2001 TOYOTA AVALON steering wheel

SS0G9-03
SS-32
- SERVICE SPECIFICATIONSSTEERING
148 Author
: Date
:
2001 AVALON (RM808U)
STEERING
SERVICE DATA
DRIVE BELT
Drive belt tension* New belt120 - 185 lbf
Drive belt tension* Used belt95 - 135 lbf
POWER STEERING FLUID
Fluid level rise Maximum5 mm (0.20 in.)
Fluid pressure at idle speed with valve closed Minimum7,845 kPa (80 kgf/cm2, 1,138 psi)
STEERING WHEEL
Steering wheel freeplayMaximum30 mm (1.18 in.)
Steering effort at idle speedReference5.9 N´m (60 kgf´cm, 52 in.´lbf)
POWER STEERING VANE PUMP
Vane pump rotating torque0.3 N´m (2.8 kgf´cm, 2.4 in.´lbf) or less
Oil clearance between pump shaft and bushing STD0.03 - 0.05 mm (0.0012 - 0.0020 in.)
Oil clearance between pump shaft and bushingMaximum0.07 mm (0.0028 in.)
Vane plate heightMinimum8.6 mm (0.339 in.)
Vane plate thickness Minimum1.397 mm (0.0550 in.)
Vane plate lengthMinimum14.991 mm (0.5902 in.)
Clearance between the rotor groove and plateMaximum0.035 mm (0.0014 in.)
Vane plate length Pump rotor and cam ring mark
None14.999 - 15.001 mm (0.59051 - 0.59059 in.)
114.997 - 14.999 mm (0.59043 - 0.59051 in.)
214.995 - 14.997 mm (0.59035 - 0.59043 in.)
314.993 - 14.995 mm (0.59027 - 0.59035 in.)
414.991 - 14.993 mm (0.59020 - 0.59027 in.)
Spring free length Minimum32.3 mm (1.272 in.)
POWER STEERING GEAR
Steering rack runout Maximum0.03 mm (0.0012 in.)
Total preload (Control valve rotating torque)0.8 - 1.4 N´m (8 - 14 kgf´cm, 6.9 - 12.2 in.´lbf)
*: For use with belt tension gauge

SS0GA-06
- SERVICE SPECIFICATIONSSTEERING
SS-33
149 Author
: Date
:
2001 AVALON (RM808U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
TILT STEERING COLUMN
Tilt lever lock shaft9.09078 in.´lbf
Turn signal bracket x Steering column upper tube7.57565 in.´lbf
Shift lever housing x Column tube assembly101007
Shift lever set bolt1111 08
Shift lock solenoid bracket x Shift lever housing3.43530 in.´lbf
Shift lock switch guide2.82925 in.´lbf
Universal joint assembly x Main shaft assembly3536026
Steering column assembly set nut2526019
Intermediate shaft sub-assembly x Control valve shaft3536026
Universal joint assembly x Intermediate shaft sub-assembly3536026
Steering wheel set nut5051037
Steering wheel pad set screw (Torx screw)8.89078 in.´lbf
POWER STEERING VANE PUMP
Rear housing set bolt1717012
Pressure port union8385062
Suction port union set bolt131309
Front bracket x Rear bracket4344032
Vane pump pulley set nut4445033
Pressure feed tube x PS vane pump assembly5253038
Oil pressure switch2121015
PS vane pump set bolt A bolt29 (43)300 (440)22 (32)
PS vane pump set bolt B bolt4344032
Pressure feed tube x Pressure feed tube23 (25)230 (250)17 (18)
Clamp plate set nut7.88069 in.´lbf
POWER STEERING GEAR
Control valve housing set bolt1818013
Self-locking nut2525018
Rack housing cap5960043
Rack guide spring cap lock nut50 (69)510 (700)37 (51)
Rack x Rack end60 (83)610 (850)45 (61)
Tie rod end lock nut7475054
Turn pressure tube union nut12 (13)120 (130)9 (9)
PS gear assembly set bolt1811,850134
Stabilizer bar set bolt1919014
Pressure feed and return tubes x Control valve housing28 (25)290 (250)21 (18)
Pressure feed tube clamp plate set nut101007
Intermediate shaft sub-assembly x Control valve shaft3536026
Tie rod end x Steering knuckle4950036
( ): For use without SST

