4WD TOYOTA SEQUOIA 2001 Service Repair Manual

SA2D0±01
F16824
HIGH
NORMAL
LOW SA±156
± SUSPENSION AND AXLEELECTRONIC MODULATED AIR SUSPENSION
3152 Author: Date:
2005 SEQUOIA (RM1146U)
ADJUSTMENT
1. ADJUST STANDARD VEHICLE HEIGHT
(a) Release the parking brake and stabilize the suspensions by pushing up and down on the corners of
the vehicle.
(b) Place the shift lever into the ºNº position and settle the tires by moving the vehicle back and forth.
(c) Start the engine.
(d) On the height control switch, first press ºHIGHº to raise the vehicle height, and then change the switch
to ºLOWº to lower it. Perform this operation one more time.
NOTICE:
Make sure to release the parking brake and move the shift lever into the ºNº position.
2. INSPECT TIRE (See page SA±3)
3. MEASURE VEHICLE HEIGHT (See page SA±4)
4. OPERATE HEIGHT CONTROL SWITCH AND CHECK
VEHICLE HEIGHT CHANGE
(a) Start the engine and change the height control switch
from the NORMAL position to the HIGH and LOW posi-
tions.
Check the time until the height adjustment is completed
and the amount of change in vehicle height.
Adjustment time
From operation of height control switch
to start of compressor.Approx. 2 sec.
From start of compressor to completion
of height adjustment.Approx. 20 sec.
Amount of change in vehicle height
HIGH position: 40 mm (1.57 in.)
LOW position:
4WD models: ±30 mm (±1.18 in.)
2WD models: ±15 mm (±0.59 in.)

F19820
HIGH
NORMAL
LOW
± SUSPENSION AND AXLEELECTRONIC MODULATED AIR SUSPENSION
SA±157
3153 Author: Date:
2005 SEQUOIA (RM1146U)
(b) While adjusting vehicle height in the HIGH position, start
the engine and change the height control switch from the
HIGH position to the NORM position.
Check the time until the height adjustment is completed
and the amount of change in vehicle height.
Adjustment time
From operation of height control switch
to open of exhaust valve.Approx. 2 sec.
From open of exhaust valve to completion
of height adjustment.Approx. 30 sec.
Amount of change in vehicle height
HIGH position: 40 mm (1.57 in.)
LOW position:
4WD models: ±30 mm (±1.18 in.)
2WD models: ±15 mm (±0.59 in.)

I18638
A. Taillight Relay Instrument Panel J/B:
Relays:
B. Back±Up Light Relay
C. ACC Relay
D. Power Main Relay
E. Fog Light Relay
F. MIRROR HEATER Relay
G. FLASHER Relay
H. SEAT HEATER Relay
Fuses:
1. TAIL Fuse
2. PWR No. 4 Fuse
3. PANEL Fuse
4. ECU±IG Fuse
123
4567
89
1011
12
1314
A
BC
DE
GH
F
15
1617 18 19
20
21 22 23
2425
265. CIG Fuse
6. PWR No. 1 Fuse
7. HTR Fuse
8. WSH Fuse
9. RAD No. 2 Fuse
10. WIP Fuse
11. FOG Fuse
12. AC INV Fuse 15 A
13. 4WD Fuse14. IGN1 Fuse
15. GAUGE Fuse
16. IGN 2 Fuse
17. STOP Fuse
18. SUN ROOF Fuse
19. PWR OUTLET Fuse
20. PWR No. 3 Fuse
21. OBD Fuse
22. PWR No. 2 Fuse
23. SEAT HTR Fuse
24. PWR SEAT Fuse
25. AM1 Fuse
26. PWR No. 5 Fuse 15 A 10 A
20 A
7.5 A
10 A
15 A
25 A
10 A
25 A
7.5 A
25 A
15 A
20 A15 A
20 A
15 A
25 A
15 A
20 A
7.5 A
25 A
15 A
30 A
40 A
30 A BE±16
± BODY ELECTRICALPOWER SOURCE
3420 Author: Date:
2005 SEQUOIA (RM1146U)

05_SEQUOIA_U (L/O 0408)
184
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
The brake pad or actuator temperature
increases during continuous operation of
the traction control system or vehicle sta-
bility control system such as on slippery
roads. If the brake pad or actuator tem-
perature becomes too high while the trac-
tion control system or vehicle stability
control system is operating, a buzzer will
start to sound intermittently to indicate
that the traction control system can no
longer operate. In this case, stop your
vehicle immediately at a safe place.
If the system continues to operate, the
buzzer sound changes from intermittent to
continuous. (The continuous buzzer
sounds for about 3 seconds.)
At the time the ªVSC TRACº warning light
will come on and the traction control sys-
tem temporarily stops operating in order to
protect the brake pad. (Although the trac-
tion control system does not operate,
there is no problem to continue your driv-
ing.) The system will be automatically re-
stored after a short time and the warning
light goes out.
If the light comes on while driving, the
traction control system does not work.
However, as conventional braking operates
when applied, there is no problem to con-
tinue your driving.In the following cases, contact your Toyota
dealer:

The warning light does not come on
after the ignition key is turned to ªONº.

