TOYOTA AVALON 2001 Service Repair Manual
Manufacturer: TOYOTA, Model Year: 2001, Model line: AVALON, Model: TOYOTA AVALON 2001Pages: 1897, PDF Size: 26.61 MB
Page 1721 of 1897
RS0LD-01
- SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG ASSEMBLY (Power Adjuster Type)
RS-51
1571 Author: Date:
2001 AVALON (RM808U)
REPLACEMENT
REPLACEMENT REQUIREMENTS
In the following cases, replace the seatback assembly or seatback cover.
CaseReplacing part
If the side airbag has been deployed.Seatback assembly
If the side airbag assembly has been found to be faulty in troubleshooting.Seatback assembly
If the side airbag assembly has cuts during checking items
(See page RS-44).Seatback assembly
If the seatback cover has cuts and frayed seams during checking items
(See page RS-44).Seatback cover
If the side airbag assembly has been found to be faulty during checking items
(See page RS-44).Seatback assembly
If the seatback cover has been found to be faulty during checking items
(See page RS-44).Seatback cover
If the seatback assembly has been dropped.Seatback assembly
CAUTION:
For removal and installation of the seatback assembly, see page RS-42 and RS-52. Be sure to follow
the correct procedure.
Page 1722 of 1897
RS06C-08
H11915
: Specified torqueN´m (kgf´cm, ft´lbf)Side Airbag Sensor Assembly
Center Pillar Lower Garnish
Front Seat Outer
Belt Retractor
Rear Door Scuff Plate
Front Door Scuff Plate
Rear Seat Cushion
41 (420, 30)
7.4 (75, 65 in.´lbf)
20 (205, 15)
- SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG SENSOR ASSEMBLY
RS-77
1597 Author: Date:
2001 AVALON (RM808U)
SIDE AIRBAG SENSOR ASSEMBLY
COMPONENTS
Page 1723 of 1897
RS06E-07
- SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG SENSOR ASSEMBLY
RS-79
1599 Author: Date:
2001 AVALON (RM808U)
INSPECTION
1. VEHICLES NOT INVOLVED IN COLLISION
Do a diagnostic system check (See page DI-349).
2. VEHICLE INVOLVED IN COLLISION AND AIRBAG IS NOT DEPLOYED
Do a diagnostic system check (See page DI-349).
3. VEHICLE INVOLVED IN COLLISION AND AIRBAG IS DEPLOYED
Replace the side airbag sensor assembly (See page DI-349).
Page 1724 of 1897
RS0LY-01
H11916
- SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG SENSOR ASSEMBLY
RS-81
1601 Author: Date:
2001 AVALON (RM808U)
INSTALLATION
NOTICE:
Never use SRS parts from another vehicle. When re-
placing parts, replace them with new ones.
Never reuse the side airbag sensor assembly in-
volved in a collision when the airbag has deployed.
Never repair a sensor in order to reuse it.
HINT:
For step 2 to 6, refer to page BO-137.
1. INSTALL SIDE AIRBAG SENSOR
(a) Install the side airbag assembly with 3 bolts.
Torque: 20 N´m (205 kgf´cm, 15 ft´lbf)
(b) Connect the connector.
NOTICE:
Connection of the connector is done after the sensor
assembly has been installed.
Make sure the sensor assembly is installed with the
specified torque.
If the sensor assembly has been dropped, or there are
cracks, dents or other defects in the case, bracket or
connector, replace the sensor assembly with a new
one.
When installing the sensor assembly, take care that
the SRS wiring does not interfere with other parts and
is not pinched between other parts.
After installation, shake the sensor assembly to
check that there is no looseness.
2. INSTALL RETRACTOR OF FRONT SEAT OUTER BELT
Torque:
Upper bolt: 7.4 N´m (75 kgf´cm, 65 in.´lbf)
Lower bolt: 41 N´m (420 kgf´cm, 30 ft´lbf)
3. INSTALL CENTER PILLAR LOWER GARNISH
4. INSTALL FRONT DOOR SCUFF PLATE
5. INSTALL REAR DOOR SCUFF PLATE
6. INSTALL REAR SEAT CUSHION
Page 1725 of 1897
RS0LX-01
H11916
RS-78
- SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG SENSOR ASSEMBLY
1598 Author: Date:
2001 AVALON (RM808U)
REMOVAL
NOTICE:
Do not open the cover or the case of the ECU and various
electrical devices unless absolutely necessary.
(If the IC terminals are touched, the IC may be destroyed by
static electricity.)
HINT:
For step 1 to 5, refer to page BO-128.
1. REMOVE REAR SEAT CUSHION
2. REMOVE REAR DOOR SCUFF PLATE
3. REMOVE FRONT DOOR SCUFF PLATE
4. REMOVE CENTER PILLAR LOWER GARNISH
5. REMOVE RETRACTOR OF FRONT SEAT OUTER
BELT
6. REMOVE SIDE AIRBAG SENSOR ASSEMBLY
(a) Disconnect the connector.
NOTICE:
Remove the connector with the sensor assembly installed.
(b) Remove the 3 bolts and side airbag sensor assembly.
Page 1726 of 1897
RS06F-04
RS-80
- SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG SENSOR ASSEMBLY
1600 Author: Date:
2001 AVALON (RM808U)
REPLACEMENT
REPLACEMENT REQUIREMENTS
In the following cases, replace the side airbag sensor assembly.
If the side airbag assembly has been deployed in a collision.
If the side airbag sensor assembly has been found to be faulty in troubleshooting.
If the side airbag sensor assembly has been dropped.
CAUTION:
For removal and installation of the side airbag sensor assembly, see page RS-78 and RS-81. Be sure
to follow the correct procedure.
Page 1727 of 1897
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.
Page 1728 of 1897
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.
Page 1729 of 1897
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
Page 1730 of 1897
Z05953
Spacer
Housing
Female Male
R10587
When Connector is Connected When Connector is Disconnected
Short Spring Plate
Housing
Housing
Terminal
ConnectorsShort Spring PlateSquib
Closed CircuitSquib Short Spring Plate ONContacting Male Terminal Short Spring Plate
RS-6
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
1526 Author: Date:
2001 AVALON (RM808U)
(a) All connectors in the SRS are colored in yellow to distin-
guish them from other connectors. Connectors having
special functions and specifically designed for the SRS
are used in the locations shown on the previous page to
ensure high reliability. These connectors use durable
gold-plated terminals.
(1) Terminal Twin-Lock Mechanism
Each connector has a two-piece component con-
sisting of a housing and a spacer. This design en-
ables the terminal to be locked securely by two lock-
ing devices (the retainer and the lance) to prevent
terminals from coming out.
(2) Airbag Activation Prevention Mechanism
Each connector contains a short spring plate. When
the connector is disconnected, the short spring
plate automatically connects positive (+) terminal
and negative (-) terminal of the squib.