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Home >> Hyundai >> 2021 >> Veloster 2.0, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - 2.0L >> Engine Control Module (ECM) >> Repair Procedures >> Removal
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Repair Procedures: Removal

CAUTION:
  • When replacing the ECM, the vehicle equipped with the immobilizer must be performed procedure as below.

[In the case of installing used ECM] 
  1. Perform "ECM Neutral mode" procedure with GDS.

    (Refer to Body Electrical System - "IMMOBILIZER SYSTEM ")

  2. After finishing "ECM Neutral mode", perform "KEY TEACHING " procedure with GDS.

(Refer to Body Electrical System - "IMMOBILIZER SYSTEM ")
[In the case of installing new ECM] 
(Refer to Body Electrical System - "IMMOBILIZER SYSTEM ")
CAUTION:
  • When replacing the ECM, the vehicle equipped with the smart key system (Button start) must be performed procedure as below.

[In the case of installing used ECM] 
  1. Perform "ECM Neutral mode" procedure with GDS.

    (Refer to Body Electrical System - "IMMOBILIZER SYSTEM ")

  2. After finishing "ECM Neutral mode", insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the ECM learns the smart key information automatically.

[In the case of installing new ECM] 
  • Insert the key (or press the start button) and turn it to the IGN ON and OFF position. Then the ECM learns the smart key information automatically.
  1. Turn ignition switch OFF and disconnect the negative (-) battery cable.
  2. Remove the battery.

    (Refer to Engine Electrical System - "BATTERY ")

  3. Disconnect the ECM Connector (A).
    G13055511Courtesy of HYUNDAI MOTOR AMERICA
  4. Remove the mounting bolts (A) and then remove the ECM (B).
    G13055512Courtesy of HYUNDAI MOTOR AMERICA
  5. Remove the ECM (A) after loosening the mounting nuts (4EA) from the bracket.
G13055513Courtesy of HYUNDAI MOTOR AMERICA