open hood TOYOTA SEQUOIA 2001 Service Repair Manual

MA001±42
± MAINTENANCEOUTSIDE VEHICLE
MA±1
48 Author: Date:
2005 SEQUOIA (RM1146U)
OUTSIDE VEHICLE
GENERAL MAINTENANCE
The owners are responsible for these maintenance and inspection items.
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. TIRES
(a) Check the pressure with a gauge.
If necessary, adjust.
(b) Check for cuts, damage or excessive wear.
3. WHEEL NUTS
When checking the tires, check the nuts for looseness or for missing.
If necessary, tighten them.
4. TIRE ROTATION (See page SA±3)
Check the owner's manual supplement in which the maintenance schedule is shown.
5. WINDSHIELD WIPER BLADES
Check for wear or cracks whenever they do not wipe clean.
If necessary, replace.
6. FLUID LEAKS
(a) Check underneath for leaking fuel, oil, water or other fluid.
(b) If you smell gasoline fumes or notice any leak, find the cause and correct.
7. DOORS AND ENGINE HOOD
(a) Check that all doors and the tailgate operate smoothly, and that all latches lock securely.
(b) Check that the engine hood secondary latch secures the hood from opening when the primary latch
is released.

DI±1690
± DIAGNOSTICSBODY CONTROL SYSTEM
1884 Author: Date:
2005 SEQUOIA (RM1146U) HCTY ± GND1
(B7±14 ± B6±6)
L±W ± W±BEngine hood courtesy
switch signalHood courtesy light switch ON
(Open)Below 1 V
HCTY ± GND1
(B7±14 ± B6±6)L±W ± W±BEngine hood courtesy
switch signalHood courtesy light switch OFF
(Close)10 to 14 V
WIG ± GND1
(B7±5 ± B6±6)L±Y ± W±BIgnition Switch (IG)Ignition switch LOCKBelow 1 V
WIG ± GND1
(B7±5 ± B6±6)L±Y ± W±BIgnition Switch (IG)Ignition switch ON10 to 14 V
IG ± GND1
(B7±6 ± B6±6)B±R ± W±BIgnition Switch (IG)Ignition switch LOCKBelow 1 V
IG ± GND1
(B7±6 ± B6±6)B±R ± W±BIgnition Switch (IG)Ignition switch ON10 to 14 V
RWW ± GND1
(B7±4 ± B6±6)G±B ± W±BRear washer switch
(ON)Rear washer switch ONBelow 1 V
RWW ± GND1
(B7±4 ± B6±6)G±B ± W±BRear washer switch
(ON)Rear washer switch OFF10 to 14 V
ACT+ ± GND1
(B5±1 ± B6±6)L±R ± W±BDoor lock motor (UN-
LOCK)Power door lock not operating or
operating to UNLOCKBelow 1 V
ACT+ ± GND1
(B5±1 ± B6±6)L±R ± W±BDoor lock motor (UN-
LOCK)Power door lock operating to
LOCK10 to 14 V
ACT± ± GND1
(B5±10 ± B6±6)L±B ± W±BDoor lock motor
(LOCK)Power door lock not operating or
operating to LOCKBelow 1 V
ACT± ± GND1
(B5±10 ± B6±6)L±B ± W±BDoor lock motor
(LOCK)Power door lock operating to UN-
LOCK twice10 to 14 V
MPX1
(B7±22)W±LMultiplex communica-
tion signalMultiplex communication circuit±
MPX2 (*2)
(B5±24)L±YMultiplex communica-
tion signalMultiplex communication circuit±
MPX3
(B7±20)G±OMultiplex communica-
tion signalMultiplex communication circuit±
ILE ± GND1
(B7±3 ± B6±6)W ± W±BIlluminationMap Light is offBelow 1 V
ILE ± GND1
(B7±3 ± B6±6)W ± W±BIlluminationMap Light is on10 to 14 V
PRG ± GND1
(B5±5 ± B6±6)V ± W±BWireless transmitter
signal groundWireless door look receiver com-
munication circuit±
RDA ± GND1
(B5±4 ± B6±6)R±G ± W±BWireless transmitter
signal inputWireless door lock control sys-
tem is operatedBelow 1 V
RDA ± GND1
(B5±4 ± B6±6)R±G ± W±BWireless transmitter
signal inputWireless door lock control sys-
tem is not operated10 to 14 V
HU ± GND1
(B6±11 ± B6±6)Y±R ± W±BHeadlight dimmer
switch (HI)Headlight dimmer switch position
is Hi beam or FLASHBelow 1 V
HU ± GND1
(B6±11 ± B6±6)Y±R ± W±BHeadlight dimmer
switch (HI)Headlight dimmer switch position
is not Hi beam or FLASH10 to 14 V
HF ± GND1
(B6±8 ± B6±6)R±L ± W±BHeadlight dimmer
switch (FLASH)Headlight dimmer switch position
is FLASHBelow 1 V
HF ± GND1
(B6±8 ± B6±6)R±L ± W±BHeadlight dimmer
switch (FLASH)Headlight dimmer switch position
is not FLASH10 to 14 V
TAIL ± GND1
(B6±7 ± B6±6)G ± W±BLight control switch
(TAIL)Light control switch TAIL or
HEADBelow 1 V

