2001 TOYOTA SEQUOIA Back Seat

IN0IG±04
BO4111
Negative Cable
± 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.

IN01T±18
± INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMSIN±23
23 Author: Date:
HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS
GENERAL INFORMATION
A large number of ECU controlled systems are used in the SEQUOIA. In general, the ECU controlled system
is considered to be a very intricate system requiring a high level of technical knowledge and expert skill to
troubleshoot. However, the fact is that if you proceed to inspect the circuits one by one, troubleshooting of
these systems is not complex. If you have adequate understanding of the system and a basic knowledge
of electricity, accurate diagnosis and necessary repair can be performed to locate and fix the problem. This
manual is designed through emphasis of the above standpoint to help service technicians perform accurate
and effective troubleshooting, and is compiled for the following major ECU controlled systems:
The troubleshooting procedure and how to make use of it are described on the following pages.
SystemPage
1. EngineDI±1
2. Automatic TransmissionDI±515
3. Air Suspension Control SystemDI±695
4. Tire Pressure Warning SystemDI±796
5. ABS with EBD & BA & TRAC & VSC SystemDI±891
6. Can Communication SystemDI±1060
7. Supplemental Restraint SystemDI±1118
8. Power Seat Control System w/ Driving Position MemoryDI±1501
9. Cruise Control SystemDI±1536
10.Engine Immobilizer SystemDI±1570
11. Combination Meter SystemDI±1601
12.Sliding Roof SystemDI±1661
13.Body Control SystemDI±1678
14.Driver Door Control SystemDI±1778
15.Passenger Door Control SystemDI±1814
16.Back Door Control SystemDI±1850
17.Multiplex Communication SystemDI±1887
18.Audio SystemDI±1955
19.Rear Seat Audio SystemDI±2044
20.Rear Seat Entertainment SystemDI±2078
21.Navigation SystemDI±2159
22.Air Conditioning SystemDI±2297
FOR USING OBD II SCAN TOOL OR TOYOTA HAND±HELD TESTER

Before using the scan tool or tester, the scan tool's instruction book or tester's operator manual should
be read thoroughly.

If the scan tool or tester cannot communicate with ECU controlled systems when you have connected
the cable of the scan tool or tester to DLC3, turned the ignition switch ON and operated the scan tool,
there is a problem on the vehicle side or tool side.
(1) If communication is normal when the tool is connected to another vehicle, inspect the diagnosis
data link line (Bus
line) or ECU power circuit of the vehicle.
(2) If communication is still not possible when the tool is connected to another vehicle, the problem
is probably in the tool itself, so perform the Self Test procedures outline in the Tester Operator's
Manual.

IN±26± INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
26 Author: Date:
2005 SEQUOIA (RM1146U)
2. SYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE CHECK
The diagnostic system in the SEQUOIA fulfills various functions. The first function is the Diagnostic Trouble
Code Check in which a malfunction in the signal circuits to the ECU is stored in code in the ECU memory
at the time of occurrence, to be output by the technician during troubleshooting. Another function is the Input
Signal Check which checks if the signals from various switches are sent to the ECU correctly.
By using these check functions, the problem areas can be narrowed down quickly and troubleshooting can
be performed effectively. Diagnostic functions are incorporated in the following systems in the SEQUOIA.
SystemDiagnostic Trouble
Code CheckInput Signal Check
(Sensor Check)Diagnostic Test
Mode (Active Test)
1. Engine(with Check
Mode)
2. Automatic Transmission(with Check
Mode)
3. Air Suspension Control System(with Check
Mode)
4. Tire Pressure Warning System
5. ABS with EBD & BA & TRAC & VSC System
6. Can Communication System
7. Supplemental Restraint System(with Check
Mode)
8. Power Seat Control System w/ Driving Position Memory
9. Cruise Control System
10.Engine Immobilizer System
11. Combination Meter System
12.Sliding Roof System
13.Body Control System
14.Driver Door Control System
15.Passenger Door Control System
16.Back Door Control System
17.Multiplex Communication System
18.Audio System
19.Rear Seat Audio System
20.Rear Seat Entertainment System
21.Air Conditioning System
In diagnostic trouble code check, it is very important to determine whether the problem indicated by the diag-
nostic trouble code is still occurring or occurred in the past but returned to normal at present. In addition,
it must be checked in the problem symptom check whether the malfunction indicated by the diagnostic
trouble code is directly related to the problem symptom or not. For this reason, the diagnostic trouble codes
should be checked before and after the symptom confirmation to determine the current conditions, as shown
in the table on the next page. If this is not done, it may, depending on the case, result in unnecessary trouble-
shooting for normally operating systems, thus making it more difficult to locate the problem, or in repairs not
pertinent to the problem. Therefore, always follow the procedure in correct order and perform the diagnostic
trouble code check.

