2001 TOYOTA SEQUOIA steering angle

± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±949
1143 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check for open and short circuit in harness and connector between steering
angle sensor and translate ECU (See page IN±35).
NG Repair or replace harness or connector.
OK
4 Check for open and short circuit in harness and connector between skid control
ECU and translate ECU (CAN1 circuit).
NG Repair or replace harness or connector
(CAN1 circuit).
OK
5 Is DTC still output?
Check DTC on page DI±911.
NO No problem.
YES

DI±950
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1144 Author: Date:
2005 SEQUOIA (RM1146U)
6 Replace the skid control ECU and check if trouble occurs again.
PREPARATION:
(a) Clear the DTC.
(b) Turn the ignition switch OFF.
CHECK:
Check if the same DTC still remains in the memory.
RESULT:
DTC is outputA
DTC is not outputB
B END.
A
Replace steering angle sensor.
NOTICE:

When replacing the skid control ECU, perform the zero point calibration (See page DI±897).

If the steering angle sensor has been replaced, drive the vehicle straight ahead at a speed of
6.5 mph (10.5 km/h) or more to calibrate the steering angle sensor.
7 Check DTC once more (See page DI±911).
PREPARATION:
(a) Clear the DTC.
(b) Turn the ignition switch OFF.
CHECK:
Check if the same DTC still remains in the memory.
RESULT:
DTC is outputA
DTC is not outputB
B END.
A
Replace skid control ECU with actuator
(See page BR±52).
NOTICE:
When replacing the skid control ECU, perform the zero point calibration (See page DI±897).

± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI±1013
1207 Author: Date:
2005 SEQUOIA (RM1146U)
DTC Normal Code Malfunction in Translate ECU
CIRCUIT DESCRIPTION
If any trouble occurs in the engine control system, the skid control ECU prohibits ABS & VSC control.
DTC No.DTC Detecting ConditionTrouble Area
Normal Code
Conditions 1., 2. or 3. continue for 5 sec. or more:
1. Engine malfunction signal is sent from ECM.
2. Shift malfunction signal is sent from ECM.
3. The shift position is other than P and N, and P range
input voltage is 8 V or more.

ECM circuit

ECM

Brake fluid level

Brake fluid level warning switch circuit

Steering angle sensor

Translate ECU

Skid control ECU

Vehicle CAN

VSC+, VSC± circuit (CAN1 communication system)
INSPECTION PROCEDURE
1 Is DTC output for ECM?
Check DTC on page DI±43.
YES Repair engine control system according to the
output code (See page DI±58).
NO
2 Check the DTC of the ABS and VSC (See page DI±911).
CHECK:
Check skid control ECU DTC.
RESULT:
Only DTC ºC1203/53º of the VSC system is outputA
Except DTC ºC1203/53º of the VSC system are outputB
B Repair ABS and VSC control system according
to the code output (See page DI±921).
A
DI6OF±12

