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TOYOTA MOTOR CORPORATION Overseas Customer Service Technical Division
Area Application : General, G.C.C. Countries
Model Name : LAND CRUISER PRADO
Model Code : TRJ120, 125
Subject : ENGINE IMMOBILIZER SYSTEM (KEY CODE REGISTRATION)
Models with the 3RZ−FEengine have been discontinued and changed with models with the 2TR−FE
engine. In accordance with addition of models with the 2TR−FE engine, this Service Bulletin has
been published. The contents concerning the immobilizer system have not been changed from
those of models with the 3RZ−FE engine.
Production Effective :
VIN Production Date
− − − From August, 2004
Ref. No. : BE−4022
Date : Oct., 2004
Page : 1 of 11
Section : Body
Electrical
Ref. No. : BE−4022
Page : 2 of 11
TOYOTA MOTOR CORPORATION Overseas Customer Service Technical Division
ENGINE IMMOBILIZER SYSTEM
1. DESCRIPTION OF CODE REGISTRATION
(a) When replacing the transponder key ECU (new registration)
(1) Register the key code (immobilizer code) in the transponder key ECU.
Target ECU See Step
Transponder key ECU 2
(2) Register the ECU COMMUNICATION ID between the ECM and the transponder key
ECU.
Target ECU See Step
Transponder key ECU 5
(b) When adding master keys and sub−keys (additional registration)
(1) Register the key code (immobilizer code) in the transponder key ECU.
Target ECU See Step
Transponder key ECU 3
(c) Erasure of key code
(1) Erase the key code.
Target ECU See Step
Transponder key ECU 4
(d) When replacing the ECM.
(1) Register the ECU COMMUNICATION ID between the ECM and the transponder key
ECU.
Target ECU See Step
Transponder key ECU 5
Ref. No. : BE−4022
Page : 3 of 11
TOYOTA MOTOR CORPORATION Overseas Customer Service Technical Division
2. KEY REGISTRATION IN AUTOMATIC REGISTRATION (NEW REGISTRATION)
(a) When an ignition key is inserted into the ignition cylinder, the key code (immobilizer code) registration
is automatic. In this mode, a maximum of 3 key codes for 2 master keys and 1 sub−key
can be registered. Any order of registration for the master keys and sub−keys is possible because
the transponder key ECU can distinguish between different types of keys.
HINT:
S When a new transponder key ECU is installed, key codes (immobilizer codes) must be registered
with ignition keys.
S New transponder key ECUs are automatically set to the automatic key code registration mode.
Registration begins.
END
START
Insert the key into the ignition key cylinder.
(The registration is completed approx. 1 second after the
key is inserted.)
Remove the key.
Register another key?
No
Yes
BLINKING
(Until the first key is
inserted)
OFF
(Approx. 1 second)
ON
(Whenthe maximum
number of key codes
are registered, the
security indicator remains
OFF until the
last registered key is
removed. After it is
removed, the security
indicator starts
blinking.)
Automatic Key Code Registration Security Indicator
(New Registration):
ON
Ref. No. : BE−4022
Page : 4 of 11
TOYOTA MOTOR CORPORATION Overseas Customer Service Technical Division
1.8 sec.
0.2 sec.
0.25 sec. 0.5 sec.
0.25 sec.
Code 2−1
Code 2−2
1 sec.
Normal
(Immobilizer system is
operating normally)
ON
OFF
ON
OFF
ON
OFF
0.25 sec. 1 sec.
0.25 sec.
0.25 sec. 1 sec.
0.25 sec.
Code 2−3
ON
OFF
0.5 sec.
0.5 sec.
Security Indicator
Ref. No. : BE−4022
Page : 5 of 11
TOYOTA MOTOR CORPORATION Overseas Customer Service Technical Division
HINT:
S When no key is inserted in the ignition key cylinder in automatic key code registration mode,
the security indicator remains ON.
S When the immobilizer system is operating normally and the key is pulled out, the security indicator
blinks continuously.
S If the key code registration has failed in automatic key code registration mode, code 2−1 will
be output from the security indicator. Trying to re−register an already registered key will cause
code 2−2 to be output when the key is inserted. If the number of registered key codes exceeds
the limit, code 2−3 will be output from the security indicator. The output details are shown below.
Ref. No. : BE−4022
Page : 6 of 11
TOYOTA MOTOR CORPORATION Overseas Customer Service Technical Division
(b) Finish the automatic key code registration mode.
HINT:
The automatic key code registration mode can be forced to end when at least 1 key code (immobilizer
code) for the master key has been registered.
3. REGISTRATION OF ADDITIONAL KEY (ADDITIONAL REGISTRATION)
(a) Register an additional key using the intelligent tester II.
HINT:
S A maximum of 5 master key codes and 3 sub−key codes can be registered.
S Registration mode will end if each step is not completed within the specified time.
S When the ignition cylinder or the key cylinder set is replaced, remove the transmitter module
from the original master key. Then install this transmitter module to a new key and use the new
key as the master key. If necessary, use this master key to register other keys.
