service indicator TOYOTA SEQUOIA 2001 Service Repair Manual

Illustration:
what to do and where to do
21. CHECK PISTON STROKE OF OVERDRIVE BRAKE
(a)
Task heading : what to do
SST 09350±30020 (09350±06120)
Set part No. Component part No.
Detailed text : how to do task
(b)
Piston stroke: 1.40 1.70 mm (0.0551 0.0669 in.)
Specification
Place SST and a dial indicator onto the overdrive brake pis-
ton as shown in the illustration.
Measure the stroke applying and releasing the compressed
air (392 785 kPa, 4 8 kgf/cm
2 or 57 114 psi) as shown
in the illustration. IN±2
± INTRODUCTIONHOW TO USE THIS MANUAL
2 Author: Date:
2005 SEQUOIA (RM1146U)
The procedures are presented in a step±by±step format:

The illustration shows what to do and where to do.

The task heading tells what to do.

The detailed text tells how to perform the task and gives other information such as specifications
and warnings.
Example:
This format provides the experienced technician with a FAST TRACK to the information needed. The upper
case task heading can be read at a glance when necessary, and the text below it provides detailed informa-
tion. Important specifications and warnings always stand out in bold type.
6. REFERENCES
References have been kept to a minimum. However, when they are required, you are given the page to refer
to.
7. SPECIFICATIONS
Specifications are presented in bold type throughout the text where needed. You never have to leave the
procedure to look up your specifications. They are also found in Service Specifications section for quick ref-
erence.
8. CAUTIONS, NOTICES, HINTS:

CAUTIONS are presented in bold type, and indicate there is a possibility of injury to you or other
people.

NOTICES are also presented in bold type, and indicate the possibility of damage to the components
being repaired.

HINTS are separated from the text but do not appear in bold. They provide additional information to
help you perform the repair efficiently.
9. SI UNIT
The UNITS given in this manual are primarily expressed according to the SI UNIT (International System of
Unit), and alternately expressed in the metric system and in the English System.
Example:
Torque: 30 N´m (310 kgf´cm, 22 ft´lbf)

IN±46
± INTRODUCTIONTERMS
46 Author: Date:
2005 SEQUOIA (RM1146U) IAC
Idle Air ControlIdle Speed Control (ISC)
IATIntake Air TemperatureIntake or Inlet Air Temperature
ICMIgnition Control Module±
IFIIndirect Fuel InjectionIndirect Injection (IDL)
IFSInertia Fuel±Shutoff±
ISCIdle Speed Control±
KSKnock SensorKnock Sensor
MAFMass AirflowAir Flow Meter
MAPManifold Absolute PressureManifold Pressure Intake Vacuum
MCMixture Control
Electric Bleed Air Control Valve (EBCV)
Mixture Control Valve (MCV)
Electric Air Control Valve (EACV)
MDPManifold Differential Pressure±
MFIMultiport Fuel InjectionElectronic Fuel Injection (EFI)
MILMalfunction Indicator LampCheck Engine Lamp
MSTManifold Surface Temperature±
MVZManifold Vacuum Zone±
NVRAMNon±Volatile Random Access Memory±
O2SOxygen SensorOxygen Sensor, O2 Sensor (O2S)
OBDOn±Board DiagnosticOn±Board Diagnostic System (OBD)
OCOxidation Catalytic ConverterOxidation Catalyst Convert (OC), CCo
OLOpen LoopOpen Loop
PAIRPulsed Secondary Air InjectionAir Suction (AS)
PCMPowertrain Control Module±
PNPPark/Neutral Position±
PROMProgrammable Read Only Memory±
PSPPower Steering Pressure±
PTOXPeriodic Trap OxidizerDiesel Particulate Filter (DPF)
Diesel Particulate Trap (DPT)
RAMRandom Access MemoryRandom Access Memory (RAM)
RMRelay Module±
ROMRead Only MemoryRead Only Memory (ROM)
RPMEngine SpeedEngine Speed
SCSuperchargerSupercharger
SCBSupercharger BypassE±ABV
SFISequential Multiport Fuel InjectionElectronic Fuel Injection (EFI), Sequential Injection
SPLSmoke Puff Limiter±
SRIService Reminder Indicator±
SRTSystem Readiness Test±
STScan Tool±
TBThrottle BodyThrottle Body
TBIThrottle Body Fuel InjectionSingle Point Injection
Central Fuel Injection (Ci)
TCTurbochargerTurbocharger
TCCTorque Converter ClutchTorque Converter
TCMTransmission Control ModuleTransmission ECU, ECT ECU

RS0B6±09
± SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS±1
3284 Author: Date:
2005 SEQUOIA (RM1146U)
SRS AIRBAG
PRECAUTION
CAUTION:

The vehicle is equipped with SRS, which consists of a driver airbag, front passenger airbag,
side airbag and curtain shield airbag. Failure to carry out service operations in the correct se-
quence 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 installa-
tion of parts, inspection or replacement), be sure to read the following items carefully, then fol-
low the correct procedures indicated in the repair manual.

