C. Immobilizer Ignition Key Registration
This section contains procedures for registering ignition keys for the electronic immobilizer system found on certain 2003 model year Mitsubishi vehicles.^ (1) ENCRYPTED CODE REGISTRATION METHOD:
The ENCRYPTED CODE REGISTRATION METHOD which requires the use of the MUT-II or MUT-III scan tool and the vehicle-specific password, should be used when none or only one of the previously registered transponder keys is available for re-registration or if any previously registered key(s) are lost or stolen and you are programming all new keys.
^ (2) ADDITIONAL KEY REGISTRATION METHOD:
For 2002-03 model years, the Immobilizer ECU will allow registration of additional ignition keys using the new ADDITIONAL KEY REGISTRATION METHOD. By using this method, the scan tool and a password are not needed if at least TWO originally registered keys are available.
NOTE:
If you have two registered keys available, but other key(s) are lost or stolen, use the ENCRYPTED CODE REGISTRATION METHOD to re-register all keys.
(1) ENCRYPTED CODE REGISTRATION METHOD Using Scan Tool (ONE OR NO REGISTERED KEYS ARE AVAILABLE OR KEY(S) OR LOST OR STOLEN)
Required Special Tool: MB991496 Scan Tool (MUT-II) with correct ROM-Pack or MB991956 (MUT-III Scan Tool/Laptop).
CAUTION
Because registering the encrypted codes is done after all previously-registered codes have been erased, you must have available all keys that have previously been registered to the vehicle.
If the ignition key, Immobilizer-ECU, ECM*
Moreover, when the immobilizer-ECU has been replaced, you will need to use scan tool MB991496 to register the immobilizer-ECU and input the vehicle password (secret code).
POINTS TO NOTE DURING OPERATION
1. If none of the functions can be used, check the diagnostic trouble codes and, after carrying out any necessary repairs, repeat the operation.
2. If an incorrect password for key registration is input five times in a row, the immobilizer-ECU judges that an unauthorized operation is being attempted. Start-prevention mode will be set, and engine operation will stop, and all special functions will be disabled.
If the ignition switch is turned to "ON" position and left in that position for approximately 20 minutes, "Unauthorized operation, start-prevention mode" will be cancelled.
A. KEY REGISTRATION USING MUT-II SCAN TOOL - ENCRYPTED CODE METHOD
CAUTION
To prevent damage to scan tool MB991496, always turn the ignition switch to "LOCK" (OFF) position before connecting or disconnecting scan tool MB991496.
FUNCTION SELECTION
1. Connect scan tool MB991496 to data link connector (16 pin).
2. Turn the ignition switch to "ON" position.
3. This menu is displayed if "SPECIAL FUNCTION" is selected from the immobilizer function menu. Select "Key ID Registr" from the menu, then proceed with the following Key ID Register steps.
NOTE:
The functions displayed will vary depending on the vehicle model.
KEY ID REGISTER
NOTE:
Using the key ID register function will cause all key IDs that have been previously registered in the immobilizer-ECU to be erased. All keys need to be registered. Those which have been registered before should be on hand before using this function.
NOTE:
If registering more than one key, do not disconnect scan tool MB991496 during the registration process.
NOTE:
After registering key IDs, check that the engine can be started using all of the keys that have been registered. If the engine will not start, refer to Immobilizer System Diagnosis in section 54 of the service manual.
1. Connect the MUT-II to DLC. Select Immobilizer, then select "SPECIAL FUNCTION." Select "key ID registr."
2. Input the 4-digit password (NOT the Immobilizer Override Code). Each vehicle has an assigned password which can be found on MEDIC's Diamond Net function, on the Diamond Dealer Link (DDL), or the Mitsubishi Dealer Link (MDL):
^ MEDIC
Click or touch the DIAMOND NET button. When the menu appears, choose number 10, "Key Registration Password".
^ DDL
Click on: Service Tech/Warranty -> Warranty Systems, then when the session begins and the menu appears, choose number 10, "Key Registration Password".
^ MDL
Click on: Service -> Systems -> Vehicle Information -> Key Registration Password.
Use the "UP" and "DOWN" keys to change the current password digit to a value between 0 and 9. Use the "LEFT" and "RIGHT" keys to move to a different password digit. Press the "YES" key to accept the password.
NOTE:
Four separate digits must be input to make up the password.
3. If an incorrect password is input five times in a row, this screen is displayed and the immobilizer-ECU switches to "Unauthorized operation, start-prevention mode."
4. Insert the key to be registered into the ignition switch. Turn the ignition switch to the "ON" position. Press the "YES" key to start key ID registration.
5. This message will be displayed when the key ID registration is successful. If an error occurs during key ID registration, the message "Can't execute" will be displayed. If the key has already been registered, "Key ID has been registered" will be displayed.
