1998 TOYOTA LAND CRUISER steering

SS-44
- SERVICE SPECIFICATIONSSTEERING
184 Author
: Date
:
2004 LAND CRUISER (RM1071U) Tie rod end x Steering knuckle
7273053
Engine oil filter assembly set bolt and nut1818013
( ): For use without SST

H20912
RS0VH-01
H20913Spiral Cable
H21094
H20914
H20915
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS-3
2278 Author
: Date
:
2004 LAND CRUISER (RM1071U)
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. CURTAIN SHIELD AIRBAG ASSEMBLY
The inflater and bag of the SRS are stored in the curtain shield
airbag assembly and cannot be disassembled. The inflater con-
tains a squib, igniter charge, gas generator, etc., and inflates
the bag when instructed by the side airbag sensor assembly.

H21890
Airbag
Sensor
Assembly12
3
8
91011
14
Front Airbag Sensor RH
5
Front Passenger Airbag
Assembly (Squib)
Spiral
Cable7Steering Wheel
Pad (Squib)6
15
4
16
18
17
19
Seat Belt
Pretensioner RH
Seat Belt
Pretensioner LH
Front Seat Inner Belt LH
Seat Position Sensor Front Airbag Sensor LH
1213
w/o Side Airbag: RS-6
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
2281 Author
: Date
:
2004 LAND CRUISER (RM1071U)
13. SRS CONNECTORS
HINT:
SRS connectors are located as shown in the following illustra-
tion.

H21159
Airbag
Sensor
Assembly12
3
8
9
10
11
12
13
14Side Airbag
Assembly RH (Squib)
Front Airbag Sensor RH
6
Front Passenger Airbag
Assembly (Squib)
Spiral
CableSteering Wheel
Pad (Squib)
7
15
Front Airbag Sensor LH
Side Airbag
Assembly LH (Squib)
5
16
18
17
Curtain Shield Airbag
Sensor Assembly RH
Curtain Shield Airbag
Assembly LH (Squib)
1920
21
22
Seat Belt
Pretensioner RH
Side and Curtain Shield
Airbag Sensor Assembly RH
Side and Curtain Shield
Airbag Sensor Assembly LHCurtain Shield Airbag
Assembly RH (Squib)
Curtain Shield Airbag
Sensor Assembly LH
Seat Belt
Pretensioner LH
Front Seat Inner Belt LH
Seat Position Sensor 23
RSCA Off Switch
24
25
26
RSCA Off Indicator
4
27
2829
w/ Side Airbag: RS-8
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
2283 Author
: Date
:
2004 LAND CRUISER (RM1071U)

C51019H20054
Stopper
Locking PartSpring
Slider
Locking Arm
Rebounded by Slider
(Spring)Stopper
H20055
Z14034
Fig.1
Fig.2Power Source
Safing
Sensor
Squibs
Deceleration Sensor
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS-1 1
2286 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(4) Half connection prevention mechanism:
If the connector is not completely connected, the
connector is disconnected due to the spring opera-
tion to the extent that no continuity exists.
(5) Connector lock mechanism:
Locking the connector lock button securely con-
nects the connector.
(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.

RS0B6-06
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS-1
2276 Author
: Date
:
2004 LAND CRUISER (RM1071U)
SRS AIRBAG
PRECAUTION
CAUTION:

The LAND CRUISER is equipped with SRS, which comprises a driver airbag, front passenger
airbag, side airbag and curtain shield airbag. Failure to carry out service operations in the cor-
rect sequence could cause the SRS to unexpectedly deploy during servicing, possibly leading
to a serious accident. Further, 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, inspection or replacement), be sure to read the following items carefully,
then follow the correct procedures 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,
curtain shield airbag assembly, airbag sensor assembly, front airbag sensor, side and curtain
shield airbag sensor assembly, curtain shield airbag sensor assembly or seat position 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 the case of a minor collision where the SRS does not deploy, the steering wheel pad,
front passenger airbag assembly, side airbag assembly, curtain shield airbag assembly, airbag
sensor assembly, front airbag sensor, side and curtain shield airbag sensor assembly, curtain
shield airbag sensor assembly and seat position sensor assembly should be inspected (See
page RS-18, RS-32, RS-47, RS-60, RS-71, RS-76, RS-81, RS-87 and RS-92).

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, curtain shield airbag assembly, airbag sensor assembly, front airbag sensor,
side and curtain shield airbag sensor assembly, curtain shield airbag sensor assembly or seat
position sensor assembly in order to reuse it.

If the steering wheel pad, front passenger airbag assembly, side airbag assembly, curtain
shield airbag assembly, airbag sensor assembly, front airbag sensor, side and curtain shield
airbag sensor assembly, curtain shield airbag sensor assembly or seat position sensor assem-
bly has been dropped, or if there are cracks, dents or other defects in the case, bracket or con-
nector, 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 notice.

After work on the SRS is completed, perform the SRS warning light check (See page DI-692).

RS0B8-10
H20921
Column Upper Cover Spiral Cable
Steering Wheel
Lower No. 3 Cover
Column Lower Cover
Steering Wheel Pad
: Specified torqueSteering Wheel Lower No. 2 Cover
Torx Screw
Steering
WheelTorx Screw
Lower No. 1 Panel
Cowl Side Trim LH
Front Door Scuff Plate LH
Front Door Opening
Trim LH
Instrument Cluster Finish Panel
8.8 (90, 78 in.´lbf)8.8 (90, 78 in.´lbf)
50 (510, 37)
N´m (kgf´cm, ft´lbf) RS-16
- SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLE
2291 Author
: Date
:
2004 LAND CRUISER (RM1071U)
STEERING WHEEL PAD AND SPIRAL CABLE
COMPONENTS

RS0VJ-01
AB0152
SST
AB0158
SSTBattery RS-20
- SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLE
2295 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DISPOSAL
HINT:
When scrapping vehicle equipped with an SRS or disposing of
a steering wheel pad (with airbag), always first deploy the air-
bag in accordance with the procedure described below. If any
abnormality occurs with the airbag deployment, contact the
SERVICE DEPT. of TOYOTA MOTOR SALES, U.S.A., INC.
CAUTION:

Never dispose of a steering wheel pad of which airbag
has not been deployed.

The airbag produces a sizeable exploding sound
when it deploys, so perform the operation out-of-
doors and where it will not create a nuisance to
nearby residents.

When deploying the airbag, always use the specified
SST (SRS Airbag Deployment Tool). Perform the op-
eration in a place away from electrical noise.
SST 09082-00700

When deploying an airbag, perform the operation at
least 10 m (33 ft) away from the steering wheel pad.

The steering wheel pad is very hot when the airbag is
deployed, so leave it alone for at least 30 minutes af-
ter deployment.

Use gloves and safety glasses when handling a steer-
ing wheel pad with the deployed airbag.

Always wash your hands with water after completing
the operation.

Do not apply water, etc. to a steering wheel pad with
the deployed airbag.
1. AIRBAG DEPLOYMENT WHEN SCRAPPING VE-
HICLE
HINT:
Have a battery ready as the power source to deploy the airbag.