DID9Q±01
± DIAGNOSTICSAUDIO SYSTEM
DI±1967
2161 Author: Date:
2005 SEQUOIA (RM1146U)
PROBLEM SYMPTOMS TABLE
NOTICE:
For the troubleshooting procedures of the audio system with a navigation system, refer to the navi-
gation system (See page DI±2184).
RADIO RECEIVER ASSY
HINT:
Inspect the ºFuseº and ºRelayº before confirming the suspected area as shown in the charts below.
SymptomSuspected AreaSee page
Pressing power switch does not start system.3. Power source circuit (radio receiver assy)
4. Radio receiver assyDI±1990
±
A audio system cannot be operated.1. Steering pad switch circuit
2. Radio receiver assyDI±1995
±
No sound cannot be heard (Separate type amplifier).
1. Power source circuit (stereo component amplifier assy)
2. Sound signal circuit
3. Speaker circuit
4. AVC±LAN circuit (radio receiver assy ± stereo compo-
nent amplifier)
5. AVC±LAN circuit (radio receiver assy ± rear seat audio
controller) w/ RSA system
6. AVC±LAN circuit (radio receiver assy ± multi±display
controller) w/ RSE system
7. Mute signal circuit
8. Stereo component amplifier assy
9. Radio receiver assyDI±1993
DI±2011
DI±2013
DI±2023
DI±2061
DI±2139
DI±2008
±
±
No sound cannot heard (Built±in type amplifier).
1. Power source circuit (radio receiver assy)
2. Speaker circuit
3. Radio receiver assyDI±1990
DI±2013
±
Sound quality is bad in all modes (volume is too low).
(Separate type amplifier)
1. Power source circuit (radio receiver assy)
2. Power source circuit (stereo component amplifier assy)
3. Speaker circuit
4. Sound signal circuit
5. Sound quality is bad in all modes (volume is too low)
6. Stereo component amplifier assyDI±1990
DI±1993
DI±2013
DI±2011
DI±2026
±
Sound quality is bad in all modes (volume is too low).
(Built±in type amplifier)1. Power source circuit (radio receiver assy)
2. Speaker circuit
3. Sound quality is bad in all modes (volume is too low)DI±1990
DI±2013
DI±2026
Noise occurs.±DI±2027
Radio broadcast cannot be received (bad reception).±DI±2028
CD cannot be inserted or is ejected right after insertion.1. Power source circuit (radio receiver assy)
2. CD cannot be inserted or is ejected right after insertionDI±1990
DI±2030
CD cannot be ejected.1. Power source circuit (radio receiver assy)
2. CD cannot be ejectedDI±1990
DI±2032
Sound quality is bad only when playing CD (volume is too low).±DI±2033
CD sound skips.±DI±2034
Cassette tape cannot be inserted or played.1. Power source circuit (radio receiver assy)
2. Cassette tape cannot be inserted or playedDI±1990
DI±2036
Cassette tape cannot be ejected.1. Power source circuit (radio receiver assy)
2. Cassette tape cannot be ejectedDI±1990
DI±2038
Sound quality is bad only when playing tape.±DI±2040
Tape is tangled due to incorrect tape speed or auto±reverse mal-
function.±DI±2042

SA28F±08
START
Preliminary Check
Tire pressure
Vehicle height
Brake dragging ROAD TEST
Does the vehicle lead/pull?
Cross switch front tire & wheel
assemblies (left & right).
Does the vehicle lead/pull in the
same direction as before?
Check front wheel alignment.
Is it within specification?
Adjust front wheel alignment.Reverse the front left side
tire and rebalance it.
Does the vehicle
lead/pull to the left?
COMPLETE
Are the tires uni±directional type?
Choose the position of front tire & wheel
assemblies where there is the least amount of pull.
Increase left front camber and decrease
right front camber until lead/pull is eliminated.Increase right front camber and decrease
left front camber until lead/pull is eliminated.
NO
YES
YES
NO
YES
YES
NO
YES
NO COMPLETE
NONOYES NOIs there steering
off center?
Adjust front tie rods.
NO
YES
Is the lead/pull stronger
than before?
YES
NOTICE : Do not exceed 1° of cross camber.
Do not exceed adjustment range.
Select a flat road where the vehicle can be driven in a straight line for 100 meters at a constant speed
of 35mph. Please confirm safety and set the steering wheel to its straight position. Drive the vehicle in
a straight line for 100 meters at a constant speed of 35mph without holding the steering wheel.
(1) The vehicle can keep straight but the steering wheel has some angle.
STEERING OFF CENTER (See page SR±10)
(2) The vehicle cannot keep straight.
STEERING PULL
YES NO
YES ROAD TEST
Does the vehicle still lead/pull?
NO ROAD TEST
Does the vehicle still lead/pull? ROAD TEST
Does the vehicle still lead/pull?
ROAD TEST
Does the vehicle still lead/pull?NO
Contact your local retail tire distributor.YES
*
*
SA±2
± SUSPENSION AND AXLETROUBLESHOOTING
2998 Author: Date:
2005 SEQUOIA (RM1146U)
REPAIR PROCEDURES
HINT:
This is a flow chart for vehicle pull.

