Toyota Sequoia (2005). Manual — part 332
H23980
Side Airbag Assembly
Deployment Signal
Deceleration Sensor ON
Electric Safing Sensor ON
AND
OR
Airbag Inflating
Curtain Shield Airbag Sensor Assembly
Airbag Sensor Assembly
Curtain Shield Airbag Assembly
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–1123
1317
(c)
w/ Side and curtain shield airbag:
Operation in case of rear side collision.
Electronic safing sensor of the airbag sensor assembly is designed to activate at a smaller deceleration
rate than the deceleration sensor of the curtain shield airbag sensor assembly. As illustrated below,
when both the electronic safing sensor and deceleration sensor go on simultaneously, current flows
to the squib and ignition occurs.
H24635
Rollover Detection:
Side Collision and Rollover Detection:
(a)
(b)
Airbag Sensor Assembly
Roll Rate Sensor 1
Roll Rate Sensor 2
Lateral Deceleration Sensor
Curtain Shield Airbag
Assembly (LH and RH)
Seat Belt Pretensioner
(LH and RH)
(c)
(b)
Airbag Sensor Assembly
Roll Rate Sensor 1
Roll Rate Sensor 2
Lateral Deceleration Sensor
Curtain Shield Airbag
Sensor Assembly
Side Airbag Sensor
Assembly (
)
Curtain Shield Airbag
Assembly (LH and RH)
Seat Belt Pretensioner
(LH and RH)
Side Airbag of Collision
Side (
)
Activate depending on the
condition of the collision.
:
DI–1124
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
1318
(d)
w/ Side and curtain shield airbag:
Roll sensing of curtain shield airbag control.
(1)
The airbag sensor assembly contains a roll rate sensor and roll rate sensor (that determine the
inclination angle the vehicle) and a lateral deceleration sensor (that determine the lateral force
that is applied to the vehicle). These sensors detect the vehicle’s roll angle, rotational speed, and
lateral acceleration speed.
(2)
Based on the information obtained from sensors, the airbag sensor assembly makes an overall
judgment of the vehicle’s roll angle rotational speed, and lateral acceleration speed. If the airbag
sensor determines that the vehicle has rolled over due to cause other than the side collision, it
deploys the right and left curtain shield airbags and the front right and left seat belt pretensioners.
(3)
This system provides a roll sensing of curtain shield airbags cutoff switch (RSCA OFF switch)
on the driver side of the instrument panel with which the driver can stop the operation of the func-
tion.
(4)
By operating the RSCA OFF switch and while the roll sensing of the curtain shield airbag control
is OFF, and when the airbag sensor assembly judges to operate the side and curtain shield air-
bag system in the event of side collision, it is no need prohibit this operation.
H23981
Occupant
Classification Sensor
Occupant
Classification ECU
Occupant Load
A
A – A Cross Section
Occupant
Classification Sensor
Occupant
Classification Sensor
A
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–1125
1319
3.
DESCRIPTION OF OCCUPANT CLASSIFICATION SYSTEM
(a)
GENERAL DESCRIPTION.
(1)
In the occupant classification system, the occupant classification ECU calculates the weight of
the occupant based on a signal from the occupant classification sensor. This system recognizes
the occupant to be a child if it detects a weight of less than 36 kg (79.37 lb), and disables the
front and side airbags.
(2)
This system is mainly comprised of 4 occupant classification sensors that detect the load on the
front passenger seat. The occupant classification ECU controls the system, and the passenger
airbag ON/OFF indicator indicates the ON/OFF condition of the front passenger airbag assembly
and side airbag assembly (passenger side).
(b)
OCCUPANT CLASSIFICATION SENSOR.
The occupant classification sensors are installed on 4 brackets connecting the seat rail and seat frame.
Accordingly, when load is applied to the passenger seat by an occupant sitting in it, the occupant classi-
fication sensors register a distortion.
DI6OW–27
Warning Light Check
P.
END
DTC Check (Read Past DTC)
Symptom Simulation
Normal
System Code
DTC Check
Warning Light ON
Trouble
Code
Warning Light
Remains OFF
Circuit Inspection
Identification of Problem
Repair
Warning Light Check
DTC Check (Read Past DTC)
Confirmation Test
Remains ON
Remains OFF
Clear DTC
Item inside are titles of pages in this manual,
with the page number in the bottom portion. See the
pages for detailed explanations.
1
2
4
3
5
7
8
9
10
DTC Chart
DTC Chart
6
11
12
P.
P.
P.
Remains OFF
Remains ON
Vehicle Brought to Workshop
Customer Problem Analysis
DTC Check (Read Present DTC)
P.
P.
Step 3, 4, 8, 9, 10, 12: Diagnostic steps permitting the use
of the hand–held tester.
DI–1126
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
1320
HOW TO PROCEED WITH TROUBLESHOOTING
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