MA002±35
MA±2
± MAINTENANCEINSIDE VEHICLE
49 Author: Date:
2005 SEQUOIA (RM1146U)
INSIDE VEHICLE
GENERAL MAINTENANCE
These are maintenance and inspection items which are considered to be the owner's responsibility.
They can be done by the owner or they can have them done at a service shop.
These items include those which should be checked on a daily basis, those which, in most cases, do not
require (special) tools and those which are considered to be reasonable for the owner to do.
Items and procedures for general maintenance are as follows.
1. GENERAL NOTES

Maintenance items may vary from country to country. Check the owner's manual supplement in which
the maintenance schedule is shown.

Every service item in the periodic maintenance schedule must be performed.

Periodic maintenance service must be performed according to whichever interval in the periodic main-
tenance schedule occurs first, the odometer reading (miles) or the time interval (months).

Maintenance service after the last period should be performed at the same interval as before unless
otherwise noted.

Failure to do even one item can cause the engine to run poorly and increase exhaust emissions.
2. LIGHTS
(a) Check that the headlights, stop lights, taillights, turn signal lights, and other lights are all working.
(b) Check the headlight aim.
3. WARNING LIGHTS AND BUZZERS
Check that all warning lights and buzzers function properly.
4. HORN
Check that it is working.
5. WINDSHIELD GLASS
Check for scratches, pits or abrasions.
6. WINDSHIELD WIPER AND WASHER
(a) Check operation of the wipers and washer.
(b) Check that the wipers do not streak.
7. WINDSHIELD DEFROSTER
Check that air comes out from the defroster outlet when operating the heater or air conditioner.
8. REAR VIEW MIRROR
Check that it is mounted securely.
9. SUN VISORS
Check that they move freely and are mounted securely.
10. STEERING WHEEL
Check that it has the specified free play. Be alert for changes in steering condition, such as hard steering,
excessive free play or strange noises.
11. SEATS
(a) Check that the seat adjusters operate smoothly.
(b) Check that all latches lock securely in any position.
(c) Check that the head restraints move up and down smoothly and that the locks hold securely in any
latch position.
(d) For fold±down seat backs, check that the latches lock securely.
12. SEAT BELTS
(a) Check that the seat belt system such as the buckles, retractors and anchors operate properly and
smoothly.
(b) Check that the belt webbing is not cut, frayed, worn or damaged.

B02100
± MAINTENANCECHASSIS
MA±11
58 Author: Date:
2005 SEQUOIA (RM1146U)

Leaf spring U±bolt mounting nuts
Torque: 133 N´m (1,350 kgf´cm, 98 ft´lbf )
(b) Under Severe Conditions:
In addition to the above maintenance items, check for
loose or missing bolts and nuts on the following.

Steering system

Drive train

Suspension system

Fuel tank mounts

Engine mounts, etc.
14. FINAL INSPECTION
(a) Check operation of body parts:

Hood:

Auxiliary catch operates properly

Hood locks securely when closed

Doors:

Door locks operate properly

Doors close properly

Seats:

Seat adjusts easily and locks securely in any
positions

Seat backs lock securely at any angle

Fold±down seat backs lock securely
(b) Road test:

Engine and chassis parts do not have abnormal
noises.

Vehicle does not wander or pull to one side.