DID99±01
DI±1694
± DIAGNOSTICSBODY CONTROL SYSTEM
1888 Author: Date:
2005 SEQUOIA (RM1146U)
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
According to the DATA LIST displayed by the hand±held tester, you can read the values of the switches,
sensors, actuators and so on without parts removal. Reading the DATA LIST as a first step of troubleshooting
is one of the methods to shorten labor time.
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
(c) According to the display on the tester, read the ºDATA LISTº.
BODY ECU:
ItemMeasurement Item/Display
(Range)Normal ConditionDiagnostic Note
KEY UNLK WRN SWKey unlock warning switch/ON or
OFFON: Key is in ignition key cylinder
OFF: No key is in ignition key cyl-
inder
±
ACC SWACC switch/ON or OFFON: Ignition switch ACC
OFF: Ignition switch OFF±
IG SWIG switch/ON or OFFON: Ignition switch ON
OFF: Ignition switch OFF±
PARKING BRAKE SWParking brake switch/ON or OFF
ON:
Parking brake pedal depressed
(ON)
OFF:
Parking brake released (OFF)
±
HOOD COURTSY SWHood courtesy switch/ON or OFF
ON: Engine hood OPEN
(Hood courtesy switch ON)
OFF: Engine hood CLOSED
(Hood courtesy switch OFF)
±
D DOR CTY SWDriver door courtesy light switch/
ON or OFFON: Driver door is opened
OFF: Driver door is closed±
P DOR CTY SWFront passenger door courtesy
light switch/ON or OFF
ON: Front passenger door is
opened
OFF: Front passenger door is
closed
±
Rr DOR CTY SWRear passenger door courtesy
light switch/ON or OFF
ON: Rear passenger door is
opened
OFF: Rear passenger door is
closed
±
MIRR SEL SW RRemote control mirror switch pas-
senger side/ON or OFF
ON: Remote control mirror switch
passenger side is selected
OFF: Remote control mirror switch
passenger side is not selected
±
MIRR SEL SW LRemote control mirror switch driv-
er side/ON or OFF
ON: Remote control mirror switch
driver side is selected
OFF: Remote control mirror switch
driver side is not selected
±
MIRR POS SW RRemote control mirror switch R
position/ON or OFF
ON: Remote control mirror switch
R position is selected
OFF: Remote control mirror switch
R position is not selected
±

I18736
1 22014Body ECU
HCTY
B7
IA1
AJ1
J/CL±W E3
Engine Hood
Courtesy SW
W±B
EA L±W
± DIAGNOSTICSBODY CONTROL SYSTEM
DI±1725
1919 Author: Date:
2005 SEQUOIA (RM1146U)
Engine Hood Courtesy Switch Circuit
CIRCUIT DESCRIPTION
The engine hood courtesy switch is built into the engine hood lock assembly, and is turned on when the en-
gine hood is opened and goes off when the engine hood is closed.
WIRING DIAGRAM
DI7NV±08

