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73-23
THEFT DETERRENT & DOOR LOCK - ENGINE IMMOBILIZER SYSTEM

ENGINE IMMOBILIZER SYSTEM
730EO-09

REGISTRATION
1. DESCRIPTION OF CODE REGISTRATION
(a) When adding master keys and sub-keys (Additional registration).
(1) Register the key code (immobiliser code) in the transponder key ECU.
Target ECU See Step
Transponder key ECU 3.
(b) When replacing the transponder key ECU (New registration).
(1) Register the key code (immobiliser 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
ECM 5.
(c) 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.

2005 SIENNA REPAIR MANUAL (RM1163U)

Author : Date : 3331
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THEFT DETERRENT & DOOR LOCK - ENGINE IMMOBILIZER SYSTEM

2. KEY REGISTRATION IN AUTOMATIC REGISTRATION (NEW REGISTRATION)
(a) The new registration of the key codes (immobiliser codes) is made automatically.
HINT:
S When you install a new transponder key ECU, the key codes (immobiliser codes) must be registered.
S A new transponder key ECU starts in the automatic key code registration mode. In this mode, a maxi-
mum of 4 key codes for 3 master keys and 1 sub-key can be registered. Since the transponder key
ECU can distinguish types of keys, the registration order is not specified.

Automatic Key Code Registration Security Indicator
(New Registration)
START

BLINKING
(Until the first key is
inserted.)

Insert the key in the ignition key cylinder.

OFF
(Approx. 1 sec.)
Registration begins.
(The registration is completed approx. 1 sec. after the key is inserted.)

Remove the key.
ON
(When the maximum
number of key codes
are registered, the
security indicator re-
Yes mains OFF until the
Register another key? last key registered is
removed. After it is
removed, the securi-
ty indicator starts
No blinking.)

END

2005 SIENNA REPAIR MANUAL (RM1163U)

Author : Date : 3332
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THEFT DETERRENT & DOOR LOCK - ENGINE IMMOBILIZER SYSTEM

HINT:
S When no key is inserted in the ignition key cylinder in the automatic key code registration mode, the
security indicator remains on.
S When the immobiliser system is operating normally and the key is pulled out, the security indicator
blinks.
NOTICE:
If the key code registration has failed in the 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. The output details are shown below.
Security Indicator
0.2 sec.

ON
Normal
(Immobiliser system is
OFF
operating normally.)
1.8 sec.

0.25 sec. 1 sec.

ON
Code 2-1
OFF

0.25 sec.
0.5 sec.

0.25 sec. 1 sec.

ON
Code 2-2
OFF

0.25 sec.
0.5 sec.

(b) Finish the automatic key code registration mode.
The automatic key code registration mode can be forced to end when at least 1 key code (immobiliser
code) for the master key has been registered.
(1) Turn the ignition switch ON/OFF alternately 5 times within 10 seconds using the already regis-
tered master key.

2005 SIENNA REPAIR MANUAL (RM1163U)

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THEFT DETERRENT & DOOR LOCK - ENGINE IMMOBILIZER SYSTEM

3. REGISTRATION OF ADDITIONAL KEY (ADDITIONAL REGISTRATION)
(a) Register an additional key by using the hand-held tester.
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 it as master key. If neces-
sary, use this master key to register other keys.

2005 SIENNA REPAIR MANUAL (RM1163U)

Author : Date : 3334
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THEFT DETERRENT & DOOR LOCK - ENGINE IMMOBILIZER SYSTEM

Additional Registration

Security Indicator

START
BLINKING
(Until the first
key is inserted.)

Insert the already registered master key in the ignition key cylinder and
turn the ignition switch ON.

OFF

Hand-held tester operation:
1. Select SIENNA from the menu.
2. Select IMMOBILISER. Within 120 sec.
3. Select ID UTILITY.
4. Select TRANSP CODE REG.
After the above operation, proceed to the next step according to the
prompts on the tester screen.
ON Within 20 sec.
after the tester
Remove the master key. instruction

Within 10 sec.
Insert the key to be registered in the ignition key cylinder.

BLINKING

After 60 sec., the key is registered.
(The security indicator goes off.)
OFF

END

HINT:
S A brief outline of procedures for key code registration is shown on this page. For detailed information,
please refer to the prompts on the screen of the hand-held tester.
S When the immobiliser system is operating normally and the key is pulled out, the security indicator
blinks.
NOTICE:
If the key code registration has failed in the 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. The output details are shown in step 2 (New Registration).

2005 SIENNA REPAIR MANUAL (RM1163U)

Author : Date : 3335
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THEFT DETERRENT & DOOR LOCK - ENGINE IMMOBILIZER SYSTEM

4. ERASURE OF KEY CODE
(a) Erase key codes by using the hand-held tester.
HINT:
S All key codes are erased except for the master key which is used for erasing the key codes.
In order to use a key for which the code has been erased, it is necessary to register the key code again.
S Registration operation will be cancelled if each step is not completed within the specified time.

Erasing Key Code

Security Indicator
START
BLINKING
(Until the first
key is inserted.)
Insert the already registered master key in the ignition key cylinder
and turn the ignition switch ON.

OFF
Hand-held tester operation:
1. Select SIENNA from the menu.
2. Select IMMOBILISER. Within 120 sec.
3. Select ID UTILITY.
4. Select TRANSP CODE ERS.
After the above operation, proceed to the next step in accordance
with the prompts on the tester screen.

ON for 1 sec. Within 10 sec.
then OFF after the tester
Remove the master key. indicates

BLINKING

END

2005 SIENNA REPAIR MANUAL (RM1163U)

Author : Date : 3336
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THEFT DETERRENT & DOOR LOCK - ENGINE IMMOBILIZER SYSTEM

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) 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 is for 30 minutes.
(3) Check that the engine starts.

2005 SIENNA REPAIR MANUAL (RM1163U)

Author : Date : 3337

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