly and conduct the following static
check. Also, whenever installing a new belt assembly, verify the
proper operation before installation.
2. Driver 's seat belt (ELR):
STATIC TEST
(a) Make sure that the belt locks when pulled out quickly.
(b) Remove the locking retractor assembly.
(c) Tilt the retractor slowly.
(d) Make sure that the belt can be pulled out at a tilt of 15 de-
grees or less, and cannot be pulled out over 45 degrees
of tilt.
If a problem is found, replace the assembly.
3. Except driver's seat belt (ALR/ELR):
STATIC TEST
(a) Make sure that the belt locks when pulled out quickly.
(b) Remove the locking retractor assembly.
(c) Pull out the whole belt and measure the length of the
whole belt.
Then retract the belt slightly and pull it out again
(d) Make sure that the belt cannot be extended further.
If a problem is found, replace the assembly.

DI-192
- DIAGNOSTICSAUTOMATIC TRANSAXLE
348 Author
: Date
:
2001 AVALON (RM808U)
DTC P1520 Stop Light Switch Signal Malfunction
CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling, while driving in lock-up condition, when
brakes are suddenly applied.
When the brake pedal is operated, this switch sends a signal to ECM. Then the ECM cancels operation of
the lock-up clutch while braking is in progress.
DTC No.DTC Detecting ConditionTrouble Area
P1520No stop light switch signal to ECM during driving.
(2-trip detection logic)
Open or short in stop light switch circuit

Stop light switch

ECM
WIRING DIAGRAM
See page DI-134.
INSPECTION PROCEDURE
See page DI-134.
DI02O-06

A11416
Fusible
Link
Block
FL
Main
BatteryStop Light
Switch
ALT
B
F10
F6STOP
R
211D 1B
1E
45
Light
Failure
Sensor 7
2
To Stop LightE8 15ECM
STP
E1 Driver Side J/B
3 11
W
1 1
16
4C 3C
3164F3F 3
5IK1 1D 1
1GG-W
G-WDriver Side J/B
J/B No.3
J/B No.4
G-W
G-W G-W G-W
DI-134
- DIAGNOSTICSENGINE
290 Author
: Date
:
2001 AVALON (RM808U)
DTC P1520 Stop Light Switch Signal Malfunction
CIRCUIT DESCRIPTION
This signal is used to detect when the brakes have been applied. The STP signal voltage is the same as
the voltage supplied to the stop lights.
The STP signal is used mainly to control the fuel cut-off engine speed (The fuel cut-off engine speed is re-
duced slightly when the vehicle is braking.).
DTC No.DTC Detecting ConditionTrouble Area
P1520
Stop light switch does not turn off when repeating driving at 30
km or more 10 time or more after depressing brake (2 trip
detection logic)
Short in stop light switch signal circuit

Stop light switch

ECM
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using TOYOTA hand-held tester or OBD II scan tool. Because freeze frame records
the engine conditions when the malfunction is detected. When troubleshooting, it is useful for determining
whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean
or rich, etc. at the time of the malfunction.
1 Check operation of stop light.
CHECK:
Check if the stop lights go on and off normally when the brake pedal is operated and released.
NG Check and repair stop light circuit.
DI088-09

MA0676B00995
MA01P-02
B08916
B09029
MA-8
- MAINTENANCEBODY
50 Author
: Date
:
2001 AVALON (RM808U)
BODY
INSPECTION
1. TIGHTEN BOLTS AND NUTS ON CHASSIS AND BODY
Tighten the following parts:

Front seat mount bolts
Torque: 37 N´m (375 kgf´cm, 27 ft´lbf)

Front suspension member-to-body mounting bolts
Torque: 181 N´m (1,850 kgf´cm, 134 ft´lbf)

Rear suspension member-to-body mounting nuts
Torque: 51 N´m (520 kgf´cm, 38 ft´lbf)
2. FINAL INSPECTION
(a) Check the operation of the body parts:

Hood:
Auxiliary catch operates properly
Hood locks securely when closed

Front and rear doors:
Door lock operates properly
Doors close properly

Luggage compartment door:
Door lock operates properly

Seats:
Seat adjusts easily and locks securely in any posi-
tion
Front seat back locks securely in any position
Folding-down rear seat backs lock securely
(b) Road test:

Check the engine and chassis for abnormal noises.

Check that the vehicle dose not wander or pull to
one side.

Check that the brakes work properly and do not
drag.

Do setting of the parking brake shoes and drum.
(c) Be sure to deliver a clean car and especially check:

Steering wheel

Shift lever knob

All switch knobs

Door handles

Seats

- MAINTENANCEINSIDE VEHICLE
MA-3
45 Author
: Date
:
2001 AVALON (RM808U)
13. ACCELERATOR PEDAL
Check the pedal for smooth operation and uneven pedal effort or catching.
14. BRAKE PEDAL (See page BR-6)
(a) Check the pedal for smooth operation.
(b) Check that the pedal has the proper reserve distance and free-play.
(c) Check the brake booster function.
15. BRAKES
At a safe place, check that the brakes do not pull to one side when applied.
16. PARKING BRAKE (See page BR-9)
(a) Check that the parking brake pedal has the proper travel.
(b) On a safe incline, check that the vehicle is held securely with only the parking brake applied.
17. AUTOMATIC TRANSMISSION ºPARKº MECHANISM
(a) Check the lock release mechanism of the selector lever for proper and smooth operation.
(b) On a safe incline, check that the vehicle is held securely with the selector lever in ºPº position and all
brakes released.

