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

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
2. Turn the ignition switch to ON (II).
3. Make sure the HDS communicates with the ECM/PCM and other vehicle systems. If it doesn't, go to DLC CIRCUIT TROUBLESHOOTING . If you are returning from DLC circuit troubleshooting, skip steps  4 and  5, and the clean the throttle body after substituting the ECM/PCM (see THROTTLE BODY CLEANING ).
4. Select the INSPECTION MENU with the HDS.
5. Select the ETCS TEST, then select the TP POSITION CHECK, and follow the screen prompts.
   NOTE: If the TP POSITION CHECK indicates FAILED, continue this procedure.
6. Jump the SCS line with the HDS.
7. Turn the ignition switch to LOCK (0).
8. Remove the ECM/PCM cover (A).
   Fig 2: Identifying ECM/PCM Cover & Battery Holder

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
9. Remove the battery holder (B), and reposition the battery away from the ECM/PCM.
   NOTE: Do not disconnect the battery terminals.
10. Remove the bolts (D), and loosen the bolt (E).
    Fig 3: ECM/PCM Connectors With Torque Specifications

    Courtesy of AMERICAN HONDA MOTOR CO., INC.
11. Disconnect ECM/PCM connectors A, B, and C, then remove the ECM/PCM (F).
    NOTE: ECM/PCM connectors A, B, and C have symbols (A=□, B=Δ, C=◦) embossed on them for identification.
12. Install a known-good ECM/PCM in the reverse order of removal.
13. 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 ECM/PCM; ignore it, and continue this procedure.
14. Manually input the VIN to the ECM/PCM with the HDS.
15. Select the IMMOBI SYSTEM with the HDS.
16. Enter the immobilizer code that you got from the iN, and use the ECM/PCM replacement procedure in the HDS; it allows you to start the engine.
17. Update the ECM/PCM if it does not have the latest software (see ELD REPLACEMENT ).
18. Reset the ECM/PCM with the HDS.
19. If the TP POSITION CHECK failed in step  5, clean the throttle body (see THROTTLE BODY CLEANING ).
20. Do ECM/PCM IDLE LEARN PROCEDURE .
21. Do the CKP pattern learn procedure.