H11878
RS0EF-02
R09725Spiral Cable
H11879
H11880
H11881
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS-3
1523 Author
: Date
:
2001 AVALON (RM808U)
OPERATION
1. STEERING WHEEL PAD (with AIRBAG)
The inflater and bag of the SRS are stored in the steering wheel
pad and cannot be disassembled. The inflater contains a squib,
igniter charge, gas generator, etc., and inflates the bag when
instructed by the airbag sensor assembly.
2. SPIRAL CABLE (in COMBINATION SWITCH)
A spiral cable is used as an electrical joint from the vehicle body
side to the steering wheel.
3. FRONT PASSENGER AIRBAG ASSEMBLY
The inflater and bag of the SRS are stored in the front passen-
ger airbag assembly and cannot be disassembled. The inflater
contains a squib, igniter charge, gas generator, etc., and in-
flates the bag when instructed by the airbag sensor assembly.
4. SIDE AIRBAG ASSEMBLY
The inflater and bag of the SRS side airbag are stored in the
side airbag assembly and cannot be disassembled. The inflater
contains a squib, igniter charge, gas generator, etc., and in-
flates the bag when instructed by the side airbag sensor assem-
bly.
5. SEAT BELT PRETENSIONER
The seat belt pretensioner system is a component of the front
seat outer belt. The pretensioner contains a squib, gas genera-
tor, wire, piston, etc., and operates in the event of a frontal colli-
sion. The seat belt pretensioner cannot be disassembled.

H11971
Airbag Sensor
Assembly12
3
8
9
10
Side Airbag Assembly (RH)
(Squib)
11
12
13
14
Seat Belt Pretensioner (RH)
Side Airbag Sensor
Assembly (RH)
Front Airbag Sensor (RH)
5
Front Passenger Airbag
Assembly (Squib)
Spiral Cable7
Steering Wheel
Pad (Squib) 6
15
Front Airbag Sensor (LH)
Side Airbag Sensor
Assembly (LH)
Seat Belt Pretensioner (LH)
Side Airbag Assembly (LH)
(Squib) 4
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS-5
1525 Author
: Date
:
2001 AVALON (RM808U)
10. SRS CONNECTORS
HINT:
SRS connectors are located as shown in the following illustra-
tion.
No.ItemApplication
(1)Terminal Twin-Lock MechanismConnectors 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
(2)Airbag Activation Prevention MechanismConnectors 1, 2, 3, 4, 5, 6, 7, 15
(3)Electrical Connection Check MechanismConnectors 1, 2, 3
(4)Connector Twin-Lock MechanismConnectors 5

AB0089
Secondary Lock
Primary LockLockLock
Primary Lock Incomplete
(Secondary Lock Prevented)Primary Lock Complete
(Secondary Lock Permitted)Twin-Lock Completed
Z14034
Fig.1
Fig.2Power Source
Safing
Sensor
Squibs
Deceleration Sensor RS-8
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
1528 Author
: Date
:
2001 AVALON (RM808U)
(4) Connector Twin-Lock Mechanism
With this mechanism connectors (male and female
connectors) are locked by 2 locking devices to in-
crease the connection reliability. If the primary lock
is incomplete, ribs interfere and prevent the sec-
ondary lock.
(b) When the vehicle is involved in a frontal collision in the
hatched area (Fig. 1) and the shock is larger than the pre-
determined level, the SRS is activated automatically. A
safing sensor is designed to go on at a smaller decelera-
tion rate than the airbag sensor. As illustrated in Fig. 2,
ignition is caused when current flows to the squib, which
happens when a safing sensor and the deceleration sen-
sor go on simultaneously. When a deceleration force acts
on the sensors, 2 squibs in the driver airbag and front pas-
senger airbag ignite and generate gas. The gas discharg-
ing into the driver airbag and front passenger airbag rap-
idly increases the pressure inside the bags, breaking
open the steering wheel pad and instrument panel.
Bag inflation then ends, and the bags deflate as the gas
is discharged through discharge holes at the bag's rear or
side.