F01718F05219F14317
Front:
Rear:A
B
C
DSA23H±05
SA±4
± SUSPENSION AND AXLEFRONT WHEEL ALIGNMENT
3000 Author: Date:
2005 SEQUOIA (RM1146U)
FRONT WHEEL ALIGNMENT
INSPECTION
NOTICE:
Be sure to perform the zero point calibration of the steering
angle, master cylinder pressure, yaw rate and deceleration
sensors (See page DI±897).
1. MEASURE VEHICLE HEIGHT
Measuring points:
A: Ground clearance of the front drive shaft center
B: Ground clearance of the front adjusting cam bolt center
C: Ground clearance of the rear axle shaft center
D: Ground clearance of the rear lower control arm front bolt cen-
ter
Vehicle height (Except air suspension models):
UCK35L±GKBSKA
Tire size: P245/70R16
Front
Rear
Tire size: P265/70R16 and P265/65R17
Front
Rear
A ± B: 69.7 mm (2.74 in.)
C ± D: 76.2 mm (3.00 in.)
A ± B: 69.5 mm (2.74 in.)
C ± D: 75.5 mm (2.97 in.)
UCK35L±GKBLKA
Front
Rear
A ± B: 71.6 mm (2.82 in.)
C ± D: 77.3 mm (3.04 in.)
UCK45L±GKBSKA
Front
Rear
A ± B: 61.6 mm (2.43 in.)
C ± D: 63.8 mm (2.51 in.)
UCK45L±GKBLKA
Front
Rear
A ± B: 62.8 mm (2.47 in.)
C ± D: 65.2 mm (2.57 in.)
Vehicle height (Air suspension models):
UCK35L±GKBSKA
Tire size: P245/70R16
Front
Rear
Tire size: P265/70R16 and P265/65R17
Front
Rear
A ± B: 68.5 mm (2.69 in.)
C ± D: 74.8 ± 104.8 mm (2.94 ± 4.13 in.)
A ± B: 68.3 mm (2.69 in.)
C ± D: 74.1 ± 104.1 mm (2.92 ± 4.10 in.)
UCK35L±GKBLKA
Front
Rear
A ± B: 70.3 mm (2.77 in.)
C ± D: 74.6 ± 104.6 mm (2.94 ± 4.12 in.)
UCK45L±GKBSKA
Front
Rear
A ± B: 60.5 mm (2.38 in.)
C ± D: 61.0 ± 91.0 mm (2.40 ± 3.58 in.)
UCK45L±GKBLKA
Front
Rear
A ± B: 61.8 mm (2.43 in.)
C ± D: 61.3 ± 91.3 mm (2.41 ± 3.59 in.)
NOTICE:
Before inspecting the wheel alignment, adjust the vehicle
height to the specified value.