Wait at least 90 seconds after the ignition switch is turned to the ºLOCKº position and the nega-
tive (±) 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
after 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 airbag sen-
sor assembly, curtain shield airbag sensor assembly, seat position sensor assembly or occu-
pant classification ECU directly to hot air or flames.

Be sure to perform the initialization of the occupant classification ECU if any of the following
conditions occur (see page DI±1128). If the initialization is not performed, the SRS may not oper-
ate properly.

The occupant classification ECU is replaced.

Accessories (seatback tray, seat cover, etc.) are installed to the vehicle.

The passenger seat is removed from the vehicle, and then reinstalled or replaced.

The passenger airbag ON/OFF indicator light (ºOFFº) comes on when the passenger seat
is not occupied.

The vehicle is brought to the workshop for repair due to an accident or collision.
NOTICE:

Malfunction symptoms of the SRS are difficult to confirm, so DTCs are the most important
source of information when troubleshooting. When troubleshooting the SRS, always inspect
DTCs before disconnecting the battery.

Even in the case of a minor collision when 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 airbag sensor assembly, curtain shield airbag sen-
sor assembly, seat position sensor assembly and occupant classification ECU should be in-
spected. (see page RS±22, RS±35, RS±49, RS±64, RS±72, RS±83, RS±88, RS±93, RS±98,
RS±106 and RS±112).

Before repair work, remove the airbag sensor if any kind of shock is likely to occur to the airbag
sensor during the operation.

Never use SRS parts from another vehicle. When replacing the parts, replace them with new
ones.

Never disassemble or repair the steering wheel pad, front passenger airbag assembly, side air-
bag assembly, curtain shield airbag assembly, airbag sensor assembly, front airbag sensor,
side airbag sensor assembly, curtain shield airbag sensor assembly, seat position sensor as-
sembly or occupant classification ECU in order to reuse it.

05_SEQUOIA_U (L/O 0408)
8
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
1. Service reminder indicators and
indicator lights
2. Oil pressure gauge
3. Tachometer4. Speedometer
5. Fuel gauge
6. Engine coolant temperature gauge7. Trip meter reset knob
8. Odometer and two trip meters
9. Height control indicator lights
10. Volt meter
Instrument cluster overview

Ty p e A

05_SEQUOIA_U (L/O 0408)
9
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
1. Service reminder indicators and
indicator lights
2. Oil pressure gauge
3. Tachometer4. Speedometer
5. Fuel gauge
6. Engine coolant temperature gauge7. Trip meter reset knob
8. Odometer and two trip meters
9. Height control indicator lights
10. Volt meter
Ty p e B

05_SEQUOIA_U (L/O 0408)
12
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
Cruise control indicator light*
4
*
1
: For details, see ªService reminder indicators and warning
buzzersº on page 162 in Section 1±6.
*
2: If this light flashes, see ªFour±wheel drive systemº on page
177 in Section 1±7.
*
3: If this light flashes, see ªRear height control air suspensionº
on page 189 in Section 1±7.
*
4: If this light flashes, see ªCruise controlº on page 205 in
Section 1±7.
Manual control mode indicator light*
3
Height control indicator lights

05_SEQUOIA_U (L/O 0408)
86
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
This warning light system monitors the
airbag sensor assembly, front airbag sen-
sors, side and curtain shield airbag sen-
sors, curtain shield airbag sensors, driv-
er 's seat position sensor, driver 's seat belt
buckle switch, front passenger occupant
classification system and indicator light,
front passenger 's seat belt buckle switch,
seat belt pretensioner assemblies, inflat-
ors, warning light, ªRSCA OFFº indicator
light, interconnecting wiring and power
sources. (For details, see ªService remind-
er indicators and warning buzzersº on
page 162 in Section 1±6.)
If any of the following conditions occurs,
this indicates a malfunction of the airbags
or seat belt pretensioners. Contact your
Toyota dealer as soon as possible.

The light does not come on when the
ignition key is turned to the ªONº posi-
tion or remains on for more than 6
seconds.

The light comes on while driving.

