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Neutralizing Of ECM

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 at "Neutral Mode" After successfully receiving the data, the PCM (ECM) is neutralized.

The 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. (Ex) when lost key, Neutralize the PCM (ECM) 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 the 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.

NOTE:
  • Neutralizing setting condition
    • In case of PCM (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)
Fig 1: EMS Function Chart
G06873784Courtesy of HYUNDAI MOTOR CO.
Fig 2: Screen Display - Select System
G06873785Courtesy of HYUNDAI MOTOR CO.
Fig 3: Screen Display - Neutral Mode
G06873786Courtesy of HYUNDAI MOTOR CO.
Fig 4: Screen Display - Insert Pin Code
G06873787Courtesy of HYUNDAI MOTOR CO.
Fig 5: Screen Display - Pin Code
G06873788Courtesy of HYUNDAI MOTOR CO.
Fig 6: Screen Display - Pin Code Confirmation
G06873789Courtesy of HYUNDAI MOTOR CO.
Fig 7: Screen Display - Test Completed
G06873790Courtesy of HYUNDAI MOTOR CO.
Fig 8: Screen Display - Pin Code Message
G06873791Courtesy of HYUNDAI MOTOR CO.
Fig 9: Screen Display - ECU Status
G06873792Courtesy of HYUNDAI MOTOR CO.
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