SA3213
AB
Front
C D
R13228
R13229
FA0018
AB
FrontA
B
A: Inside
B: Outside
± SUSPENSION AND AXLEFRONT WHEEL ALIGNMENT
SA±9
3005 Author: Date:
2005 SEQUOIA (RM1146U)
5. INSPECT TOE±IN
Toe±in (total):
UCK35L±GKBSKA
Tire size: P245/70R16
Tire size: P265/70R16 and P265/65R17
Tire size: P265/65R17 (*1)
UCK35L±GKBLKA
UCK45L±GKBSKA
Tire size: P265/70R16 (*1)
UCK45L±GKBLKA
A + B: 0°05' ± 0°09' (0.09° ± 0.15°)
C ± D: 1.19 ± 2 mm (0.05 ± 0.08 in.)
A + B: 0°05' ± 0°09' (0.09° ± 0.15°)
C ± D: 1.29 ± 2 mm (0.05 ± 0.08 in.)
A + B: 0°05' ± 0°09' (0.09° ± 0.15°)
C ± D: 1.28 ± 2 mm (0.05 ± 0.08 in.)
A + B: 0°05' ± 0°09' (0.08° ± 0.15°)
C ± D: 1.15 ± 2 mm (0.05 ± 0.08 in.)
A + B: 0°05' ± 0°09' (0.08° ± 0.15°)
C ± D: 1.08 ± 2 mm (0.04 ± 0.08 in.)
A + B: 0°05' ± 0°09' (0.08° ± 0.15°)
C ± D: 1.07 ± 2 mm (0.04 ± 0.08 in.)
A + B: 0°04' ± 0°09' (0.07° ± 0.15°)
C ± D: 0.99 ± 2 mm (0.04 ± 0.08 in.)
(*1): Air suspension models only
If the toe±in is not within the specified values, adjust the rack
ends.
6. ADJUST TOE±IN AND WHEEL ANGLE
(a) Remove the 2 clips.
(b) Loosen the tie rod end lock nuts.
(c) Turn the right and left rack ends by an equal amount to
adjust the toe±in.
HINT:
Try to adjust the toe±in to the center of the specified values.
(d) Make sure that the lengths of the right and left rack ends
are the same.
Rack end length difference: 1.5 mm (0.059 in.) or less
(e) Tighten the tie rod end lock nuts.
Torque: 55 N´m (560 kgf´cm, 41 ft´lbf)
(f) Place the boots on the seats and install the clips.
HINT:
Make sure that the boots are not twisted.
(g) Inspect the wheel angle.
Turn the steering wheel fully and measure the turning
angle.

SA23J±05
SA±28
± SUSPENSION AND AXLEFRONT AXLE HUB
3024 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
1. INSTALL STEERING KNUCKLE
(a) 4WD:
Insert the drive shaft into the axle hub and temporarily tighten the nut.
NOTICE:
Be careful not to damage the oil seal and drive shaft boot.
(b) Connect the steering knuckle to the upper suspension arm.
(c) Install the nut and a new cotter pin.
If the holes for the cotter pin are not aligned, tighten the nut further up to 60°.
Torque: 105 N´m (1,100 kgf´cm, 77 ft´lbf)
2. CONNECT LOWER BALL JOINT
Connect the lower ball joint to the steering knuckle with the 4 bolts.
Torque: 65 N´m (663 kgf´cm, 48 ft´lbf)
3. INSTALL SHOCK ABSORBER (See page SA±70)
4. INSTALL BRAKE CALIPER
(a) Install the disc, brake caliper and 2 bolts.
Torque: 123 N´m (1,250 kgf´cm, 90 ft´lbf)
(b) Install the brake line clamp to the steering knuckle with the bolt.
Torque: 28 N´m (285 kgf´cm, 21 ft´lbf)
5. CONNECT SPEED SENSOR AND WIRE HARNESS CLAMP
Connect the speed sensor and wire harness clamp to the steering knuckle with the 2 bolts.
Torque: 8.0 N´m (82 kgf´cm, 71 ft´lbf)
6. 4WD:
INSTALL DRIVE SHAFT LOCK NUT
(a) While applying the brakes, tighten the nut.
Torque: 235 N´m (2,400 kgf´cm, 173 ft´lbf)
(b) Install the lock cap and a new cotter pin.
If the holes for the cotter pin are not aligned, tighten the nut further up to 60°.
7. INSTALL GREASE CAP
8. INSTALL FRONT WHEEL
Torque: 110 N´m (1,150 kgf´cm, 83 ft´lbf)
9. DEPRESS BRAKE PEDAL SEVERAL TIMES
10. CHECK FRONT WHEEL ALIGNMENT (See page SA±4)
11. CHECK SPEED SENSOR SIGNAL (See page DI±899)
12. PERFORM ZERO POINT CALIBRATION OF STEERING ANGLE, MASTER CYLINDER PRES-
SURE, YAW RATE AND DECELERATION SENSORS (See page DI±897)