airbag TOYOTA SEQUOIA 2001 Service Repair Manual

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± INTRODUCTIONFOR ALL OF VEHICLES
IN±9
9 Author: Date:
2005 SEQUOIA (RM1146U)
FOR ALL OF VEHICLES
PRECAUTION
1. FOR VEHICLES EQUIPPED WITH SRS AIRBAG AND
SEAT BELT PRETENSIONER
(a) The SEQUOIA is equipped with an SRS (Supplemental
Restraint System), such as the driver airbag, front pas-
senger airbag, side airbag assembly, curtain shield airbag
assembly and seat belt pretensioner.
Failure to carry out service operations in the correct se-
quence could cause the supplemental restraint system to
unexpectedly deploy during servicing, possibly leading to
a serious accident.
Further, if a mistake is made in servicing the supplemental
restraint system, it is possible the SRS may fail to operate
when required. Before servicing (including removal or
installation of parts, inspection or replacement), be sure
to read the following items carefully, then follow the cor-
rect procedure described in this manual.
(b) GENERAL NOTICE
(1) Malfunction symptoms of the supplemental re-
straint system are difficult to confirm, so the diag-
nostic trouble codes become the most important
source of information when troubleshooting. When
troubleshooting the supplemental restraint system,
always inspect the diagnostic trouble codes before
disconnecting the battery (See page DI±1118).
(2) Work must be started after 90 seconds from the
time the ignition switch is turned to the ºLOCKº posi-
tion and the negative (±) terminal cable is discon-
nected from the battery.
(The supplemental restraint system is equipped
with a back±up power source because if work is
started within 90 seconds of disconnecting the neg-
ative (±) terminal cable from the battery, the SRS
may deploy.)
When the negative (±) terminal cable is discon-
nected from the battery, memory of the clock and
audio systems will be cancelled. So before starting
work, make a record of the contents memorized in
each memory system. When work is finished, reset
the clock and audio systems as before. To avoid
erasing the memory of each memory system, never
use a back±up power supply from another battery.

IN±10
± INTRODUCTIONFOR ALL OF VEHICLES
10 Author: Date:
2005 SEQUOIA (RM1146U)
(3) Even in case of a minor collision where the SRS
does not deploy, the steering wheel pad, the pas-
senger airbag assembly, side airbag assembly, cur-
tain shield airbag assembly, seat belt pretensioner,
airbag sensor assembly, front airbag sensor, side
airbag sensor assembly and curtain shield airbag
sensor assembly should be inspected.
Parts of referenceSee page
Steering wheel padSee page RS±22
Passenger side airbag assemblySee page RS±35
Side airbag assembly
Power adjuster type
Manual adjuster type
See page RS±49
See page RS±64
Curtain shield airbag assemblySee page RS±72
Seat belt pretensionerSee page BO±165
Airbag sensor assemblySee page RS±83
Front airbag sensor assemblySee page RS±88
Side airbag sensor assemblySee page RS±93
Curtain shield airbag sensor assemblySee page RS±98
(4) Never use SRS parts from another vehicle. When
replacing parts, replace them with new ones.
(5) Before repairs, remove the airbag sensor because
shocks are likely to be applied to the sensor during
repairs.
(6) Never disassemble or repair the steering wheel
pad, front passenger airbag assembly, airbag sen-
sor assembly and front airbag sensor.
(7) If the steering wheel pad, front passenger airbag
assembly, side airbag assembly, curtain shield air-
bag assembly, seat belt pretensioner, airbag sensor
assembly and front airbag sensor have been
dropped, or if there are cracks, dents or other de-
fects in the case, bracket or connector, replace
them with new ones.
(8) Do not expose the steering wheel pad, front pas-
senger airbag assembly, side airbag assembly, cur-
tain shield airbag assembly, seat belt pretensioner,
airbag sensor assembly and front airbag sensor di-
rectly to hot air or flames.
(9) Use a volt/ohmmeter with high impedance (10 kW/V
minimum) for troubleshooting of the electrical cir-
cuit.
(10) Information labels are attached to the periphery of
the SRS components. Follow the instructions on the
notices.
(11) After work on the supplemental restraint system is
completed, check the SRS warning light (See page
DI±1118).

