sensor TOYOTA T100 1996 Factory Service Manual

Downloaded from www.Manualslib.com manuals search engine R08038
H03005
Connector 1Connector 2
No.1 J/B
Connector 3
Spiral CableConnector 4
Squib
Rh and LH Front
Airbag Sensor
Connector 5 Center Airbag
Sensor Assembly
Z05953
Spacer
Housing
Female Male
− SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS−3
1996 TOYOTA T100 (RM449U)
5. FRONT AIRBAG SENSOR
The front airbag sensor is mounted inside each of the front
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 sensor cannot be disassembled.
6. SRS CONNECTORS
No.ItemApplication
(1)Terminal Twin−Lock MechanismConnectors 2, 3, 4
(2)Airbag Activation Prevention MechanismConnectors 1, 3, 4
(3)Electrical Connection Check MechanismConnectors 1, 5
(4)Connector Twin−Lock MechanismConnectors 3, 4
(a) All connectors in the SRS are colored yellow to distin-
guish them from other connectors. Connectors having
special functions and specifically designed for the SRS
are used in the locations shown above to ensure high reli-
ability. These connectors use durable gold−plated termi-
nals.
(1) Terminal Twin−Lock Mechanism
Each connector has a two−piece component con-
sisting of a housing and a spacer. This design se-
cures the locking of the terminal by two locking de-
vices (the retainer and the lance) to prevent
terminals from coming out.

Downloaded from www.Manualslib.com manuals search engine R07799
Connection
Detection
Pin
Resistor
Front Airbag Sensor
R10586
Connection Detection Pin
Terminal for Diagnosis
SlopeConnection Detection
Pin Contacting Terminal Half Connection
Complete Connection
Z05490
Secondary Lock
Ribs
Primary Lock
LockLock
Primary Lock Incomplete
(Secondary Lock Prevented)Primary Lock Complete
(Secondary Lock Permitted)Twin−Lock Completed
− SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS−5
1996 TOYOTA T100 (RM449U)
(3) Electrical Connection Check Mechanism
This mechanism electrically checks if connectors
are connected correctly and completely. The electri-
cal connection check mechanism is designed so
that the disconnection detection pin connects with
the diagnosis terminals when the connector hous-
ing lock is locked.
(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.

Downloaded from www.Manualslib.com manuals search engine Z14845
Safing SensorFig.1
Power Source
Fig.2
Squib
Front
Airbag
Sensor Center
Airbag
Sensor RS−6
− SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
1996 TOYOTA T100 (RM449U)
(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 airbag sensor go
on simultaneously. When deceleration force acts on the
sensors, squib in the driver airbag ignite and generate
gas. The gas discharging into the driver airbag rapidly in-
creases the pressure inside the bags, breaking open the
steering wheel pad.
Bag inflation then ends, and the bags deflate as the gas
is discharged through discharge holes at the bag’s rear or
side.

Downloaded from www.Manualslib.com manuals search engine RS03P−03
− SUPPLEMENTAL RESTRAINT SYSTEMAIRBAG SENSOR ASSEMBLY
RS−21
1788 Author: Date:
1996 TOYOTA T100 (RM449U)
AIRBAG SENSOR ASSEMBLY
COMPONENTS

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RS−22
− SUPPLEMENTAL RESTRAINT SYSTEMAIRBAG SENSOR ASSEMBLY
1996 TOYOTA T100 (RM449U)
REMOVAL
NOTICE:
Do not open the cover or the case of the ECU and various
computers unless absolutely necessary. (If the IC termi-
nals are touched, the IC may be destroyed by static elec-
tricity.)
1. REMOVE THESE PARTS:
(a) Lower center cover
(b) Cruise control ECU
2. REMOVE AIRBAG SENSOR ASSEMBLY
(a) Disconnect the connector.
NOTICE:
Removal of the connector is done with the sensor assem-
bly installed.
(b) Using a torx wrench, remove the 3 screws and the airbag
sensor assembly.
Torx wrench: T40 (Part No. 09042−00020 or locally
manufactured tool)

Downloaded from www.Manualslib.com manuals search engine RS03R−01
R12497
− SUPPLEMENTAL RESTRAINT SYSTEMAIRBAG SENSOR ASSEMBLY
RS−23
1996 TOYOTA T100 (RM449U)
INSPECTION
1. VEHICLE NOT INVOLVED IN COLLISION
Do a diagnostic system check.
(See page DI−365)
2. VEHICLE INVOLVED IN COLLISION AND AIRBAG IS
NOT DEPLOYED
Do a diagnostic system check.
(See page DI−365)
3. VEHICLE INVOLVED IN COLLISION AND AIRBAG IS
DEPLOYED
Replace the airbag sensor assembly.

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RS−24
− SUPPLEMENTAL RESTRAINT SYSTEMAIRBAG SENSOR ASSEMBLY
1996 TOYOTA T100 (RM449U)
REPLACEMENT
REPLACEMENT REQUIREMENTS
In the following cases, replace the airbag sensor assembly.
If the SRS has been deployed in a collision.
If the airbag sensor assembly has been found to be faulty in troubleshooting.
If the airbag sensor assembly has been dropped.
CAUTION:
For removal and installation of the airbag sensor assembly, see page RS−22 and RS−25. Be sure to
follow the correct procedure.

Downloaded from www.Manualslib.com manuals search engine RS03T−03
− SUPPLEMENTAL RESTRAINT SYSTEMAIRBAG SENSOR ASSEMBLY
RS−25
1996 TOYOTA T100 (RM449U)
INSTALLATION
NOTICE:
Never use SRS parts from another vehicle. When re-
placing parts, replace with new ones.
Never reuse the airbag sensor assembly involved in
a collision when the airbag has deployed.
Never repair a sensor in order to reuse it.
1. INSTALL AIRBAG SENSOR ASSEMBLY
(a) Using a torx wrench, install the airbag sensor assembly
with 3 screws.
Torx wrench: T40 (Part No. 09042−0020 or locally
manufactured tool)
Torque: 21 N·m (210 kgf·cm, 15 ft·lbf)
(b) Connect the connector.
NOTICE:
Installation of the connector is done with the sensor
assembly installed. Make sure the sensor assembly
is installed to 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 installing, shake the sensor assembly to check
that there is no looseness.
2. INSTALL REMOVED PARTS

Downloaded from www.Manualslib.com manuals search engine RS03U−03
Z14843
Front Airbag Sensor RH
Front Airbag Sensor LH
BatteryBattery Carrier
Air Cleaner
Assembly RS−26
− SUPPLEMENTAL RESTRAINT SYSTEMFRONT AIRBAG SENSOR
1793 Author: Date:
1996 TOYOTA T100 (RM449U)
FRONT AIRBAG SENSOR
COMPONENTS

Downloaded from www.Manualslib.com manuals search engine RS03V−01
− SUPPLEMENTAL RESTRAINT SYSTEMFRONT AIRBAG SENSOR
RS−27
1996 TOYOTA T100 (RM449U)
REMOVAL
NOTICE:
If the wiring connector of the SRS is disconnected with the ignition switch at ON or ACC posi-
tion, DTCs will be recorded.
Never use SRS parts from another vehicle. When replacing parts, replace them with new ones.
Never reuse the sensor involved in a collision when the SRS has been deployed.
Never repair a sensor in order to reuse it.
1. REMOVE THESE PARTS:
(a) Battery
(b) Air cleaner assembly
2. REMOVE FRONT AIRBAG SENSOR
(a) Disconnect the connector.
(b) Using a torx wrench, loosen the 2 screws and the sensor.
Torx wrench: T40 (Part No. 09042−00020 or locally manufactured tool)