I00298
1 (+)
2 (±)
DI±1726
± DIAGNOSTICSBODY CONTROL SYSTEM
1920 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
HINT:
When using the hand±held tester, start the inspection from step 1 and when not using the hand±held tester,
start from step 2.
1 Check engine hood courtesy switch using hand±held tester.
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
CHECK:
According to the display on the tester, read the ºDATA LISTº.
BODY ECU:
ItemMeasurement Item/Display
(Range)Normal ConditionDiagnostic Note
HOOD COURTSY SWHood courtesy switch/ON or OFF
ON: Engine hood OPEN
(Hood courtesy switch ON)
OFF: Engine hood CLOSE
(Hood courtesy switch OFF)
±
OK:
The indication on the tester switches between ON and OFF in accordance with the engine hood
courtesy switch status.
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI±1686).
NG
2 Check engine hood courtesy switch.
PREPARATION:
Disconnect the engine hood courtesy switch connector.
CHECK:
Check continuity between terminals 1 and 2 when the engine
hood lock is locked and unlocked.
OK:
Engine hood lock
conditionTester connectionSpecified condition
LOCK1 ± 2No continuity
UNLOCK1 ± 2Continuity
NG Replace engine hood courtesy switch.
OK

± BODY ELECTRICALTROUBLESHOOTING
BE±9
3413 Author: Date:
2005 SEQUOIA (RM1146U)
POWER DOOR LOCK CONTROL SYSTEM
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.
SymptomSuspect AreaSee page
All the doors cannot be locked or unlocked.
(Power window control system is normal.)1. Door Unlock Detection Switch
2. Door Key Lock and Unlock Switch
3. Driver Door ECUBE±79
BE±79
±
Only one back lock control does not operate.
1. Back Door Lock Motor
2. Back Door Unlock Detection Switch
3. Back Door Key Lock and Unlock Switch
4. Back Door ECUBE±79
BE±79
BE±79
±
Driver door key related function does not operate.1. Door Key Lock and Unlock Switch
2. Driver Door ECUBE±79
±
Front passenger door key related function does not operate.1. Door Key Lock and Unlock Switch
2. Passenger Door ECUBE±79
±
Back door key related function does not operate.1. Door Key Lock and Unlock Switch
2. Back Door ECUBE±79
±
THEFT DETERRENT SYSTEM
This system uses the multiplex communication system, so check diagnosis system of the multiplex commu-
nication system before you proceed with troubleshooting.
SymptomSuspect AreaSee page
The theft deterrent system cannot be set.
1. Key Unlock Warning Switch Circuit
2. Door Unlock Detection Switch Circuit (Driver Door ECU)
Door Unlock Detection Switch Circuit (Passenger Door
ECU)
Door Unlock Detection Switch Circuit (Back Door ECU)
Door Unlock Detection Switch Circuit (Body ECU)
3. Engine Hood Courtesy Switch Circuit
4. Back Door Courtesy Light Switch
5. Courtesy Light Switch Circuit
6. Glass Breakage Sensor Circuit (*1)
7. Body ECUDI±1715
DI±1791
DI±1829
DI±1869
DI±1723
DI±1725
DI±1864
DI±1728
DI±1774
±
The system cannot be canceled when the ignition switch is turned
ON with a key.
1. AM1 Fuse
2. AM2 Fuse
3. Key Unlock Warning Switch Circuit
4. Ignition Switch
5. Body ECUBE±14
BE±14
DI±1715
BE±24
±
The system cannot be canceled when the back door is unlocked
with a key.
1. Back Door Unlock Detection Switch Circuit
2. Back Door Key Lock and Unlock Switch Circuit
3. Back door ECU
4. Body ECUDI±1869
DI±1882
±
±
The system does not operate when the engine hood is opened.1. Engine Hood Courtesy Switch Circuit
2. Body ECUDI±1725
±
Some of the system does not operate.
(Headlight does not come on.)
1. Bulb
2. HEAD Relay
3. DIMMER Relay
4. DRL No. 4 Relay
5. Headlight Dimmer Switch
6. Light Control Switch
7. Wire Harness
8. Body ECU±
BE±27
BE±27
BE±27
BE±27
BE±27
±
±

Disarmed state
Perform any of the following and the system will go on to ºArming preparationº:

With all the doors, the engine hood and the back door closed, lock all doors with the key.

With all the doors, the engine hood and the back door closed, lock all doors by the
wireless remote control.