Brakes work properly and do not drag.
(c) Be sure to deliver a clean vehicle and especially check:

Steering wheel

Shift lever knob

All switch knobs

Door handles

Seats

± SERVICE SPECIFICATIONSENGINE MECHANICAL
SS±5
147 Author: Date:
2005 SEQUOIA (RM1146U) Cylinder head
Warpage Maximum
Valve seat
Refacing angle
Contacting angle
Contacting width
Valve guide bushing bore diameter STD
O/S 0.05
Cylinder head bolt thread inside diameter STD
Minimum
Protrusion heightIntake
Exhaust0.10 mm (0.039 in.)
30°, 45°, 60°
45°
1.0 to 1.4 mm (0.039 to 0.055 in.)
10.285 to 10.306 mm (0.4049 to 0.4057 in.)
10.335 to 10.356 mm (0.4069 to 0.4077 in.)
9.810 to 9.960 mm (0.3862 to 0.3921 in.)
9.700 mm (0.3819 in.)
9.2 to 9.8 mm (0.362 to 0.386 in.)
8.2 to 8.8 mm (0.323 to 0.346 in.)
Valve guide
bushingInside diameter
Outside diameter (for repair part) STD
O/S 0.055.510 to 5.530 mm (0.2169 to 0.2374 in.)
10.333 to 10.344 mm (0.4068 to 0.4072 in.)
10.383 to 10.394 mm (0.4088 to 0.4092 in.)
ValveValve overall length STD Intake
Exhaust
Minimum Intake
Exhaust
Valve face angle
Stem diameterIntake
Exhaust
Stem oil clearance STD Intake
Exhaust
Maximum Intake
Exhaust
Margin thickness STD
Minimum95.05 mm (3.7421 in.)
95.10 mm (3.7441 in.)
94.55 mm (3.7224 in.)
94.60 mm (3.7244 in.)
44.5°
5.470 to 5.485 mm (0.2154 to 0.2159 in.)
5.465 to 5.480 mm (0.2152 to 0.2157 in.)
0.025 to 0.060 mm (0.0010 to 0.0024 in.)
0.030 to 0.065 mm (0.0012 to 0.0026 in.)
0.08 mm (0.0031 in.)
0.10 mm (0.0039 in.)
1.0 mm (0.039 in.)
0.5 mm (0.020 in.)
Valve springDeviation Maximum
Free length
Installed tension at 35.0 mm (1.378 in.)2.0 mm (0.079 in.)
54.1 mm (2.130 in.)
210 to 226 N (21.4 to 23.0 kgf, 47.2 to 50.7 lbf)
Valve lifterLifter diameter
Lifter bore diameter
Oil clearance STD
Maximum30.968 to 30.976 mm (1.2192 to 2.2195 in.)
31.000 to 31.016 mm (1.2205 to 1.2211 in.)
0.024 to 0.050 mm (0.0009 to 0.0020 in.)
0.07 mm (0.0028 in.)
CamshaftThrust clearance STD Intake
Exhaust
Maximum Intake
Exhaust
Journal oil clearance STD
Maximum
Timing tube journal oil clearance STD
Maximum
Journal diameter
Timing tube journal diameter STD
Circle runout
Cam lobe height STD Intake
Exhaust
Minimum Intake
Exhaust
Camshaft gear backlash STD
Maximum
Camshaft gear spring end free distance0 to 0.040 mm (0 to 0.0016 in.)
0.030 to 0.070 mm (0.0011 to 0.0028 in.)
0.12 mm (0.0047 in.)
0.10 mm (0.0039 in.)
0.030 to 0.071 mm (0.0012 to 0.0028 in.)
0.10 mm (0.0039 in.)
0.036 to 0.057 mm (0.0014 to 0.0022 in.)
0.075 mm (0.0030 in.)
26.954 to 26.970 mm (1.0612 to 1.0618 in.)
39.955 to 39.964 mm (1.5730 to 1.5734 in.)
0.03 mm (0.0012 in.)
42.61 to 42.71 mm (1.6776 to 1.6815 in.)
42.63 to 42.71 mm (1.6783 to 1.6823 in.)
42.46 mm (1.6717 in.)
42.48 mm (1.6724 in.)
0.020 to 0.200 mm (0.0008 to 0.0079 in.)
0.30 mm (0.0188 in.)
18.2 to 18.8 mm (0.712 to 0.740 in.)
ManifoldWarpageMaximum Exhaust0.10 mm (0.0039 in.)