The warning light remains on after the
ignition key is turned to ªONº.

The warning light comes on while driv-
ing.
The ªTRAC OFFº indicator light will come
on when the ªVSC TRACº warning light
comes on even if the ªTRAC OFFº switch
is not pushed.The active traction control system auto-
matically helps prevent the spinning of
4 wheels (4WD mode) or rear wheels
(2WD mode) when the vehicle is started
or accelerated on slippery road sur-
faces.
When the ignition key is turned to ªONº,
the system automatically turns on.
CAUTION
Under certain slippery road condi-
tions, full traction of the vehicle and
power against 4 wheels (4WD mode)
or rear wheels (2WD mode) cannot be
maintained, even though the active
traction control system is in opera-
tion. Do not drive the vehicle under
any speed or maneuvering conditions
which may cause the vehicle to lose
traction control. In situations where
the road surface is covered with ice
or snow, your vehicle should be fitted
with snow tires or tire chains. Always
drive at an appropriate and cautious
speed for the present road condi-
tions.
Active traction control system
(four±wheel drive models)

05_SEQUOIA_U (L/O 0408)
185
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
Leave the system on during the ordi-
nary driving so that it can operate
when needed.
You may hear a sound in the engine
compartment for a few seconds when the
engine is started or just after the vehicle
begins to move. This means that the ac-
tive traction control system is in the self±
check mode, but does not indicate a mal-
function.When the active traction control system is
operating, the following conditions occur:

The system controls the spinning of the
4 wheels (4WD mode) or rear wheels
(2WD mode). At this time, the slip indi-
cator light blinks.

You may feel vibration or noise in your
vehicle, caused by operation of the
brakes. This indicates the system is
functioning properly.
The slip indicator light comes on for a few
seconds when the ignition key is turned
to ªONº. If the indicator light does not
come on when the ignition is turned on,
contact your Toyota dealer.
ªVSC TRACº warning light
This light warns that there is a problem
somewhere in the active traction control
system or the vehicle stability control sys-
tem.
The warning light will come on when the
ignition key is turned to ªONº and will go
off after a few seconds.

05_SEQUOIA_U (L/O 0408)
461
2005 SEQUOIA from Aug. '04 Prod. (OM34424U)
38. IGN 2 20 A: Starting system
39. PWR NO.3 20 A: Rear passenger 's
power window (right side)
40. PWR NO.4 20 A: Rear passenger 's
power window (left side)
41. CIG 15 A: Air conditioning systems,
power rear view mirror control, ciga-
rette lighter
42. RAD NO.2 7.5 A: Audio/video system,
power outlets, multiplex communication
system (power door lock system, secu-
rity system, auto±door locking system,
automatic light control system, head-
light delay off system, tail light auto
cut system, illuminated entry system,
daytime running light system)
43. 4WD 20 A: A.D.D. control system,
four±wheel drive system
44. STOP 15 A: Stoplights, high±mounted
stoplights, multiport fuel injection sys-
tem/sequential multiport fuel injection
system, vehicle stability control system,
traction control system (two±wheel
drive models), active traction control
system (four±wheel drive models), mul-
tiplex communication system
45. OBD 7.5 A: On±board diagnosis sys-
tem46. PANEL 7.5 A: Instrument panel lights,
glove box light, seat heaters, cigarette
lighter, ashtrays, multi±information dis-
play, audio/video system, gauge and
meters, air conditioning systems
47. PWR NO.1 25 A: Driver 's door lock
system
48. WIP 25 A: Wiper and washers
49. IGN 1 10 A: Charging system
50. SUN ROOF 25 A: Electric moon roof
51. PWR NO.2 25 A: Front passengers'
door lock system
52. HTR 10 A: Air conditioning systems,
electric cooling fan, back window de-
fogger, outside rear view mirror heater
53. FOG 15 A: Front fog lights
54. GAUGE 15 A: Back±up lights, seat
heaters, gauge and meters, air condi-
tioning systems
55. PWR OUTLET 15 A: Power outlets
56. SEAT HTR 15 A: Seat heatersFuses (type B)
57. MAIN 40 A: Starting system, ªH±LP
RHº, ªH±LP LHº and ªSTAº fuses
58. DOOR NO.2 30 A: Multiplex commu-
nication system (power door lock sys-
tem, security system, auto±door locking
system)
59. PWR SEAT 30 A: Power seats
60. AM1 40 A: ªHTRº, ªCIGº, ªGAUGEº,
ªRAD NO.2º, ªECU±IGº, ªWIPº, ªWSHº
and ª4WDº fuses
61. PWR NO.5 30 A: Power door lock sys-
tem, back door lock system
Fuses (type C)
62. RR HEATER 30 A: Rear air condition-
ing system
63. DEFOG 40 A: Back window defogger
64. HEATER 50 A: Front air conditioning
system
65. AIR SUS 50 A: Rear height control air
suspension system
66. TOWING R/B 60 A: Trailer brake con-
troller, trailer lights (tail lights), trailer
sub battery