H01586
Slider
Disconnection is completed Slider
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS-1 1
1531 Author
: Date
:
2001 AVALON (RM808U)
(a) Align a lock part of male connector and a slider of female
connector in the same direction as shown in the illustra-
tion, fit in them without rubbing.
(b) Be sure to insert until they are locked. After fitting in pull
them slightly to check that they are locked. (When locked,
make sure that the outer returns to its original position and
sound at the time of fitting in can be heard.)
HINT:
As the slider slides, do not touch it.
Be careful not to deform the release board. If the release
board is deformed, replace it with a new one.
15. DISCONNECTION OF CONNECTORS FOR STEERING
WHEEL PAD (with AIRBAG) AND FRONT PAS-
SENGER AIRBAG ASSEMBLY
(a) Place a finger on the slider.
(b) Slide the slider to release lock.
(c) Disconnect the connector.

H01587
Slider
Slider
RS-12
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
1532 Author
: Date
:
2001 AVALON (RM808U)
16. CONNECTION OF CONNECTORS FOR STEERING
WHEEL PAD (with AIRBAG) AND FRONT PAS-
SENGER AIRBAG ASSEMBLY
(a) Align a lock part of male connector and a slider of female
connector in the same direction as shown in the illustra-
tion, fit in them without rubbing.
(b) Be sure to insert until they are locked. After fitting in pull
them slightly to check that they are locked. (When locked,
make sure that the outer returns to its original position and
sound at the time of fitting in can be heard.)
HINT:
As the slider slides, do not touch it.
Be careful not to deform the release board. If the release
board is deformed, replace it with a new one.

RS01Y-34
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS-1
1521 Author
: Date
:
2001 AVALON (RM808U)
SRS AIRBAG
PRECAUTION
CAUTION:

The AVALON is equipped with SRS, which comprises a driver airbag, front passenger airbag
and side airbag. Failure to carry out service operations in the correct sequence could cause
the SRS to unexpectedly deploy during servicing, possibly leading to a serious accident. Fur-
ther, if a mistake is made in servicing the SRS, it is possible that the SRS may fail to operate
when required. Before performing servicing (including removal or installation of parts, inspec-
tion or replacement), be sure to read the following items carefully, then follow the correct proce-
dures described in the repair manual.

Work must be started 90 seconds after the ignition switch is turned to the ºLOCKº position and
the negative (-) terminal cable is disconnected from the battery.
(The SRS is equipped with a back-up power source so that if work is started within 90 seconds
from disconnecting the negative (-) terminal cable of the battery, the SRS may be deployed.)

Do not expose the steering wheel pad, front passenger airbag assembly, side airbag assembly,
airbag sensor assembly, front airbag sensor or side airbag sensor assembly directly to hot air
or flames.
NOTICE:

Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most impor-
tant source of information when troubleshooting. When troubleshooting the SRS, always in-
spect the DTCs before disconnecting the battery.

Even in cases of a minor collision where the SRS does not deploy, the steering wheel pad, front
passenger airbag assembly, side airbag assembly, airbag sensor assembly, front airbag sen-
sor and side airbag sensor assembly should be inspected.
(See page RS-15, RS-30, RS-44, RS-57, RS-64, RS-69, RS-74 and RS-79)

Before repairs, remove the airbag sensor if shocks are likely to be applied to the sensor during
repairs.

Never use SRS parts from another vehicle. When replacing parts, replace them with new parts.

Never disassemble and repair the steering wheel pad, front passenger airbag assembly, side
airbag assembly, airbag sensor assembly, front airbag sensor or side airbag sensor assembly
in order to reuse it.

If the steering wheel pad, front passenger airbag assembly, side airbag assembly, airbag sen-
sor assembly, front airbag sensor or side airbag sensor assembly has been dropped, or if there
are cracks, dents or other defects in the case, bracket or connector, replace it with new one.

Use a volt/ohmmeter with high impedance (10 kW/V minimum) for troubleshooting the system's
electrical circuits.

Information labels are attached to the periphery of the SRS components. Follow the instruc-
tions on the notices.

After work on the SRS is completed, perform the SRS warning light check (See page DI-349).

When the negative (-) terminal cable is disconnected from the battery, the memory of the clock
and audio system will be canceled. So before starting work, make a record of the contents mem-
orized in the audio memory system. When work is finished, reset the audio systems as they
were before and adjust the clock. This vehicle has power seat which are all equipped with
memory function. However, it is not possible to make a record of the memory contents. So when
the work is finished, it will be necessary to explain this fact to the customer, and ask the custom-
er to adjust the features and reset the memory. To avoid erasing the memory in each memory
system, never use a back- up power supply from outside the vehicle.