6. The number of keys currently registered will be displayed. To register an additional key, replace the ignition key with the next key to be registered within five seconds and then press the "YES" key. Key ID registration screen will be displayed, then register another key.
NOTE:
A maximum of eight different keys can be registered.
7. If key ID registration is complete, press the "NO" key.
8. This completes the registration operation. Turn the ignition switch "LOCK" (OFF) and leave it off for approximately ten seconds.
9. Check that the engine can be started with each of the ignition keys.
10. Check that the immobilizer system DTC and MFI system DTC do not reset.
11. Turn the ignition switch to "LOCK" (OFF) position.
12. Disconnect MUT-II scan tool.
B. KEY REGISTRATION USING MUT-III (LAPTOP PC) SCAN TOOL - ENCRYPTED CODE METHOD
CAUTION
To prevent damage to scan tool MB991956, always turn the ignition switch to "LOCK" (OFF) position before connecting or disconnecting scan tool MB991956.
NOTE:
^ Before registration, check that no DTC is set. If a DTC is set, resolve the problem beforehand.
^ Using the key ID register function will cause all previously-set key IDs to be erased from the immobilizer ECU. All keys need to be registered. Those which have been registered before should be on hand before using this function.
^ If registering more than one key, do not disconnect the scan tool halfway through the registration process.
^ After all keys are registered, make sure the engine can be started with all the new registered keys. If the engine will not start, refer to Immobilizer System diagnosis in Group 54 of the vehicle service manual.
1. Connect the scan tool MB991956 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "Interactive Diagnosis" from the start-up screen.
4. Select "System select".
5. Choose "IMMOBILIZER" from the "POWER TRAIN" tab.
6. Choose "Special Function" from the "IMMOBILIZER" screen.
7. Choose "Key registration" from the "Special Function" screen.
8. Input the 4-digit password (NOT the Immobilizer Override Code), then click the check mark icon. Each vehicle has an assigned password which can be found on MEDIC's Diamond Net function, on the Diamond Dealer Link (DDL), or the Mitsubishi Dealer Link (MDL):
^ MEDIC
Click or touch the DIAMOND NET button. When the menu appears, choose number 10, "Key Registration Password"
^ DDL
Click on: Service Tech/Warranty -> Warranty Systems, then when the session begins and the menu appears, choose number 10, "Key Registration Password".
^ MDL
Click on: Service -> Systems -> Vehicle Information -> Key Registration Password.
9. If the key ID was registered successfully, "Progress" indication will turn active (gray). Then the registration process completes. If the key ID failed to be registered, "In-Complete" indication will turn active (gray).
10. The number of keys currently registered will be displayed. To register an additional key, replace the ignition key with the next key to be registered within five seconds. The Key ID registration screen will display, then register another key.
NOTE:
A maximum of eight keys can be registered to a vehicle.
11. This completes the registration operation. Turn the ignition switch to "LOCK" (OFF) and leave it off for approximately ten seconds.
12. Check that the engine can be started with all of the registered ignition keys.
13. Check that the immobilizer system DTC and MFI system DTC did not set.
14. If no DTC is shown, terminate the MUT-III.
15. Turn the ignition switch to "LOCK" (OFF).
16. Disconnect the MUT-III scan tool MB991956.
(2) REGISTRATION OF ADDITIONAL KEYS WITH SCAN TOOL
A. REGISTRATION OF ADDITIONAL KEYS USING $CAN TOOL MB991496 (MUT-II)
An additional key can be registered with the scan tool while keeping all existing key data.
CAUTION
To prevent damage to scan tool MB991496, always turn the ignition switch to "LOCK" (OFF) position before connecting or disconnecting scan tool MB991496.
NOTE:
To register additional keys with the scan tool, two registered keys must be available.
1. Connect scan tool MB991496 to data link connector (16-pin).
2. Turn the ignition switch to the "ON" position.
3. At "System Select" press "YES".
4. Select "Immobilizer", then press "YES".
5. Select "Special Func,", then press "YES". If DTC 11 exists, "Can't execute" will be displayed. Check for DTC 11. Refer to Group 54 in the service manual to diagnose DTC 11.
6. Select "Add key ID ref," then press "YES".
7. Press the "YES" key to start key ID registration.
8. This will be displayed when the add key ID registration is successful. If an error occurs during key ID registration, the message "Can't execute" will be displayed. If the key has already been registered, "Key ID has been registered" will be displayed.
9. The number of keys currently registered will be displayed. To register an additional key, replace the ignition key with the next key to be registered within five seconds and then press the "YES" key. Key ID registration screen will be displayed, then register another key.
If key ID registration is complete, press the "NO" key.
NOTE:
A maximum of eight keys can be registered.
10. This completes the registration operation. Turn the ignition switch "LOCK" (OFF) and leave it off for approximately ten seconds.
