engine TOYOTA SEQUOIA 2001 Service Repair Manual

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)

START
Insert the key in the key cylinder.
Under registration
Registration completion
Remove the key.
Will you register the
next key?
NoSecurity indicator blinks until the first
key is inserted. The indicator comes
on after the key registration.
Security Indicator
OFF
END Ye s
Security Indicator ON
(After the last key (sub±key) has been
registered, the indicator remains OFF
until the key is removed. After the key
is removed, the indicator blinks.)
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
BE±137
3541 Author: Date:
2005 SEQUOIA (RM1146U)
ENGINE IMMOBILISER SYSTEM
REGISTRATION PROCEDURE
HINT:
If you lose all the registered master keys, you cannot registrar or delete additionally. Change the transponder
key ECU and then register the new key codes following the registration procedure of the automatic registra-
tion mode below.
1. KEY REGISTRATION IN AUTOMATIC REGISTRATION MODE
(a) Registration of a new transponder key.
HINT:

This procedure must be done when you install a new transponder key ECU.

The new transponder key ECU is in automatic key code registration mode. The key codes already fixed
for this transponder key ECU can be registered.
For this type of vehicle, up to 3 key codes can be registered.

In the automatic registration mode, the last key registered becomes a sub±key.

1.8 Sec.
0.2 Sec.
0.25 Sec. 0.5 Sec.0.25 Sec.
1 Sec. Blinks
Code 2±1 Code 2±2
0.25 Sec.
0.25 Sec.0.5 Sec. 1 Sec. BE±138
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
3542 Author: Date:
2005 SEQUOIA (RM1146U)
HINT:

When a key cannot be inserted in the key cylinder in automatic registration mode, the security indicator
always comes on.

When the immobilizer system operates normally and the key is pull out, the security indicator blinks.

When key code registration could not be performed in automatic registration mode, code 2±1 is output
from the security indicator and when the registered key in inserted, code 2±2 is output.
(b) Automatic registration mode completion
If completing the mode forcibly when more than 1 key codes are registered in automatic registration
mode, perform the following procedures.
After 1 more key codes are registered with the master key, turn the ignition switch LOCK "ON 5 times
within 10 secs. by inserting the registered key or without pulling the key out.

START
END
All doors closed. No key in the key cylinder.
Insert the registered master key in the key cylinder.
Ignition switch: LOCK " ON 5 times
Driver's door: Open " Close 6 times
Remove the master key.
Insert the key to be registered in the key cylinder.
Keep ignition switch in ON position for 60 seconds or more.
Remove the master key.
Do you register another key?
Driver's door: Open " Close
within
15 secs.
within
20 secs.
within
10 secs.
within
10 secs.
within
10 secs.*6
*5 *4 *3 *2 *1
No Ye s
10 secs.
or
more
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
BE±139
3543 Author: Date:
2005 SEQUOIA (RM1146U)
2. REGISTRATION OF ADDITIONAL MASTER KEY AND SUB KEY
Do this operation to register an additional master key and sub key.

BE±140
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
3544 Author: Date:
2005 SEQUOIA (RM1146U)
*1: Insert the master key into the key cylinder.
Turn the ignition switch to the LOCK " ON position 5 times within 15 seconds.
*2: Open and close the driver's door 6 times within 20 seconds after completion of the previous operation.
*3: Remove the master key from the ignition switch and insert another key to be registered in the key cylinder
within 10 seconds after completion of the previous operation.
*4: Turn the ignition switch to the ON position and wait for 60 seconds or more, then key registration will be
completed.
*5: 10 seconds or more elapse after removal of the key or open and close the driver's door, then key registra-
tion will be completed.
*6: When registering multiple keys, insert the key to be registered in the key cylinder.
HINT:

It is possible to register up to 4 master key codes including the registered key code.

It is possible to register up to 2 sub key codes including the registed key code.

When any operation time described above is over, registration mode completes.

When the next procedure is performed while the timer is working, the timer completes counting time,
then the next timer starts.

Insert the master key in the key cylinder.
Driver's door: Open " Close 7 times Ignition switch: LOCK " ON 6 times
Remove the master key.START
END
*1
*2within
15 secs.
within
20 secs.
All doors closed. No key in the key cylinder.
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
BE±141
3545 Author: Date:
2005 SEQUOIA (RM1146U)
3. ERASURE OF TRANSPONDER KEY CODE
Do this operation to erase transponder key registration from the transponder key computer.
HINT:
Delete all other master and sub±key codes leaving the master key code to use the operation. When using
the key which was used before deletion, it is necessary to register the code again.
*1: Insert the master cylinder into the key cylinder.
Turn the ignition switch to LOCK " ON 6 times within 15 seconds.
*2: Open and close driver's door 7 times and remove the master key within 20 seconds after completion of
the previous operation.
HINT:

When any operation time described above is over, registration mode completes.

When the next procedure is performed while the timer is working, the timer completes counting time,
then the next timer starts.
4. ECU COMMUNICATION ID REGISTRATION
NOTICE:

The ECU communication ID should be registered when the transponder key ECU and/or the
ECM is replaced, in order to match these ECM COMMUNICATION ID.

The engine cannot be started unless the ECM COMMUNICATION ID matches.
(a) Register the ECU communication ID.
(1) After the transponder key ECU and/or the ECM is replaced, turn the ignition switch ON (the en-
gine is not running).
(2) Short the Tc and CG terminals of the DLC3 and leave it as it is for 30 minutes.
(3) Check that the engine starts.

BE0D8±11
I28395
Transponder Key Coil
Transponder Key AmplifierECM
Instrument
Panel J/B

IGN 1 Fuse
Engine Room J/B

ECU±B Fuse

EFI No. 1 Fuse
Combination Meter

Security Indicator Light
DLC3
Transponder Key ECU
(Located behind the combination meter)
BE±142
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
3546 Author: Date:
2005 SEQUOIA (RM1146U)
LOCATION

BE2D6±02
I10154
I24870
12
6
± BODY ELECTRICALENGINE IMMOBILISER SYSTEM
BE±143
3547 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECTION TRANSPONDER KEY COIL CONTINU-
ITY
Check that there is continuity between terminals 1 and 2.
If continuity is not as specified, replace the coil.
2. INSPECT TRANSPONDER KEY ECU CIRCUIT
Connect the wire harness side connector to the ECU and in-
spect the wire harness side connector from the back side, as
shown in the table below.
ConditionTester connectionSpecified condition
Always6 ± 12Battery positive voltage
If the circuit is as specified, replace the ECU with a new one.
If the circuit is not as specified, inspect the circuit connected to
other parts.

BE0FY±32
I28423
Horn
Horn Switch
Engine Room J/B

HORN Relay

HORN Fuse
BE±144
± BODY ELECTRICALHORN SYSTEM
3548 Author: Date:
2005 SEQUOIA (RM1146U)
HORN SYSTEM
LOCATION

BE26G±04
I28424
Engine Room J/B

TOWING Fuse
Trailer Socket
Towing Converter Relay
(Located inside of the quarter trim panel LH)
Engine Room R/B No. 3

BATT CHARGE Relay

TOWING TAIL Relay

TOWING BRK Fuse

TOWING TAIL Fuse
Brake Controller
(Located inside of the cowl side trim board LH)
± BODY ELECTRICALTRAILER TOWING
BE±147
3551 Author: Date:
2005 SEQUOIA (RM1146U)
TRAILER TOWING
LOCATION