2001 TOYOTA SEQUOIA steering wheel

DI±1496
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1690 Author: Date:
2005 SEQUOIA (RM1146U)
SRS Warning Light Circuit Malfunction (Does not light up, when
ignition switch is turned to on)
CIRCUIT DESCRIPTION
The SRS warning light is located on the combination meter assembly.
When the SRS is normal, the SRS warning light comes on for approximately 6 seconds after the ignition
switch is turned from the LOCK position to the ON position, and then goes off automatically.
If there is a malfunction in the SRS, the SRS warning light comes on to inform the driver of a problem.
When terminals TC and CG of the DLC3 are connected, the DTC is displayed by blinking the SRS warning
light.
WIRING DIAGRAM
See page DI±1491.
INSPECTION PROCEDURE
CAUTION:
Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag de-
ployment.
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the airbag sensor assembly.
(d) Disconnect the connectors from the steering wheel pad.
(e) Disconnect the connectors from the front passenger airbag assembly.
(f) w/ Side and curtain shield airbag:
Disconnect the connectors from the side airbag assembly LH and RH.
(g) w/ Side and curtain shield airbag:
Disconnect the connectors from the curtain shield airbag assembly LH and RH.
(h) Disconnect the connectors from the front seat outer belt LH and RH.
1 Check battery.
CHECK:
Measure the voltage of the battery.
OK:
Voltage: 11 to 14 V
NG Replace battery.
OK
DIDHV±01

H40173G27651H23482
DLC3:
TC
Airbag Sensor Assembly:
A20
TC
D6
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±1499
1693 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
CAUTION:
Be sure to perform the following procedures before troubleshooting to avoid unexpected airbag de-
ployment.
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the airbag sensor assembly.
(d) Disconnect the connectors from the steering wheel pad.
(e) Disconnect the connectors from the front passenger airbag assembly.
(f) w/ Side and curtain shield airbag:
Disconnect the connectors from the side airbag assembly LH and RH.
(g) w/ Side and curtain shield airbag:
Disconnect the connectors from the curtain shield airbag assembly LH and RH.
(h) Disconnect the connectors from the front seat outer belt LH and RH.
1 Check wire harness (DLC3 ± airbag sensor assembly).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester ConnectionConditionSpecified Condition
D6±13 (TC) ±
A20±15 (TC)AlwaysBelow 1 W
NG Repair or replace wire harness (TC of DLC3 ± TC
of airbag sensor assembly).
OK

I28553
+/RES
CANCEL±/SETON±
OFF
312
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±1563
1757 Author: Date:
2005 SEQUOIA (RM1146U)
Proceed to next circuit inspection shown in
problem symptoms table
(See page DI±1541).
2 Check cruise control switch continuity.
PREPARATION:
(a) Remove the steering wheel center pad.
(b) Disconnect the cruise control switch connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Switch conditionTester connectionSpecified condition
Neutral1 ± 3Below 1 W
RES/+1 ± 3210 to 270 W
SET/±1 ± 3560 to 700 W
CANCEL1 ± 31,380 to 1,700 W
Main Switch OFF1 ± 310 kW or higher
Main Switch ON1 ± 3Below 1 W
NG Replace cruise control switch.
OK

AT13B±01
F17895
Steering Wheel Pad
Steering
Wheel
Column Lower
CoverCombination
SwitchSteering Column Assembly
Transmission Control
Cable Assembly
Lower LH Finish PanelColumn Hole
Cover No. 2
No. 2 Universal
Joint Assembly
No. 2 Heater to Register Dust Torx® Screw
35 (360, 26)
35 (360, 26)
8.0 (82, 71 in.´lbf)
26 (260, 19)
26 (260, 19)
8.8 (90, 78 in.´lbf)
50 (510, 37)
8.8 (90, 78 in.´lbf)
Front Door Scuff PlateCowl Side Trim
Hood Lock
Release Lever
8.0 (82, 71 in.´lbf)
Side Panel
No. 2 lntermediate
Shaft AssemblyBrake Pedal
Return Spring
Column Upper Cover
N´m (kgf´cm, ft´lbf): Specified torque
Steering Wheel Lower
No. 3 Cover
Steering Wheel Lower
No. 2 Cover
35 (360, 26)
Siding Yoke
Torx® Screw AT±18
± AUTOMATIC TRANSMISSION (A750E, A750F)COLUMN SHIFT ASSEMBLY
2926 Author: Date:
2005 SEQUOIA (RM1146U)
COLUMN SHIFT ASSEMBLY
COMPONENTS

