2001 TOYOTA AVALON ignition

RS0L6-01
H11900
H11897
H11898
RS-28
- SUPPLEMENTAL RESTRAINT SYSTEMFRONT PASSENGER AIRBAG ASSEMBLY
1548 Author
: Date
:
2001 AVALON (RM808U)
REMOVAL
NOTICE:

If the wiring connector of the SRS is disconnected
and the ignition switch is in ON or ACC position, DTCs
will be recorded.

Never use the airbag parts from another vehicle.
When replacing parts, replace them with new parts.
1. DISCONNECT AIRBAG CONNECTOR
(a) Using a screwdriver, pry out the glove compartment door
finish plate inside the lower panel.
HINT:
Tape the screwdriver tip before use.
(b) Remove the connector from the glove compartment door
finish plate.
NOTICE:
When handling the airbag connector, take care not to dam-
age the airbag wire harness.
(c) Disconnect the airbag connector.
2. REMOVE INSTRUMENT PANEL (See page BO-90)
3. REMOVE FRONT PASSENGER AIRBAG ASSEMBLY
(a) Remove the screw and No. 5 heater to resister duct.
(b) Remove the 2 screws and No. 4 heater to resister duct.
(c) Remove the 2 screws and part of instrument panel wire
harness, as shown in the illustration.
(d) Remove the 2 screws and center bracket.
(e) Remove the 6 nuts and front passenger airbag assembly,
as shown in the illustration.
CAUTION:

Do not store the front passenger airbag assembly
with the airbag deployment side facing downward.

Never disassemble the front passenger airbag as-
sembly.
4. REMOVE NO. 1 SAFETY PAD
(a) Separate the wire harness from the No. 1 safety pad.

RS0LG-01
H11931
H11927
H11928
H11929
RS-56
- SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG ASSEMBLY (Manual Adjuster Type)
1576 Author
: Date
:
2001 AVALON (RM808U)
REMOVAL
NOTICE:

If the wiring connector of the SRS is disconnected
and the ignition switch is at ON or ACC position, DTCs
will be recorded.

Never use the airbag parts from another vehicle.
When replacing parts, replace them with new parts.
1. REMOVE FRONT SEAT
(a) Remove the 4 seat track covers and 4 bolts.
(b) Disconnect the side airbag connector.
NOTICE:
When handling the airbag connector, take care not to dam-
age the airbag wire harness.
(c) Remove the front seat.
2. REMOVE HEADREST
3. REMOVE RECLINING ADJUSTER KNOB
4. REMOVE FRONT SEAT CUSHION SHIELD
Remove the 2 screws and front seat cushion shield.
5. REMOVE INNER FRONT SEAT CUSHION SHIELD
Remove the 2 scerws and front seat cushion inner shield.
6. REMOVE SEATBACK ASSEMBLY
(a) Remove the hog rings.
(b) Remove the wire harness of the side airbag assembly.
NOTICE:
When handling the airbag wire harness, take care not to
damage the airbag wire harness.
(c) Remove the 4 bolts and seatback assembly.

RS0LA-01
H11931
H11919
H11920
RS-42
- SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG ASSEMBLY (Power Adjuster Type)
1562 Author
: Date
:
2001 AVALON (RM808U)
REMOVAL
NOTICE:

If the wiring connector of the SRS is disconnected
and the ignition switch is at ON or ACC position, DTCs
will be recorded.

Never use the airbag parts from another vehicle.
When replacing parts, replace them with new parts.
1. REMOVE FRONT SEAT
(a) Remove the 4 seat track covers and 4 bolts.
(b) Disconnect the power seat and side airbag connector.
NOTICE:
When handling the airbag connector, take care not to dam-
age the airbag wire harness.
(c) Remove the front seat.
2. REMOVE HEADREST
3. Driver 's seat with bench type:
REMOVE SEAT ARMREST ASSEMBLY
Remove the cover, bolt and seat armrest assembly.
4. REMOVE POWER SEAT SWITCH KNOBS
5. REMOVE FRONT SEAT CUSHION SHIELD
Remove the 5 screws and front seat cushion shield, as shown
in the illustration.
6. REMOVE FRONT SEAT INNER BELT
7. REMOVE FRONT SEAT CUSHION INNER SHIELD
Remove the 2 screws and front seat inner belt.
8. REMOVE SEAT CUSHION ASSEMBLY
(a) Remove the wire harness from the seat cushion assem-
bly.