SS061±77
SS±46
± SERVICE SPECIFICATIONSSUPPLEMENTAL RESTRAINT SYSTEM
188 Author: Date:
2005 SEQUOIA (RM1146U)
SUPPLEMENTAL RESTRAINT SYSTEM
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Steering wheel set nut5051037
Steering wheel pad set screw (Torx screw)8.89078 in.´lbf
Front passenger airbag assembly x Instrument panel5.05144 in.´lbf
Front passenger airbag assembly x Instrument panel reinforcement2020415
Front seat x Body3737727
Front seat inner belt x Front seat4142831
Seatback cover x Seatback frame5.55649 in.´lbf
Armrest x Seatback frame3737727
Cutain shield airbag assembly x Body9.81007
Airbag senaor assembly x Body17.517913
Front airbag sensor x Body17.517913
Side airbag sensor assembly x Body17.517913
Curtain shield airbag sensor assembly x Body17.517913
Seat position sensor assembly x Body8.08271 in.´lbf

± SERVICE SPECIFICATIONSBODY
SS±49
191 Author: Date:
2005 SEQUOIA (RM1146U) Power window regulator x Door panel
5.55649 in.´lbf
Back door lock x Door panel8.08271 in.´lbf
FRONT WIPER AND WASHER±±±
Wiper link x Body5.55649 in.´lbf
Wiper motor x Wiper link5.55649 in.´lbf
Wiper arm x Wiper link2020415
REAR WIPER AND WASHER±±±
Rear wiper motor x Body5.55649 in.´lbf
Wiper arm x Rear wiper motor5.55649 in.´lbf
BODY OUTSIDE MOULDING±±±
Rear bumper cover x Rear bumper extension5.05043 in.´lbf
WINDSHIELD±±±
Inner rear view mirror set torx screw2.52522 in.´lbf
SLIDING ROOF±±±
Sliding roof housing x Body5.55649 in.´lbf
INSTRUMENT PANEL±±±
Front passenger airbag assembly x Instrument panel5.05144 in.´lbf
Front passenger airbag assembly x Instrument panel reinforcement2020415
Steering wheel x Steering wheel pad8.89078 in.´lbf
Box panel sub±assembly x Floor panel4040830
FRONT SEAT (Power Adjuster Type)±±±
w/ Side airbag:
Seatback cover bracket x Seat frame assembly5.55649 in.´lbf
Armrest x Seat frame assembly3738027
Front seat x Body3738027
FRONT SEAT (Manual Adjuster Type)±±±
w/ Side airbag:
Seatback cover bracket x Seat frame assembly5.55649 in.´lbf
Armrest x Seat frame assembly3738027
Front seat x Body3738027
REAR NO.1 SEAT (Separate Type)±±±
Rear seat cushion hinge x Body3738027
LH rear seat lock x Seat cushion frame4344032
Rear seat reclining adjuster x Seat cushion frame4344032
Rear seat reclining adjuster x Seatback frame4344032
RH rear seat lock x Seat cushion frame6465347
REAR NO. 1 SEAT (Split Type LH)±±±
Rear seat cushion hinge x Body4344032
Rear No. 1 seat outer adjuster x Seat cushion frame4344032
Rear No. 1 seat outer adjuster x Seatback frame4344032
Rear No. 1 seat inner adjuster x Seat cushion frame4344032
Rear No. 1 seat inner adjuster x Seatback frame4243031
Rear seat shoulder belt guide x Seatback frame3738027
REAR NO.1 SEAT (Split Type RH)±±±
Rear seat cushion hinge x Body3738027
Rear seat lock x Seat cushion frame4344032