SA140±10
± SUSPENSION AND AXLETROUBLESHOOTING
SA±1
2997 Author: Date:
2005 SEQUOIA (RM1146U)
TROUBLESHOOTING
PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely
cause of the problem. Check each part in order. If necessary, replace these parts.
SymptomSuspect AreaSee page
Bottoming
1. Vehicle (Overloaded)
2. Spring (Weak)
3. Shock absorber (Worn)±
SA±63
SA±135
SA±66
SA±135
Sways/pitches
1. Tire (Worn or improperly inflated)
2. Stabilizer bar (Bent or broken)
3. Shock absorber (Worn)SA±3
SA±90
SA±149
SA±66
SA±135
Front wheel shimmy
1. Tire (Worn or improperly inflated)
2. Wheel (Out of balance)
3. Shock absorber (Worn)
4. Wheel alignment (Incorrect)
5. Ball joints (Worn)
6. Hub bearing (Loose or worn)
7. Steering linkage (Loose or worn)
8. Steering gear (Out of adjustment or broken)SA±3
SA±3
SA±66
SA±4
SA±83
SA±88
SA±21
±
SR±37
Abnormal tire wear
1. Tire (Improperly inflated)
2. Wheel alignment (Incorrect)
3. Shock absorber (Worn)
4. Suspension parts (Worn)SA±3
SA±4
SA±66
SA±139
±
Noise in front differential
1. Oil level (Low or wrong grade)
2. Excessive backlash between pinion and ring gear
3. Ring, pinion or side gear (Worn or chipped)
4. Pinion shaft bearing (Worn)
5. Side bearing (Worn)
6. Differential bearing (Loose or worn)SA±38
SA±50
SA±50
SA±50
SA±50
SA±50
Oil leak from front differential
1. Oil level (Too high or wrong grade)
2. Front differential rear oil seal (Worn or damaged)
3. Side gear oil seal (Worn or damaged)
4. Companion flange (Loose or damaged)
5. Side gear shaft (Damaged)SA±38
SA±38
SA±50
SA±50
SA±50
Noise in rear axle
1. Oil level (Low or wrong grade)
2. Excessive backlash between pinion and ring gear
3. Ring, pinion or side gear (Worn or chipped)
4. Pinion shaft bearing (Worn)
5. Axle shaft bearing (Worn)
6. Differential bearing (Loose or worn)SA±105
SA±109
SA±109
SA±109
SA±94
SA±109
Oil leak from rear axle1. Oil seal (Worn or damaged)
2. Rear axle housing (Cracked)SA±94
±
Oil leak from rear differential
1. Oil level (Too high or wrong grade)
2. Oil seal (Worn or damaged)
3. Companion flange (Loose or damaged)SA±105
SA±105
SA±109

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.

SA17H±11
R03031
F13676
Front (A)(B)
R07928
± SUSPENSION AND AXLETIRE AND WHEEL
SA±3
2999 Author: Date:
2005 SEQUOIA (RM1146U)
TIRE AND WHEEL
INSPECTION
1. INSPECT TIRE
(a) Check the tires for wear and proper inflation pressure.
Cold tire inflation pressure:
Tire sizeFront
kPa (kgf/cm2, psi)
Rear
kPa (kgf/cm2, psi)
P245/70R16220 (2.2, 32)240 (2.4, 35)
P265/70R16220 (2.2, 32)220 (2.2, 32)
P265/65R17220 (2.2, 32)220 (2.2, 32)
(b) Using a dial indicator, check the tire runout.
Tire runout: 3.0 mm (0.118 in.) or less
2. ROTATING TIRE
HINT:

Rotate tires as shown in the illustration.

Rotate as shown in (B) if the spare tire is included in the
rotation.
3. INSPECT WHEEL BALANCE
(a) Check and adjust the Off±the±car balance.
(b) If necessary, check and adjust the On±the±car balance.
Imbalance after adjustment: 14.0 g (0.031 lb) or less
4. CHECK FRONT SUSPENSION FOR LOOSENESS
5. CHECK STEERING LINKAGE FOR LOOSENESS
6. CHECK BALL JOINT FOR LOOSENESS
7. CHECK SHOCK ABSORBER WORKS PROPERLY

Check if oil leaks.

Check the mounting bushings for wear.

Bounce front and rear of the vehicle.

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.