Substituting the PCM

Special Tools Required 

• Honda diagnostic system (HDS) tablet tester
• Honda interface module (HIM) and an iN workstation with HDS and CM update software
• HDS pocket tester
• GNA-600 and an iN workstation with HDS and CM update software

Use this procedure when you have to substitute a known-good PCM during troubleshooting procedures.

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

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
2. Turn the ignition switch ON (II).
3. Make sure the HDS communicates with the PCM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting (see DLC CIRCUIT TROUBLESHOOTING ). If you are returning from DLC circuit troubleshooting, skip step 4 to  8, then clean the throttle body after substituting the PCM (see THROTTLE BODY CLEANING ).
4. USA, CANADA models: Select the INSPECTION MENU with the HDS.
5. USA, CANADA models: Select the ETCS TEST, then select the TP POSITION CHECK, and follow the screen prompts.
   NOTE: USA, CANADA models: If the TP POSITION CHECK indicates FAILED, continue this procedure.
6. Jump the SCS line with the HDS.
7. Remove the panels (A) (see step 5 under CENTER CONSOLE REMOVAL/INSTALLATION ), and pull back the carpet.
   Fig 2: Location Of PCM With Torque Specifications

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
8. Remove the duct (B).
9. Disconnect the PCM connectors (C).
10. Remove the bolts (D), then remove the PCM (E).
11. Install the parts in the reverse order of removal.
12. Open the SCS with the HDS.
13. Turn the ignition switch 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.
14. Manually input the VIN to the PCM with the HDS.
15. Update the PCM if it does not have the latest software.
16. Select the IMMOBI SYSTEM with the HDS.
17. Enter the immobilizer code with the PCM replacement procedure in the HDS; it allows you to start the engine.
18. Reset the PCM with the HDS.
19. If the TP POSITION CHECK failed in step  5, clean the throttle body (see THROTTLE BODY CLEANING ).
20. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
21. Do the CKP pattern learn procedure.