With all the doors, engine hood and back door locked, open and close any of the doors, the
engine hood or the back door, then close and lock all doors, the engine hood and the back door.
Arming preparation
Perform the following and the system will
go on to ºArmed stateº:

Let 30 seconds elapse with all the doors,
engine hood and the back door closed and
locked.
Perform any of the following and the system
will return to ºDisarmed stateº:

Open any of the doors, the engine hood or
the back door .

Unlock any of the doors or the back door.

Put the key in the key cylinder.

Reconnect the battery.
Armed state
Perform any of the following and the system
will return to ºDisarmed stateº:

Unlock any of the doors or the back door by
the wireless remote control.

Unlock any of the doors or the back door with
the key.

Put the key in the key cylinder and turn it ON.
Perform any of the following and the system
will go on to ºAlarm soundingº:

Open any of the doors or the back door.

Unlock any of the doors or the back door in
any way other than with a key or by the wireless
remote control.

Open the engine hood.

Reconnect the battery.

When input from the optional glass break sensor
is detected (Dealer option).(Key not inserted in key cylinder.)
Alarm sounding
The vehicle's horn and security horn will sound,
and the hazard, interior, tail and head lights come
on for 60 seconds.
After the alarm has stopped, the system will
return to ºArmed stateº. Perform any of the following and the system
will return to ºDisarmed stateº:

Unlock any of the doors and the back door by
the wireless remote control.

Unlock any of the doors or the back door with
the key.

Put the key in the key cylinder and turn it ON.
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
BE±83
3487 Author: Date:
2005 SEQUOIA (RM1146U)
2. ACTIVE ARMING MODE

Perform any of the following and the system will go to disarmed state (B):

Turn the key from IG to OFF and remove the key from the ignition, open the driver's door.
Disarmed state (A)
Perform any of the following and the system
will return to disarmed state (A):

Push the unlock switch on the transmitter.

Put the key in the key cylinder.

Reconnect the battery.

Turn the ignition from OFF to ON.

Unlock any of the doors or back door with
the key.Disarmed state (B)Perform the following and the system will go
to arming preparation:

Close all the doors, hood and
back door.
Perform any of the following
and the system
will return to disarmed state
(B):

Open any of the doors, the
hood or the back door.
Arming preparation
Perform the following and the
system will go to armed state:

Allow 30 seconds to elapse
with all the doors, hood and
back door closed.
Perform any of the following and
the system
will return to disarmed state (A):

Push the unlock switch on the
transmitter.

Put the key in the ignition.

Reconnect the battery.

Turn the ignition from OFF to
ON.

Unlock any of the doors or back
door with the key.
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
BE±85
3489 Author: Date:
2005 SEQUOIA (RM1146U)
3. PASSIVE ARMING MODE
This mode can be switched by the C±BEST customizing
function (See page DI±1684).
All modes are initially set to active when shipped from fac-
tory (no passive mode).

Perform the following and the system will return
to armed state:

Allow the alarm sounding period to pass.
Alarm sounding
Perform any of the following and the system will
return to disarmed state (A):

Push the unlock switch on the transmitter.

Put the key in the key cylinder and turn it ON.

Unlock any of the doors or the back door
with the key.
Perform any of the following and the system will
return to disarmed state (A): *

Push the unlock switch on the transmitter.

Put the key in the key cylinder and turn it ON.

Unlock any of the doors or the back door
with the key.
Armed state
Perform and/or detect any of the following
and the system will go on to alarm sounding:

Open any of the doors or the back door and
allow the entry delay time to pass.

Open the hood.

Reconnect the battery.

Ignition switch is connected directly.

Broken window glass.
BE±86
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
3490 Author: Date:
2005 SEQUOIA (RM1146U)

I04146
BE1W8±05
I04148
ON OFF BE±92
± BODY ELECTRICALTHEFT DETERRENT SYSTEM
3496 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECT THEFT DETERRENT HORN OPERATION
Connect the positive (+) lead from the battery to terminal 1 and
negative (±) lead to the theft deterrent horn body, and check
that the theft deterrent horn blows.
If operation is not as specified, replace the horn.
2. INSPECT ENGINE HOOD COURTESY SWITCH CON-
TINUITY
Switch positionTester connectionSpecified condition
CLOSE (OFF)±No continuity
OPEN (ON)1 ± 2Continuity
If continuity is not as specified, replace the switch.
3. INSPECT ENGINE HOOD COURTESY SWITCH CIR-
CUIT (See page DI±1725)