NOTICE:
When the ignition key cylinder has been replaced, locking and unlocking doors is possible
with the new master key’s transmitter module (taken from the original master key). However,
the new master key will not be able to lock and unlock doors through the door key cylinder.
Keep the original master key. If the new master key’s transmitter module’s battery fails, the
original master key can be used to lock and unlock doors through the door key cylinder.
Remove the master key.
Insert the already registered master key into the ignition
key cylinder and turn the ignition switch ON.
1. Select Body.
2. Select Steering Lock.
3. Select Utility.
4. Select Transponder Code Registration
After the above operation, proceed to the next step
according to the prompts on the tester screen.
Insert the key to be registered into the ignition key cylinder.
After 60 seconds, the key is registered.
(The security indicator turns OFF.)
Within 120 seconds
Within 20 seconds
after the tester
instruction
Within 10 seconds
Intelligent tester II operation:
END
START
Security Indicator
BLINKING
(Until the first
key is inserted)
OFF
ON
BLINKING
OFF
Additional Registration
Ref. No. : BE−4022
Page : 7 of 11
TOYOTA MOTOR CORPORATION Overseas Customer Service Technical Division
Insert the already registered master key into the ignition key
cylinder.
F Driver door is closed.
F Key is not inserted in ignition key cylinder.
Insert and remove the key into/from the ignition switch
5 times.
After 60 seconds, key is registered.
(The security indicator is OFF)
Within 35 seconds
Within 10 seconds
END
Vehicle should be in the following conditions:
Open and close the driver door 6 times.
Remove the master key.
Insert the key to be registered into the ignition key cylinder.
OFF
OFF
ON
BLINK
Security Indicator
Ref. No. : BE−4022
Page : 8 of 11
TOYOTA MOTOR CORPORATION Overseas Customer Service Technical Division
HINT:
S A brief outline of procedures for key code registration is shown on the previous page. For more
detailed information, please refer to the intelligent tester II screen’s instructions.
S When the immobilizer system is operating normally and the key is pulled out, the security indicator
blinks continuously.
S If the key code registration has failed in automatic key code registration mode, code 2−1 will
be output from the security indicator. Trying to re−register an already registered key will cause
code 2−2 to be output when the key is inserted. If the number of registered key codes exceeds
the limit, code 2−3 will be output from the security indicator. The output details are shown in
step 2 (new registration).
(b) Register an additional key by switch operation:
Remove the master key.
Insert the already registered master key into the
ignition key cylinder and turn the ignition switch ON.
After the above operation, proceed to the next step
in accordance with the tester screen’s instructions.
Within 120 seconds
Within 10 seconds
after the tester
indicates
Intelligent tester II operation:
END
OFF
BLINKING
ON for 1 second
then OFF
START
Security Indicator
BLINKING
(Until the first
key is inserted)
1. Select Body.
2. Select Steering Lock.
3. Select Utility.
4. Select Transponder Code Erasure.
Erasing Key Code
Ref. No. : BE−4022
Page : 9 of 11
TOYOTA MOTOR CORPORATION Overseas Customer Service Technical Division
4. ERASURE OF KEY CODE
(a) Erase the key codes using the intelligent tester II.
HINT:
S All the key codes are erased except for the master key, which is used for erasing the key codes.
In order to use a key whose code has been erased, a new key code must be registered.
S Registration will be cancelled if each step is not completed within the specified time.
HINT:
S A brief outline of procedures for key code registration is shown on this page. For more detailed
information, please refer to the intelligent tester II screen’s instructions.
S When the immobilizer system is operating normally and the key is pulled out, the security indicator
blinks continuously.
Insert the already registered master key into the ignition key
cylinder.
F Driver door is closed.
F Key is not inserted in ignition key cylinder.
Within 35 seconds
Within 10 seconds
END
Vehicle should be in the following conditions:
Open and close the driver door 7 times.
Remove the master key.
Remove the master key.
OFF
ONfor 1 second
then OFF
BLINK
Security Indicator
Insert and remove the key into/from the ignition switch
6 times.
Ref. No. : BE−4022
Page : 10 of 11
TOYOTA MOTOR CORPORATION Overseas Customer Service Technical Division
(b) Erase the key codes by switch operation:
B17891
CG
TC
DCL3:
Ref. No. : BE−4022
Page : 11 of 11
TOYOTA MOTOR CORPORATION Overseas Customer Service Technical Division
5. ECU COMMUNICATION ID REGISTRATION:
NOTICE:
S The ECU communication ID should be registered
when the transponder key ECU and/or
the ECM is replaced, in order to match the
ECM communication ID.
S The engine cannot be started unless the ECM
communication ID matches.
(a) Register the ECU Communication ID
(1) Using SST, connect terminals TC and CG
of the DLC3.
STT 09843−18040
(2) Turn the ignition switch ON (do not start the
engine) and leave it as is for 30 minutes.
(3) Turn the ignition switch OFF and disconnect
terminals TC and CG.
(4) Check that the engine starts.
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