2005 Honda Pilot EXFACTORY OEM SERVICE PROCEDURE

PCM Replacement

  1. Connect the HDS to the data link Connector (DLC) (A) located under the driver's side of the dashboard.
    Fig 1: Locating Data Link Connector (DLC)
    G04546056Courtesy of AMERICAN HONDA MOTOR CO., INC.
  2. Turn the ignition switch ON (II).
  3. Select the INSPECTION MENU with the HDS.
  4. Do the TP LEARNING CHECK in the ETCS TEST.
  5. Turn the ignition switch OFF.
  6. Jump the SCS line with the HDS.
  7. Remove the cover (D), from the PCM (E).
    Fig 2: Removing Cover (D), From PCM (E)
    G04546057Courtesy of AMERICAN HONDA MOTOR CO., INC.
  8. Disconnect PCM Connectors A, B, and C.
    NOTE: PCM Connectors A, B, and C have symbols (A= square, B= triangle, C= circle) embosed on them for identification.
  9. Remove the bolts (F), then remove the PCM (E).
  10. Install the PCM in the reverse order of removal.
  11. Open the SCS with the HDS.
  12. Turn the ignition switch ON (II).
    NOTE: DTC P0630 "VIN Not Programmed or Mismatch" will be stored because VIN has not been programmed into the PCM, but ignore it and continue this procedure.
  13. Input the VIN to the PCM with the HDS.
  14. Rewrite the immobilizer code with the PCM replacement procedure in the HDS; it allows you to start the engine.
  15. Reset the PCM with the HDS.
  16. Do the CKP pattern learn procedure (see CKP PATTERN CLEAR/CKP PATTERN LEARN ).
  17. Do the idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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