Kia Sedona: Repair procedures

Third generation YP (2014-2024) / Kia Sedona YP Service Manual / Body Electrical System / Immobilizer System / Repair procedures

Teaching Procedures

Key Teaching Procedure

Key teaching must be done after replacing a defective PCM (ECM) or when providing additional keys to the vehicle owner.

The procedure starts with a PCM (ECM) request for vehicle specific data (PIN code: 6 digits) from the tester. The "virgin" PCM (ECM) stores the vehicle specific data and the key teaching can be started. The "learnt" PCM (ECM) compares the vehicle specific data from the tester with the stored data. If the data match, the teaching can proceed.

If incorrect vehicle specific data is sent to the PCM (ECM) three times, the PCM (ECM) will reject the request of key teaching for one hour. This duration cannot be shortened by neither disconnecting the battery or any other manipulation. After reconnecting the battery, the delay timer will reset to one hour.

The key teaching is done by ignition on with the key and additional tester commands. The PCM (ECM) stores the relevant data in the EEPROM and in the transponder. Then the PCM (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 PCM (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 already been taught during the same teaching cycle, is recognized by the PCM (ECM). This rejects the key and a message is sent to the tester.

The PCM (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 PCM (ECM) detects different authenticators of a transponder and an PCM (ECM), the key is considered to be invalid.

The maximum number of taught keys is 4.

If an error occurs during the Immobilizer Service Menu, the PCM (ECM) status remains unchanged and a specific fault code is stored.

If the PCM (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 PCM (ECM).

When teaching the 1st key, Smartra registers at the same time.

(1)	PCM (ECM) learnt status.

(2)	PCM (ECM) virgin status. After replacing new "PCM (ECM)", GDS displays that PCM (ECM) is in virgin status in Key Teaching mode. "VIRGIN" status means that PCM (ECM) has never matched with any PIN code before.

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" PCM (ECM). Before first teaching of user password to an PCM (ECM), the status of the password is "virgin" and No limp home function not available.

The teaching is started by turning 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 PCM (ECM) requests for 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 is sent to the PCM (ECM) three times continuously or intermittently, the PCM (ECM) will reject the request to change the password for one hour. This duration cannot be shortened by disconnecting the battery or any other actions. After reconnecting the battery, the delay timer will reset to one hour.

(1)	User password teaching ※ When wrong password is entered, retry from the first step after 10 seconds.

(2)	Changing user password

Limp Home Function

Limp Home By Tester

If the PCM (ECM) detects the fault of the SMARTRA or transponder, the PCM (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 PCM(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 PCM (ECM) via the special tester menu.

Only when the PCM (ECM) is in "learnt" status, the user password status is "learnt" and the user password is correct, the PCM (ECM) will be unlocked for a period of time (30 sec.). The engine can only be started during this time. Engine cannot be started after this time has elapsed.

If the wrong user password is sent, the PCM (ECM) will reject the request of limp home for one hour. Disconnecting the battery or any other action cannot shorten this duration. After connecting the battery to the PCM (ECM), the delay timer will reset to one hour.

Limp Home By Ignition Key

The limp home can be activated also by the ignition key. The user password can be input to the PCM (ECM) by a special sequence of ignition on/off.

Only when the PCM (ECM) is in "learnt" status, the user password status is "learnt" and the user password is correct, the PCM (ECM) will be unlocked for a period of time (30 sec.).

The engine can be started during this time. Engine cannot be started after this time has elapsed. After a new password is entered, the timer (30 sec.) will reset.

After ignition off, the PCM (ECM) is locked if the timer has elapsed 8 seconds. For the next start, the input of the user password is requested again.

Replacement

Problems And Replacement Parts:

Problem	Part set	GDS required?
Lost all keys	Blank key (4)	YES
Antenna coil unit does not work	Antenna coil unit	NO
PCM(ECM) does not work	PCM(ECM)	YES
Ignition switch does not work	Ignition switch with Antenna coil unit	YES
Unidentified vehicle specific data occurs	Key, PCM(ECM)	YES
SMARTRA unit does not work	SMARTRA unit	YES

Replacement Of PCM(ECM) And Smartra

In case of a defective PCM (ECM), the unit has to be replaced with a "virgin" or "neutral" PCM (ECM). All keys have to be taught to the new PCM (ECM). Keys, which are not taught to the PCM (ECM), are invalid for the new PCM (ECM) (Refer to key teaching procedure). The vehicle specific data have to be left unchanged due to the unique programming of transponder.

In case of a defective SMARTRA, the smartra needs to be teached. If an old device is replaced by a new SMARTRA device, the smartra needs to be teached.

1.	Things to remember before a replacement (PCM(ECM))

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.

PCM (ECM) Neutralization

The PCM(ECM) can be set to the "neutral" status by a tester.

A valid ignition key is inserted and after ignition on is recorded, the PCM (ECM) requests the vehicle specific data from the tester. The communication messages are described in "Neutral Mode". After successfully receiving the data, the PCM (ECM) is neutralized.

The PCM (ECM) remains locked. Neither the limp home mode nor the "twice ignition on" function, is accepted by the PCM (ECM).

The teaching of keys follows the procedure described for the virgin PCM(ECM). The vehicle specific data have to be unchanged due to the unique programming of the transponder. If data should be changed, new keys with a virgin transponder are requested.

This function is for neutralizing the PCM (ECM) and Key.

E.g.) when keys are lost, Neutralize the PCM (ECM) and then teach keys.

(Refer to the Things to do when Key & PIN Code the PCM(ECM) can be set to the "neutral" status by a scanner. If wrong vehicle specific data have been sent to SMATRA three times continuously or intermittently, the SMATRA will reject the request to enter neutral mode for one hour. Disconnecting the battery or other manipulation cannot reduce this time. After connecting the battery the timer starts again for one hour.

•	Neutralization setting condition

–	When PCM(ECM) is in "Learnt" status regardless of user password "Virgin or Learnt"

–	Input correct PIN code by scanner.

–	Neutralizing meaning . : PIN code (6) & user password (4) deletion. : Locking of PCM(ECM) (except key teaching permission)

•	Neutralization is defined by:

–	PIN Code (6) & User P/Word (4) deletion

–	Locking of EMS (except for Key Learning permission)

Neutralizing SMARTRA

The EMS can be set to the "neutral" status by tester.

Ignition key (regardless of key status) is inserted after IGN ON. If the correct vehicle password is received from GST, SMARTRA can be neutralized. SMARTRA can be neutralized if DPN is the same as the value inputted by GST.

When the SMARTRA is in neutral status, the EMS stays locked. It cannot be started by performing "ignition twice".

When changing the vehicle password, new virgin transponder must only be used. And in case of virgin key, it can be used after learnng the key of vehicle password.

If wrong vehicle specific data have been sent to SMATRA three times continuously or intermittently, the SMATRA will reject the request to enter neutral mode for one hour. Disconnecting the battery or other manipulation cannot reduce this time. After connecting the battery the timer starts again for one hour.

•	Neutralizing Setting condition :

–	In case of "SMARTRA status", "Learned"

–	Input correct Pin code by tester

•	Neutralizing meaning :

–	Vehicle password(DPN Code) & SEK Code deletion.

–	Permission of New DPN Learning.

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