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± INTRODUCTIONFOR ALL OF VEHICLES
12 Author: Date:
2005 SEQUOIA (RM1146U)
(d) STEERING WHEEL PAD (with Airbag)
(1) When removing the steering wheel pad or handling
a new steering wheel pad, it should be placed with
the pad top surface facing up.
Storing the pad with its metallic surface upward may
lead to a serious accident if the airbag inflates for
some reason. In addition do not store a steering
wheel pad on top of another one.
(2) Never measure the resistance of the airbag squib.
(This may cause the airbag to deploy, which is very
dangerous.)
(3) Grease should not be applied to the steering wheel
pad and the pad should not be cleaned with any
kind of detergents.
(4) Store the steering wheel pad where the ambient
temperature remains below 93°C (200°F), without
high humidity and away from electrical noise.
(5) When using electric welding, first disconnect the air-
bag connector (yellow color and 2 pins) under the
steering column near the combination switch con-
nector before starting work.
(6) When disposing of a vehicle or the steering wheel
pad alone, the airbag should be deployed using an
SST before disposal (See page RS±23).
Carry out the operation in a safe place away from
electrical noise.

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± INTRODUCTIONFOR ALL OF VEHICLES
IN±13
13 Author: Date:
2005 SEQUOIA (RM1146U)
(e) FRONT PASSENGER AIRBAG ASSEMBLY
(1) Always store a removed or new front passenger air-
bag assembly with the airbag deployment side fac-
ing up.
Storing the airbag assembly with the airbag deploy-
ment side facing down could cause a serious acci-
dent if the airbag deploys.
(2) Never measure the resistance of the airbag squib
(This may cause the airbag to deploy, which is very
dangerous.).
(3) Grease should not be applied to the front passen-
ger airbag assembly and the airbag door should not
be cleaned with any kind of detergents.
(4) Store the airbag assembly where the ambient tem-
perature remains below 93°C (200°F), without high
humidity and away from electrical noise.
(5) When using electric welding, first disconnect the air-
bag connector (yellow color and 2 pins) installed on
assembly before starting work.
(6) When disposing of a vehicle or the airbag assembly
alone, the airbag should be deployed using an SST
before disposal (See page RS±36).
Perform the operation in a safe place away from
electrical noise.

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± INTRODUCTIONFOR ALL OF VEHICLES
14 Author: Date:
2005 SEQUOIA (RM1146U)
(f) SIDE AIRBAG ASSEMBLY
(1) Always store a removed or new side airbag assem-
bly with the airbag deployment side facing up.
Storing the airbag assembly with the airbag deploy-
ment side facing down could cause a serious acci-
dent if the airbag inflates.
(2) Never measure the resistance of the airbag squib
(This may cause the airbag to deploy, which is very
dangerous.).
(3) Grease should not be attached to the side airbag
assembly and the surface should not be cleaned
with any kind of detergents.
(4) Store the airbag assembly where the ambient tem-
perature remains below 93°C (200°F), without high
humidity and away from electrical noise.
(5) When using electric welding, first disconnect the air-
bag connector (yellow color and 2 pins) under the
seat before starting work.
(6) When disposing of a vehicle or the side airbag as-
sembly alone, the airbag should be deployed using
an SST before disposal (See page RS±50 or
RS±65).
Perform the operation in a safe place away from
electrical noise.

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± INTRODUCTIONFOR ALL OF VEHICLES
IN±15
15 Author: Date:
2005 SEQUOIA (RM1146U)
(g) CURTAIN SHIELD AIRBAG ASSEMBLY
(1) Always store a removed or new curtain shield air-
bag assembly in a clear plastic bag, and keep it in
a safe place.
NOTICE:
Protection bag is not reused.
CAUTION:
Never disassemble the curtain shield airbag assembly
(2) Never measure the resistance of the airbag squib
(This may cause the airbag to deploy, which is very
dangerous.).
(3) Grease should not be attached to the curtain shield
airbag assembly and the surface should not be
cleaned with any kind of detergents.
(4) Store the airbag assembly where the ambient tem-
perature remains below 93°C (200°F), without high
humidity and away from electrical noise.
(5) When using electric welding, first disconnect the air-
bag connector (yellow color and 2 pins) into the
instrument panel before starting work.
(6) When disposing of a vehicle or the curtain shield air-
bag assembly alone, the airbag should be deployed
using an SST before disposal (See page RS±73).
Perform the operation in a safe place away from
electrical noise.