- MAINTENANCEINSIDE VEHICLE
MA-3
45 Author
: Date
:
2001 AVALON (RM808U)
13. ACCELERATOR PEDAL
Check the pedal for smooth operation and uneven pedal effort or catching.
14. BRAKE PEDAL (See page BR-6)
(a) Check the pedal for smooth operation.
(b) Check that the pedal has the proper reserve distance and free-play.
(c) Check the brake booster function.
15. BRAKES
At a safe place, check that the brakes do not pull to one side when applied.
16. PARKING BRAKE (See page BR-9)
(a) Check that the parking brake pedal has the proper travel.
(b) On a safe incline, check that the vehicle is held securely with only the parking brake applied.
17. AUTOMATIC TRANSMISSION ºPARKº MECHANISM
(a) Check the lock release mechanism of the selector lever for proper and smooth operation.
(b) On a safe incline, check that the vehicle is held securely with the selector lever in ºPº position and all
brakes released.

SA0VS-02
W03084
W03093
W03139
- SUSPENSION AND AXLEFRONT AXLE HUB
SA-9
1343 Author
: Date
:
2001 AVALON (RM808U)
REMOVAL
1. REMOVE FRONT WHEEL
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
2. CHECK BEARING BACKLASH AND AXLE HUB DEVI-
ATION
(a) Remove the 2 bolts, brake caliper and disc.
(b) Support the brake caliper securely.
(c) Using a dial indicator, check the backlash near the center
of the axle hub.
Maximum: 0.05 mm (0.0020 in.)
If the backlash exceeds the maximum, replace the bearing.
(d) Using a dial indicator, check the deviation at the surface
of the axle hub outside the hub bolt.
Maximum: 0.05 mm (0.0020 in.)
If the deviation exceeds the maximum, replace the axle hub.
(e) Install the disc, brake caliper and 2 bolts.
Torque: 107 N´m (1,090 kgf´cm, 79 ft´lbf)
3. REMOVE DRIVE SHAFT LOCK NUT
(a) Remove the cotter pin and lock cap.
(b) While applying the brakes, remove the nut.
Torque: 294 N´m (3,000 kgf´cm, 217 ft´lbf)
(c) Remove the 2 bolts, brake caliper and disc.
(d) Support the brake caliper securely.
4. DISCONNECT ABS SPEED SENSOR AND WIRE HAR-
NESS CLAMP
Remove the bolt and disconnect the ABS speed sensor and
wire harness clamp.
Torque: 8.0 N´m (82 kgf´cm, 71 in.´lbf)
5. LOOSEN 2 NUTS ON LOWER SIDE OF SHOCK AB-
SORBER
HINT:
Do not remove the bolts.
Torque: 211 N´m (2,150 kgf´cm, 156 ft´lbf)
HINT:
At the this time of installation, coat the nut's thread with engine
oil.

SA0VY-02
FA1535
SST
W03093
W03142
F07389
SA-16
- SUSPENSION AND AXLEFRONT DRIVE SHAFT
1350 Author
: Date
:
2001 AVALON (RM808U)
REMOVAL
NOTICE:

The hub bearing could be damaged if it is subjected
to the vehicle weight, such as when moving the ve-
hicle with the drive shaft removed.
Therefore, if it is absolutely necessary to place the ve-
hicle weight on the hub bearing, first support it with
SST.
SST 09608-16042 (09608-02021, 09608-02041)

After disconnecting the drive shaft from the axle hub,
work carefully so as not to damage the ABS speed
sensor rotor serration on the drive shaft.
1. REMOVE FRONT WHEEL
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
2. REMOVE FRONT FENDER APRON SEAL
3. DRAIN ATF
4. REMOVE DRIVE SHAFT LOCK NUT
(a) Remove the cotter pin and lock cap.
(b) While applying brakes, remove the nut.
Torque: 294 N´m (3,000 kgf´cm, 217 ft´lbf)
5. DISCONNECT TIE ROD END FROM STEERING
KNUCKLE (See page SA-9)
6. DISCONNECT LOWER SUSPENSION ARM FROM
LOWER BALL JOINT (See page SA-9)
7. DISCONNECT DRIVE SHAFT FROM AXLE HUB
Using a plastic hammer, disconnect the drive shaft from the axle
hub.
NOTICE:
Be careful not to damage the boot and ABS speed sensor
rotor.
8. LH drive shaft:
REMOVE DRIVE SHAFT
(a) Using a hub nut wrench and hammer handle or an equiva-
lent, remove the drive shaft.
NOTICE:
Be careful not to damage the dust cover and oil seal.