Substituting the PCM

Special Tools Required 

• Honda Diagnostic System (HDS) tablet tester
• Honda Interface Module (HIM) and an iN workstation with the latest HDS software version
• HDS pocket tester
• GNA600 and an iN workstation with the latest HDS software version
• MVCI unit with the latest control module (CM) update software installed

Any one of the above updating tools can be used.

1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
   Fig 1: Identifying Data Link Connector (DLC)

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
2. Turn the ignition switch to ON (II).
3. Make sure the HDS communicates with the PCM and all other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting (see DLC CIRCUIT TROUBLESHOOTING ).
4. Turn the ignition switch to LOCK (0).
5. Jump the SCS line with the HDS.
6. Remove the cover (D).
   Fig 2: Disconnecting PCM Connectors With Torque Specifications (Keihin PCM)

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
   Fig 3: Disconnecting PCM Connectors With Torque Specifications (Continental PCM)

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
7. Disconnect PCM connectors A, B, and C.
   NOTE: PCM connectors A, B, and C have symbols (A=□, B=Δ, C=◦) embossed on them for identification.
8. Keihin PCM: Loosen or remove the bolts (E), then remove the PCM (F).
9. Continental PCM: Remove the nuts (G), then remove the PCM (F).
10. Continental PCM: Remove the spacers (H).
11. Install a known-good PCM in the reverse order of removal.
12. Turn the ignition switch to ON (II).
    NOTE: DTC P0630 (VIN Not Programmed or Mismatch) may be stored because the VIN has not been programmed into the PCM; ignore it, and continue this procedure.
13. Manually input the VIN to the PCM with the HDS.
14. Select the IMMOBI system with the HDS.
15. Enter the immobilizer PCM code that you got from the iN, and use the PCM replacement procedure in the IMMOBI Menu of the HDS; it allows you to start the engine.
16. Select the PGM-FI system, and reset the PCM with the HDS.
17. Update the PCM if it does not have the latest software (see PCM UPDATE ).
18. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
19. Do the CKP pattern clear/CKP pattern learn procedure.