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± INTRODUCTIONFOR ALL OF VEHICLES
IN±17
17 Author: Date:
2005 SEQUOIA (RM1146U)
(i) AIRBAG SENSOR ASSEMBLY
(1) Never reuse the airbag sensor assembly involved
in a collision when the SRS has deployed.
(2) The connectors to the airbag sensor assembly
should be connected or disconnected with the sen-
sor mounted on the floor. If the connectors are con-
nected or disconnected while the airbag sensor as-
sembly is not mounted to the floor, it could cause
undesired ignition of the supplemental restraint sys-
tem.
(3) Work must be started after 90 seconds from the
time the ignition switch is turned to the ºLOCKº posi-
tion and the negative (±) terminal cable is discon-
nected from the battery, even if only loosening the
set bolts of the airbag sensor assembly.
(j) WIRE HARNESS AND CONNECTOR
The SRS wire harness is integrated with the cowl wire har-
ness assembly and floor wire harness assembly. All the
connectors for the system are also a standard yellow col-
or. If the SRS wire harness becomes disconnected or the
connector becomes broken due to an accident, etc., re-
pair or replace it.
2. FOR VEHICLES EQUIPPED WITH VEHICLE SKID
CONTROL (VSC) SYSTEM
NOTICE:

Even if TRAC is initially OFF, it automatically be-
comes ON when the vehicle speed becomes about 30
km/h (19 mh) or more. Therefore, please drive in the
test mode to avoid dangerous situations caused by
the TRAC control.

VSC/ABS may be failed when the vehicle is driven on
the two±wheel chassis dynamo. Therefore, after driv-
ing on the chassis dynamo, please clear DTC before
normal driving. Please refer to the page DI±899 for the
method of clearing DTC.

Fasten the vehicle with the lock chain.
(a) Confirm VSC system is OFF.
(1) Turn the ignition switch OFF.
(2) Using SST, connect terminals Ts and CG of DLC3.
SST 09843±18040
(3) Start the engine.

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Drive Shaft Boots
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Dust Cover
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A/T
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Add if coolAdd if hot
± MAINTENANCECHASSIS
MA±7
54 Author: Date:
2005 SEQUOIA (RM1146U)
CHASSIS
INSPECTION
1. INSPECT STEERING LINKAGE
(a) Check the steering wheel free play (See page SR±9).
(b) Check the steering linkage for looseness or damage.
Check that:

Tie rod ends do not have excessive play.

Dust seals are not damaged.

Boot clamps are not loose.
2. INSPECT SRS AIRBAG (See page RS±3)
3. INSPECT STEERING GEAR HOUSING OIL
Check the steering gear housing for oil leaks.
If leakage is found, check the cause and repair.
4. 4WD:
INSPECT DRIVE SHAFT BOOTS
Inspect the drive shaft boots for clamp looseness, grease leak-
age or damage.
5. INSPECT BALL JOINTS AND DUST COVERS
(a) Inspect the ball joints for excessive looseness.
(b) Inspect the dust cover for damage.
6. 2WD:
CHECK OIL LEVEL IN AUTOMATIC TRANSMISSION
AND DIFFERENTIAL
(a) Automatic transmission:
Check that the fluid level is in the ºHOTº range at the nor-
mal operating temperature (70 ± 80°C or 158 ± 176°F)
and add as necessary.
NOTICE:
Do not overfill.
Transmission fluid (A/T): See page
DI±524

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± PREPARATIONSUPPLEMENTAL RESTRAINT SYSTEM
126 Author: Date:
2005 SEQUOIA (RM1146U)
SUPPLEMENTAL RESTRAINT SYSTEM
SST (Special Service Tools)
09082±00700SRS Airbag Deployment Tool
09082±00750Airbag Deployment Wire
Sub±harness No.3
09082±00780Airbag Deployment Wire
Sub±Harness No.6
09082±00802Airbag Deployment Wire
Sub±Harness No.8
(09082±10801)Wire A
(09082±20801)Wire B
(09082±30801)Wire C

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± PREPARATIONSUPPLEMENTAL RESTRAINT SYSTEM
128 Author: Date:
2005 SEQUOIA (RM1146U)
EQUIPMENT
Torque wrench
Bolt:
Length: 35 mm (1.387 in.)
Pitch: 1.0 mm (0.039 in.)
Diam.: 6.0 mm (0.236 in.)
Airbag disposal
Tire
Width: 185 mm (7.28 in.)
Inner diam.: 360mm (14.17 in.)
Airbag disposal
Tire with disc wheel
Width: 185 mm (7.28 in.)
Inner diam.: 360 mm (14.17 in.)
Airbag disposal
Plastic bagAirbag disposal