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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Control System (Pr25DD) (3 Of 3)) >> Removal And Installation >> ECM >> ECM : Removal & Installation >> Removal

ECM : Removal & Installation: Removal

WARNING: This page is about a different variant/trim than selected.
CAUTION:
  • Perform ADDITIONAL SERVICE WHEN REPLACING ECM. Refer to Work Procedure .
  • When replacing the ECM, a new ECM must be used. The functions controlled by the ECM do not operate properly if an ECM from another vehicle is used.
  • Perform "ELECTRIC INTAKE VALVE TIMING CONTROL LEARNING". Refer to Work Procedure .
  1. Remove the air cleaner and air duct. Refer to AIR CLEANER AND AIR DUCT : Removal & Installation .
  2. Remove the battery. Refer to 12V BATTERY : Removal & Installation .
  3. Disconnect the harness connectors from the ECM. Refer to Component Description (lever locking type).
  4. Remove the engine harness retainer bolt (A).
    GNSAWBIA0330Z-330Courtesy of NISSAN NORTH AMERICA, INC.
  5. Release the engine harness retainer clip (at battery tray).
  6. Remove the ECM bolts from the battery tray.
  7. Remove the ECM and brackets as an assembly.
  8. Remove the nuts and ECM from the brackets (if necessary).