Replacement

Problem	Part set	Scan tool required?
All keys have been lost	Blank key (4)	YES
Antenna coil unit does not work	Antenna coil unit	NO
ECM does not work	ECM	YES
Ignition switch does not work	Ignition switch with Antenna coil unit	YES
Unidentified vehicle specific data occurs	Key, ECM	YES
Immobilizer unit does not work	Immobilizer unit	YES

1.	Things to remember before a replacement (ECM)

2.

Things to remember before a replacement (Keys & Additional registration) 1. When there is only one key registered and you wish to register another key, you need to re-register the key which was already registered. 2. When the key #1 is registered and master key #2 is not registered, Put the key #1 in the IG/ON or the start position and remove it. The engine can be started with the unregistered key #2. (Note that key #2 must be used within 10 seconds of removing key #1) 3. When the key #1 is registered and key #2 is not registered, put the unregistered master key #2 in the IG/ON or the start position. The engine cannot be started even with the registered key #1. 4. When you inspect the immobilizer system, refer to the above paragraphs 1, 2 and 3. Always remember the 10 seconds zone. 5. If the pin code & password are entered incorrectly on three consecutive inputs, the system will be locked for one hour. 6. Be cautious not to overlap the transponder areas. 7. Problems can occur at key registration or vehicle starting if the transponders should overlap.

• Neutralizing setting condition - In case of ECM status "Learnt" regardless of user password "Virgin or Learnt" - Input correct PIN code by scanner. - Neutralizing meaning . : PIN code (6) & user password (4) deletion. : Locking of ECM (except key teaching permission) • Neutralizing meaning: - PIN Code(6) & User P/Word(4) deletion - Locking of EMS(except Key Learning permission)

Teaching Procedures

1.

Key Teaching Procedure Key teaching must be done after replacing a defective ECM or when providing additional keys to the vehicle owner. The procedure starts with an ECM request for vehicle specific data (PIN code: 6digits) from the tester. The "virgin" ECM stores the vehicle specific data and the key teaching can be started. The "learnt" ECM compares the vehicle specific data from the tester with the stored data. If the data are correct, the teaching can proceed. If incorrect vehicle specific data have been sent to the ECM three times, the ECM will reject the request of key teaching for one hour. This time cannot be reduced by disconnecting the battery or any other manipulation. After reconnecting the battery, the timer starts again for one hour. The key teaching is done by ignition on with the key and additional tester commands. The ECM stores the relevant data in the EEPROM and in the transponder. Then the ECM runs the authentication required for confirmation of the teaching process. The successful programming is then confirmed by a message to the tester. If the key is already known to the ECM from a previous teaching, the authentication will be accepted and the EEPROM data are updated. There is no changed transponder content (this is impossible for a learnt transponder). The attempt to repeatedly teach a key, which has been taught already during the same teaching cycle, is recognized by the ECM. This rejects the key and a message is sent to the tester. The ECM rejects invalid keys, which are presented for teaching. A message is sent to the tester. The key can be invalid due to faults in the transponder or other reasons, which result from unsuccessful programming of data. If the ECM detects different authenticators of a transponder and an ECM, the key is considered to be invalid. The maximum number of taught keys is 8 If an error occurs during the Immobilizer Service Menu, the ECM status remains unchanged and a specific fault code is stored. If the ECM status and the key status do not match for teaching of keys, the tester procedure will be stopped and a specific fault code will be stored at ECM. When teaching the 1st key, Immobilizer regists at the same time. (1) ECM learnt status. (2) ECM virgin status. After replacing new "ECM" scan tool displays that ECM is virgin status in Key Teaching mode. "VIRGIN" status means that ECM has not matched any PIN code before.

1.

User Password Teaching Procedure The user password for limp home is taught at the service station. The owner of the vehicle can select a number with four digits. The user password teaching is only accepted by a "learnt" ECM. Before first teaching of user password to an ECM, the status of the password is "virgin" No limp home function is possible. The teaching is started by ignition on, with a valid key(learnt key) and sending the user password by tester. After successful teaching, the status of the user password changes from "virgin" to "learnt" The learnt user password can also be changed. This can be done if the user password status is "learnt" and the tester sends authorization of access, either the old user password or the vehicle specific data. After correct authorization, the ECM requests the new user password. The status remains "learnt" and the new user password will be valid for the next limp home mode. If wrong user passwords or wrong vehicle specific data have been sent to the ECM three times continuously or intermittently, the ECM will reject the request to change the password for one hour. This time cannot be reduced by disconnecting the battery or any other actions. After reconnecting the battery, the timer starts again for one hour.

2.	User password teaching ※ In case of putting wrong password, retry from first step after 10 seconds.

3.	User password changing

Limp Home Function

1.

Limp Home By Tester If the ECM detects the fault of the Immobilizer or transponder, the ECM will allow limp home function of the immobilizer. Limp home is only possible if the user password (4 digits) has been given to the ECM before. This password can be selected by the vehicle owner and is programmed at the service station. The user password can be sent to the ECM via the special tester menu. Only if the ECM is in status "learnt" and the user password status is "learnt" and the user password is correct, the ECM will be unlocked for a period of time (30 sec.). The engine can only be started during this time. After the time has elapsed, engine start is not possible. If the wrong user password is sent, the ECM will reject the request of limp home for one hour. Disconnecting the battery or any other action cannot reduce this time. After connecting the battery to the ECM, the timer starts again for one hour.

2.

Limp Home By Ignition Key The limp home can be activated also by the ignition key. The user password can be input to the ECM by a special sequence of ignition on/off. Only if the ECM is in status "learnt" and the user password status is "learnt" and the user password is correct, the ECM will be unlocked for a period of time (30 sec.). The engine can be started during this time. After the time has elapsed, engine start is not possible. After a new password has been input, the timer (30 sec.) will start again. After ignition off, the ECM is locked if the timer has elapsed 8 seconds. For the next start, the input of the user password is requested again.