Toyota Tundra Service Manual: Registration

REGISTRATION

PROCEDURE

1. NOTICES WHEN REGISTRATION PROCEDURE

NOTICE:

Make sure to check the items listed below before proceeding with troubleshooting.

• Do not perform "Immobiliser Code Reset" (all key ID erasure) until all of the malfunctions and symptoms have been confirmed and resolved. If all key ID erasure is performed without confirming or resolving malfunctions, key registration will be unable to be performed, resulting in unnecessary part replacement.

2. DESCRIPTION OF CODE REGISTRATION

(a) The door control transmitter assembly has 2 codes: the key code (immobiliser code) and the wireless code. Both of these codes need to be registered. For the wireless code registration procedures, refer to Wireless Door Lock Control System.

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3. KEY REGISTRATION PROCEDURES WHEN ADDING OR REPLACING KEY OR WHEN KEY IS LOST

HINT:

• The following procedures require the use of the Techstream:
  • - New key code registration
  • - Additional key code registration
  • - Key code erasure
• A maximum of 5 key codes can be registered.

4. PART REPLACEMENT AND KEY REGISTRATION PROCEDURES

(a) The following table shows ECU replacement and key registration procedures for cases in which an ECU has been determined to be malfunctioning during troubleshooting of the engine immobiliser system.

HINT:

• The following procedures require the use of the Techstream:
  • - New key code registration
  • - Additional key code registration
  • - Key code erasure
• A maximum of 5 key codes can be registered.

5. KEY REGISTRATION (PROCEDURE "A")

(a) New key code registration (Procedure "A"):

NOTICE:

Make sure that no key codes are registered in the transponder key ECU assembly.

HINT:

• In this mode, a maximum of 2 master key codes can be registered. The master keys can be registered in any order because the transponder key ECU assembly can distinguish between different types of door control transmitter assemblies.
• New key codes must be registered with the battery connected. The ignition switch can be either ON or off.
• When a new transponder key ECU assembly is installed, key codes must be registered in the transponder key ECU assembly.

HINT:

• When the engine immobiliser system is operating normally and the door control transmitter assembly is pulled out, the security indicator light blinks continuously.
• If new key code registration fails, code 2-1 will be output through the security indicator light. Trying to re-register an already registered door control transmitter assembly will cause code 2-2 to be output when the door control transmitter assembly is inserted. If the number of registered key codes exceeds the maximum limit, code 2-3 will be output through the security indicator light. The output details are shown below.

(b) End automatic key code registration mode:

Automatic key code registration mode can be forced to end when at least 1 key code (immobiliser code) has been registered as the master key.

HINT:

Follow the instruction on the Techstream screen to end new key code registration mode.

6. KEY REGISTRATION (PROCEDURE "B")

(a) Additional registration (Procedure "B"):

HINT:

• A maximum of 5 master key codes can be re-registered.
• Additional key code registration will end if any step is not completed within the specified time.
• If the ignition key cylinder or the key cylinder set is replaced, remove the transmitter module from the original master key. Then install the transmitter module to a new key and use the new key as the master key. If necessary, use this master key to register other door control transmitter assemblies.

NOTICE:

When the ignition key cylinder has been replaced, locking and unlocking of doors is possible with the new master key transmitter module (removed 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 battery in the new master key transmitter module fails, the original master key can be used to lock and unlock doors through the door key cylinder.

HINT:

• A brief outline of a key code registration procedure is shown above. For detailed information, refer to the Techstream screen.
• When the engine immobiliser system is operating normally and the door control transmitter assembly is pulled out, the security indicator light blinks continuously.
• If key code registration fails during additional key code registration, code 2-1 will be output through the security indicator light. Trying to re-register a previously registered door control transmitter assembly will cause code 2-2 to be output when the door control transmitter assembly is inserted into the ignition key cylinder. If the number of registered key codes exceeds the maximum limit, code 2-3 will be output through the security indicator light. Details of code output are shown in procedure "A".

7. KEY REGISTRATION (PROCEDURE "C")

(a) Key code erasure (Procedure "C"):

HINT:

• Performing this procedure will erase all key codes except for the master key which is used for erasing the key codes. In order to use a door control transmitter assembly whose code has been erased, a new key code must be registered.
• This procedure will be canceled if each step is not completed within the specified time.

HINT:

• A brief outline of a key code registration procedure is shown above. For detailed information, refer to the Techstream screen.
• When the engine immobiliser system is operating normally and the door control transmitter assembly is pulled out, the security indicator light blinks continuously.

8. KEY REGISTRATION (PROCEDURE "D")

(a) All key code erasure (Procedure "D"):

HINT:

• To perform this procedure, at least 1 door control transmitter assembly should be registered to the transponder key ECU assembly.
• This procedure can be performed using either a registered or unregistered door control transmitter assembly.

HINT:

• A brief outline of a key code registration procedure is shown above. For detailed information, refer to the Techstream screen.
• When the engine immobiliser system is operating normally and the door control transmitter assembly is pulled out, the security indicator light blinks continuously.

9. KEY REGISTRATION (PROCEDURE "E")

(a) ECU communication ID registration (Procedure "E"):

NOTICE:

• When the transponder key ECU assembly is replaced, the ECU communication ID of the ECM must be registered into the transponder key ECU assembly to match their ECU communication IDs.
• The engine cannot be started unless the ECU communication IDs match.
• Do not turn the ignition switch from ON to off 20 times or more before registering the ECU communication ID. Turning the ignition switch from ON to off 20 times or more will result in the engine not starting unless the transponder key ECU assembly is replaced with a new one.
• Do not disconnect the cable from the negative (-) battery terminal while performing registration.
• Do not operate any electrical loads during registration. If the battery becomes depleted during registration, registration may not be able to be performed again.
• After registration, turning the ignition switch to the START position may not start the engine on the first try. If so, turn the ignition switch to ON again.
• After the engine is started, clear DTC B2799 (code for ECM immobiliser communication error) by either of the following:

  - Using the Techstream

  - Disconnecting the battery for 30 seconds

(1) Using SST, connect terminals TC and CG of the DLC3. SST: 09843-18040

*1 SST *a Front view of DLC3

(2) Turn the ignition switch to ON and leave the vehicle as is for 30 minutes.

NOTICE:

Do not open and close any door. If a door is opened and closed, start the registration over again from the procedure 1.

HINT:

Do not start the engine.

(3) Turn the ignition switch off and disconnect SST from terminals TC and CG.

(4) Check that the engine can be started and runs for 3 seconds or more.

10. KEY REGISTRATION (PROCEDURE "F")

(a) ECU communication ID registration (Procedure "F"):

NOTICE:

The ECU communication ID should be registered when the ECM and transponder key ECU assembly are replaced or when the ECM only is replaced in order to match the ECU communication ID.