TOYOTA SEQUOIA 2001 Service Repair Manual

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

BE0FZ±25
I24377
I24378
I04197
± BODY ELECTRICALHORN SYSTEM
BE±145
3549 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECT HORN SWITCH
(a) Disconnect the negative (±) terminal from the battery.
(b) Remove the left and right covers from the steering wheel.
(c) Using a torx socket wrench, loosen the 2 bolts.
(d) Pull up the horn pad and place it on the steering column,
as shown.
HINT:
Do not disconnect the connector from the horn pad.
(e) Disconnect the connector from the slip ring.
(f) Check that no continuity exists between terminal 6 of the
connector and body ground.
(g) Check that continuity exists between terminal 6 of the
connector and body ground when the horn contact plate
is pressed against the steering spoke assembly.
If continuity is not as specified, repair or replace the steering
wheel or wire harness as necessary.
(h) Install the horn pad in place and using a torx socket
wrench, torque the 2 bolts.
Torque:
7.1 N´m (72 kgf´cm, 62 in.´lbf)
(i) Install the left and right covers.
(j) Connect the negative (±) terminal to the battery.
2. INSPECT HORN OPERATION
Connect the positive (+) lead from the battery to the terminal
and negative (±) lead to the horn body and check that the horn
blows.
If operation is not as specified, replace the horn.
3. INSPECT HORN SWITCH CIRCUIT
(See page DI±1764)

I01200
2 1
35
2 5
1 3
BE±146
± BODY ELECTRICALHORN SYSTEM
3550 Author: Date:
2005 SEQUOIA (RM1146U)
4. INSPECT HORN RELAY CONTINUITY
ConditionTester connectionSpecified condition
Always1 ± 2Continuity
Always3 ± 5No continuity
Apply B+ between
terminals 1 and 2.3 ± 5Continuity
If continuity is not as specified, replace the relay.
5. INSPECT HORN RELAY CIRCUIT
(See page DI±1764)

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

BE2D5±02
I24381
Wire Harness Side: BE±148
± BODY ELECTRICALTRAILER TOWING
3552 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECT TOWING CONVERTER CIRCUIT
Remove the towing converter with the connector still connected
and inspect the wire harness side connector from the back side,
as shown in the table below.
Tester connectionConditionSpecified condition
4 ± 6Turn signal switch LEFT or hazard warning switch ON10 ± 14 V e 0 V
4 ± 6Turn signal switch LEFT and stop light switch ON (Brake pedal depressed)10 ± 14 V e 0 V
4 ± 6Turn signal switch OFF, hazard warning switch OFF and stop light switch OFF
(Brake pedal released)0 V
4 ± 6Stop light switch ON (Brake pedal depressed)10 ± 14 V
6 ± 9Turn signal switch LEFT or hazard warning switch ON10 ± 14 V e 0 V
6 ± 9Turn signal switch OFF or RIGHT and hazard warning switch OFF0 V
6 ± Body groundAlwaysContinuity
2 ± 6Turn signal switch RIGHT or hazard warning switch ON10 ± 14 V e 0 V
2 ± 6Turn signal switch RIGHT and stop light switch ON (Brake pedal depressed)10 ± 14 V e 0 V
26Turn signal switch OFF, and hazard warning switch OFF and stop light switch OFF0V2 ± 6Turn signal switch OFF, and hazard warning switch OFF and sto light switch OFF
(Brake pedal released)0 V
2 ± 6Stop light switch ON (Brake pedal depressed)10 ± 14 V e 0 V
1 ± 6Always10 ± 14 V
6 ± 8Stop light switch ON (Brake pedal depressed)10 ± 14 V
6 ± 8Stop light switch OFF (Brake pedal released)0 V
3 ± 6Turn signal switch RIGHT or hazard warning switch ON10 ± 14 V e 0 V
3 ± 6Turn signal switch OFF or LEFT and hazard warning switch OFF0 V
If the circuit is not as specified, inspect the circuit connected to
other parts.