Page 2769 of 3115

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
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS-9
2284 Author: Date:
2004 LAND CRUISER (RM1071U)No.
ItemApplication
(1)Terminal Twin-Lock MechanismConnectors 1, 2, 3, 4, 5, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19,
20, 21, 22, 23, 24
(2)Activation Prevention MechanismConnectors 1, 2, 3, 4, 5, 6, 10, 13, 14, 21, 22, 25
(3)Electrical Connection Check MechanismConnectors 1, 2, 3
(4)Half Connection Prevention MechanismConnectors 4, 5, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
22, 23, 24
(5)Connector Lock MechanismConnectors 6
(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 al-
lows the terminal to be locked securely by two lock-
ing devices (the retainer and the lance) to prevent
terminals from coming out.
(2) 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.
Page 2770 of 3115
H20053
Disconnection
Detection
Pin
Airbag Sensor Assembly
H01315
Terminal for Diagnosis
Disconnection Detection Pin Half ConnectionComplete Connection
Terminal for
Diagnosis
RS-10
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
2285 Author: Date:
2004 LAND CRUISER (RM1071U)
HINT:
The type of connector is shown in the diagram on the previous
page.
(3) Electrical Connection Check Mechanism
This mechanism electrically checks that connectors
are connected correctly and completely. The electri-
cal connection check mechanism is designed so
that the disconnection detection pin is connected
with the diagnosis terminals when the connector
housing lock is locked.
HINT:
The illustration shows connectors º1º, º2º and º3º in
step 13.
Connectors 2 and 3 also have similar mechanism.
Page 2771 of 3115

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.
Page 2772 of 3115

H02763
Outer
H02764
Lock of connector is released
Disconnection is completed
H02768
Outer
Outer
Connection is completed RS-12
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
2287 Author: Date:
2004 LAND CRUISER (RM1071U)
14. DISCONNECTION OF CONNECTORS FOR FRONT
AIRBAG SENSOR, SIDE AND CURTAIN SHIELD AIR-
BAG SENSOR AND CURTAIN SHIELD AIRBAG SEN-
SOR
(a) While holding both flank sides of the outer, slide the outer
in the direction shown by an arrow.
(b) Lock of the connectors is released, and then disconnect
the connectors.
HINT:
Be sure to hold both flank sides of the outer. If holding the top
and bottom sides, it will obstruct disconnection.
15. CONNECTION OF CONNECTORS FOR FRONT AIR-
BAG SENSOR, SIDE AND CURTAIN SHIELD AIRBAG
SENSOR AND CURTAIN SHIELD AIRBAG SENSOR
(a) Align the male connector (of the side of sensor) and fe-
male connector in the same direction as shown in the il-
lustration and fit them in without rubbing.
(b) As they are fitted in, the outer slides rearward. Press it un-
til the outer returns to its original position again.
If fitting stops half way, connectors will separate.
(c) 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 to be fit in can be heard.)
Page 2773 of 3115
H01584
Slider
Disconnection is completed Slider
H01585
SliderSlider
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS-13
2288 Author: Date:
2004 LAND CRUISER (RM1071U)
HINT:
Do not fit in while holding the outer.
When fitting in, the outer slides. Do not touch it.
16. DISCONNECTION OF SIDE AIRBAG CONNECTOR
(a) Place a finger on the slider.
(b) Slide the slider to release lock.
(c) Disconnect the connector.
17. CONNECTION OF SIDE AIRBAG CONNECTOR
(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 them in 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 to be fit 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.
Page 2774 of 3115
H01586
Slider
Disconnection is completed Slider
RS-14
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
2289 Author: Date:
2004 LAND CRUISER (RM1071U)
18. DISCONNECTION OF CONNECTORS FOR CURTAIN
SHIELD AIRBAG ASSEMBLY AND FRONT PAS-
SENGER AIRBAG ASSEMBLY
(a) Place a finger on the slider.
(b) Slide the slider to release lock.
(c) Disconnect the connector.
Page 2775 of 3115
H01587
Slider
Slider
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS-15
2290 Author: Date:
2004 LAND CRUISER (RM1071U)
19. CONNECTION OF CONNECTORS FOR CURTAIN
SHIELD AIRBAG ASSEMBLY 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 them in 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 to be fit 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.
Page 2776 of 3115

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).