H11969
H11882
Floor Shift:
Column Shift:
H11883
H11884
RS-4
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
1524 Author
: Date
:
2001 AVALON (RM808U)
6. SRS WARNING LIGHT
The SRS warning light is located on the accessory meter. It
goes on to alert the driver of trouble in the system when a mal-
function is detected in the airbag sensor assembly self-diagno-
sis. In normal operation conditions when the ignition switch is
turned to the ACC or ON position, the light goes on for about 6
seconds and then goes off.
7. AIRBAG SENSOR ASSEMBLY
The airbag sensor assembly is mounted on the floor inside the
lower center finish panel. The airbag sensor assembly consists
of an airbag sensor, safing sensor, diagnosis circuit, ignition
control, drive circuit, etc. It receives signals from the airbag sen-
sor, front airbag sensor, side airbag sensor assembly and door
side airbag assembly and judges whether the SRS must be ac-
tivated or not. The airbag sensor assembly cannot be disas-
sembled.
8. FRONT AIRBAG SENSOR
The front airbag sensor is mounted inside each of the side
members. The sensor unit is a mechanical type. When the sen-
sor detects deceleration force above a predetermined limit,
contact is made in the sensor, sending a signal to the airbag
sensor assembly. The front airbag sensor cannot be disas-
sembled.
9. SIDE AIRBAG SENSOR ASSEMBLY
The side airbag sensor assembly is mounted in the LH and RH
center pillars. The side airbag sensor assembly consists of a lat-
eral deceleration sensor, safing sensor, diagnosis circuit, etc.
It sends signals to the airbag sensor assembly to judge whether
the SRS side airbag must be activated or not. The side airbag
sensor assembly cannot be disassembled.

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.

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.

H11891
Connector
AB0163
Wire Harness
Diameter
Stripped Wire Harness Section
H11892
L
M
RS-20
- SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLE
1540 Author
: Date
:
2001 AVALON (RM808U)
(a) Remove the steering wheel pad (See page SR-12).
CAUTION:

When removing the steering wheel pad, 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.

When storing the steering wheel pad, keep the upper
surface of the pad facing upward.
(b) Remove the connector on the rear surface of the steering
wheel pad from the bracket.
(c) Using a service-purpose wire harness tie down the steer-
ing wheel pad to the disc wheel.
Wire harness: Stripped wire harness section
1.25 mm
2
or more (0.0019 in2. or more)
CAUTION:
If a wire harness which is too thin or some other thing is
used to tie down the steering wheel pad, it may be snapped
by the shock when the airbag is deployed. This is highly
dangerous. Always use a wire harness for vehicle use
which is at least 1.25 mm
2
(0.0019 in2.).
HINT:
To calculate the square of the stripped wire harness section:
Square = 3.14 x (Diameter)
2 divided by 4
(1) Install the 2 bolts with washers in the 2 bolt holes in
the steering wheel pad.
Bolt:
L: 35. mm (1.387 in.)
M: 6.0 mm (0.236 in.)
Pitch: 1.0 mm (0.039 in.)
NOTICE:

Tighten the bolts by hand until the bolts become diffi-
cult to turn.

Do not tighten the bolts too much.

F09909
Column shift:
Shift Lever


Shift Lever Housing11 (110, 8)

10 (100, 7)
Shift Lock
Control ECU
2.8 (29, 25 in.´lbf)
3.4 (35, 30 in.´lbf)

Shift Lock Switch
Corrugate Tube
No. 2 Steering
Column Ring

Spring
RetainerCompression Spring
Main Shaft
Bushing
Main Shaft Collar
7.5 (75, 65 in.´lbf)



Turn Signal Bracket
Steering Column Upper Tube
Tilt Lever Lock ShaftTilt Lever Tension Spring


9.0 (90, 78 in.´lbf)
Spring Guide
Tilt Spring
No. 2 Tilt Steering Bolt
Tapered-head Bolt Key Interlock Solenoid Key Unlock
Warning SwitchColumn Upper
Bracket
Main Shaft Assembly



Transponder Key Coil
Key Cylinder
Lamp Assembly
Ignition Switch
Transponder Key
Amplifier
N´m (kgf´cm, ft´lbf) : Specified torque

Non-reusable part
Molybdenum disulfide lithium base greaseShift Lock
Solenoid Bracket
No. 2 Tilt
Steering Bolt

Column Tube Assembly
w/ Engine immobiliser system:
w/ Engine immobiliser system:
Key Cylinder
- STEERINGTILT STEERING COLUMN
SR-1 1
1474
2001 AVALON (RM808U)