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Home >> Honda >> 2003 >> Element EX, 2.4 YH2, Automatic >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel And Emissions Systems >> General Troubleshooting Information >> How to Substitute the ECM/PCM

How to Substitute the ECM/PCM

  1. Connect the HDS or the Honda interface module (HIM) to the data link connector (DLC) (A) located under the driver's side of the dashboard.
    Fig 1: Locating Data Link Connector (DLC)
    G03677422Courtesy of AMERICAN HONDA MOTOR CO., INC.
  2. Turn the ignition switch ON (II).
  3. Turn the ignition switch OFF.
  4. Jump the SCS line with the HDS.
  5. Remove the passenger's dashboard under cover (see PASSENGER'S DASHBOARD UNDER COVER REMOVAL/INSTALLATION ), the passenger's kick panel (see TRIM REMOVAL/INSTALLATION - DOOR AREAS ), and the glove box (see GLOVE BOX REMOVAL/INSTALLATION ).
  6. Cut the plastic cross brace in the glove box opening with diagonal cutters in the area shown, and discard it.
    Fig 2: Discarding Plastic Cross Brace In Glove Box Opening Diagonal Cutters
    G03677423Courtesy of AMERICAN HONDA MOTOR CO., INC.
  7. Remove the relays (A), then remove the bolts (B) and the glove box frame (C).
    Fig 3: Removing Bolts And Glove Box Frame
    G03677424Courtesy of AMERICAN HONDA MOTOR CO., INC.
  8. Remove the gray 20P ECM/PCM wire harness connector (A) from the ECM/PCM mounting bracket.
    Fig 4: Removing Gray 20P ECM/PCM Wire Harness Connector From ECM/PCM Mounting Bracket And Torque Specifications
    G03677425Courtesy of AMERICAN HONDA MOTOR CO., INC.
  9. Disconnect the ECM/PCM connectors (B).
  10. Remove the ECM/PCM mounting bolt (C) and the bracket.
  11. Remove the nuts (D), then remove the ECM/PCM (E).
  12. Install the ECM/PCM in the reverse order of removal.
  13. Open the SCS line with the HDS.
  14. Turn the ignition switch ON (II).
    NOTE: For 2005-2006 models: DTC P0630 "VIN Not Programmed or Mismatch" will be stored because VIN has not been programmed into the ECM/PCM; ignore it, and continue this procedure.
  15. Input the VIN to the ECM/PCM with the HDS.
  16. Rewrite the immobilizer code with the ECM/PCM replacement procedure in the HDS; it allows you to start the engine.
  17. Reset the ECM/PCM with the HDS.
  18. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).
  19. Do the CKP pattern clear/CKP pattern learn procedure.
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