If any seat belt does not retract or can
not be pulled out due to a malfunction
or activation of the relevant seat belt
pretensioner.

The seat belt pretensioner assembly or
surrounding area has been damaged.
In the following cases, contact your Toyota
dealer as soon as possible:

The front of the vehicle (shaded in the
illustration) was involved in an accident
that was not severe enough to cause
the seat belt pretensioners to operate.

Either seat belt pretensioner assembly
or surrounding area is scratched,
cracked, or otherwise damaged.
The SRS (Supplemental Restraint Sys-
tem) front airbags are designed to pro-
vide further protection for the driver
and front passenger in addition to the
primary safety protection provided by
the seat belts.
In response to a severe frontal impact,
the SRS front airbags work together with
the seat belts to help reduce injury by
inflating. The SRS front airbags help re-
duce injuries mainly to the driver's or front
passenger 's head or chest caused by hit-
ting the vehicle interior.
SRS driver airbag and front
passenger airbag

05_SEQUOIA_U (L/O 0408)
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2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
This indicator comes on when the igni-
tion key is turned to the ªONº position.
It goes off after about 6 seconds. This
means the SRS front airbags are oper-
ating properly.This warning light system monitors the
airbag sensor assembly, front airbag sen-
sors, side and curtain shield airbag sen-
sors, curtain shield airbag sensors, driv-
er 's seat position sensor, driver 's seat belt
buckle switch, front passenger occupant
classification system and indicator light,
front passenger 's seat belt buckle switch,
seat belt pretensioner assemblies, inflat-
ors, warning light, ªRSCA OFFº indicator
light, interconnecting wiring and power
sources. (For details, see ªService remind-
er indicators and warning buzzersº on
page 162 in Section 1±6.)
If either of the following conditions occurs,
this indicates a malfunction of the airbags
or seat belt pretensioners. Contact your
Toyota dealer as soon as possible.7

The light does not come on when the
ignition key is turned to the ªONº posi-
tion or remains on for more than 6
seconds.

The light comes on while driving.
The SRS warning light will come on and
front passenger occupant classification in-
dicator light will indicate ªOFFº if there is
a malfunction in the front passenger occu-
pant classification system.
In the following cases, contact your Toyota
dealer as soon as possible:

The SRS front airbags have been in-
flated.

The front of the vehicle (shaded in the
illustration) was involved in an accident
that was not severe enough to cause
the SRS front airbags to inflate.

The pad section of the steering wheel
or front passenger airbag cover
(shaded in the illustration) is scratched,
cracked, or otherwise damaged.

05_SEQUOIA_U (L/O 0408)
101
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
NOTICE
Do not perform any of the following
changes without consulting your
Toyota dealer. Such changes can
interfere with proper operation of the
SRS side airbag and curtain shield
airbag system in some cases.

Installation of electronic devices
such as a mobile two±way radio,
cassette tape player or compact
disc player

Modification of the side structure of
the passenger compartment

Repairs made on or near the con-
sole or front seat
This indicator comes on when the igni-
tion key is turned to the ªONº position.
It goes off after about 6 seconds. This
means the SRS side airbags and curtain
shield airbags are operating properly.This warning light system monitors the
airbag sensor assembly, front airbag sen-
sors, side and curtain shield airbag sen-
sors, curtain shield airbag sensors, driv-
er 's seat position sensor, driver 's seat belt
buckle switch, front passenger occupant
classification system and indicator light,
front passenger 's seat belt buckle switch,
seat belt pretensioner assemblies, inflat-
ors, warning light, ªRSCA OFFº indicator
light, interconnecting wiring and power
sources. (For details, see ªService remind-
er indicators and warning buzzersº on
page 162 in Section 1±6.)
If either of the following conditions occurs,
this indicates a malfunction of the airbags
or seat belt pretensioners. Contact your
Toyota dealer as soon as possible.

The light does not come on when the
ignition key is turned to the ªONº posi-
tion or remains on for more than 6
seconds.

The light comes on while driving.
The SRS warning light will come on and
front passenger occupant classification in-
dicator light will indicate ªOFFº if there is
a malfunction in the front passenger occu-
pant classification system.

05_SEQUOIA_U (L/O 0408)
157
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
OPERATION OF INSTRUMENTS AND
CONTROLS
Gauges, Meters and Service reminder indicators
Fuel gauge158 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine coolant temperature gauge158 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil pressure gauge159 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vo ltme te r160 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tachometer160 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Odometer and two trip meters160 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service reminder indicators and warning buzzers162 . . . . . . . . . . . . . .
SECTION 1± 6