11. Check that the engine can be started with each of the registered ignition keys.
12. Check that the immobilizer system DTC and MFI system DTC did not set.
13. Turn the ignition switch to "LOCK" (OFF) position.
14. Disconnect the MUT-II scan tool.
B. REGISTRATION OF ADDITIONAL KEYS USING SCAN TOOL MB991956 (MUT-III)
An additional key can be registered with the scan tool while keeping all existing key data.
CAUTION:
To prevent damage to scan tool MB991496, always turn the ignition switch to "LOCK" (OFF) position before connecting or disconnecting scan tool MB991496.
NOTE:
To register additional keys with the scan tool, two registered keys must be available.
1. Connect the scan tool MB991956 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "Interactive Diagnosis" from the start-up screen.
4. Select "System select".
5. Choose "IMMOBILIZER" from the "POWER TRAIN" tab.
6. Choose "Special Function" from the "IMMOBILIZER" screen.
7. Choose "Transponder ID addition" from "Special Function" screen.
8. Input the password on the "Transponder ID addition" screen, and then click the check mark icon.
9. If an additional registration is made successfully, the screen will ask if another key is registered or not. If the third ignition key is registered, remove the key, which has been registered. Then insert the third key within five seconds, and then turn it to the ON position.
10. Register the additional ignition key according to step 6 above. The number of the registered ignition keys are shown on "The number of registered key" screen.
NOTE:
A maximum of eight keys can be registered.
11. This completes the registration operation. Turn the ignition switch "LOCK" (OFF) and leave it off for approximately ten seconds.
12. Check that the engine can be started with each of the registered ignition keys.
13. Check that the immobilizer system DTC and MFI system DTC did not set.
14. If no DTC is shown, terminate the MUT-III.
15. Turn the ignition switch to "LOCK" (OFF) position.
16. Disconnect MUT-III scan tool.
(3) ADDITIONAL KEY REGISTRATION METHOD WITHOUT SCAN TOOL AND PASSWORD (AT LEAST TWO [2] REGISTERED KEYS MUST BE AVAILABLE)
The Immobilizer system in 2000 and 2001 model year vehicles requires that ALL ignition keys, both existing and new, must be registered with the Immobilizer ECU using the scan tool and a password, if an ignition key is lost or if additional keys are needed. For 2002 & 2003 model years, the Immobilizer ECU will allow registration of additional ignition keys using the new ADDITIONAL KEY REGISTRATION METHOD. By using this method, the MUT-II or MUT-III scan tool and a password are not needed if at least TWO originally registered keys are available.
CAUTION
For customer security, if any originally registered key is lost or stolen, the current MUT-II or MUT-III scan tool Encrypted Code key registration procedures should be used to register new keys and re-register the remaining original key(s), even though two original keys might be available.
NOTE:
At least TWO originally registered keys must be available to use the following procedures.
1. Turn the ignition switch ON with the first key (key-A). This key must be one of the originally registered ignition keys.
2. If the first key is correctly registered, the Immobilizer-ECU will go into waiting status for the second key (key-B). The ignition must be in the ON position with key-A inserted for at least 5-seconds for the ECU to go into waiting status.
3. Turn the ignition switch to OFF, remove key-A, then insert key-B. Turn the ignition switch to ON, using key-B within 7-seconds.
NOTE:
Key-B must be an originally-registered key. If there is no second originally registered key, refer to section C (1), ENCRYPTED CODE REGISTRATION METHOD, of this bulletin or the appropriate service manual and register all keys using the current scan tool/password method.
4. If both key-A and key-B are correctly registered, the Immobilizer indicator lamp will blink twice. This signals that the Immobilizer-ECU has entered the ADDITIONAL KEY REGISTRATION MODE.
5. Turn the ignition switch to OFF. Insert the new key to be registered into the ignition switch and turn the switch ON within 7-seconds. The new key is now registered to the vehicle. The indicator lamp will illuminate for 3-seconds to signal the new key is registered. If an error occurs, the indicator lamp will blink 3-times.
NOTE:
Key registration must be completed within 30-seconds after the indicator lamp stops blinking.
6. To register more keys, repeat step 5. A maximum of eight (8) keys can be registered to a vehicle.
7. After all keys are registered, start the engine with each key to make sure all keys are registered properly.
ADDITIONAL NOTES:
^ ADDITIONAL KEY REGISTRATION MODE will be cancelled if any of the following occur:
- The ignition switch is kept ON for over 30-seconds.
- When the engine control relay is OFF
- The Immobilizer ECU starts communication with the scan tool.
^ Any newly registered key can start the engine only after that key turns the ignition switch OFF and the engine control relay is OFF. Turning the ignition switch ON again, will then allow the engine to start with the new key.
^ The Immobilizer Override function does not operate when the Immobilizer-ECU is in key registration mode.
^ 2002 & 2003 model year vehicles use a new-style transponder key blank. The key blank for previous model years (2000 & 2001) Immobilizer equipped vehicles will not work in 2002 & 2003 model year vehicles.