Substituting the ECM/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
• MVC1 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 the DLC circuit troubleshooting (see DLC CIRCUIT TROUBLESHOOTING ). If you are returning from DLC circuit troubleshooting, skip steps 4 and 5, then the clean the throttle body (see THROTTLE BODY CLEANING ) after substituting the ECM/PCM.
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. Turn the ignition switch to LOCK (0).
7. Jump the SCS line with the HDS.
8. Remove the ECM/PCM cover (A).
   Fig 2: Removing Battery Setting Plate

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
9. Remove the battery setting plate (B), and reposition the battery away from the ECM/PCM.
   NOTE: Do not disconnect the battery terminals.
10. Remove the bolts (D).
    Fig 3: Disconnecting ECM/PCM Connectors A, B, And C With Torque Specifications

    Courtesy of AMERICAN HONDA MOTOR CO., INC.
11. Disconnect ECM/PCM connectors A, B, and C, then remove the ECM/PCM (E).
    NOTE:

    • ECM/PCM connectors A, B, and C have symbols (A=□, B=Δ, C=◦) embossed on them for identification.
    • Canada model: When disconnecting the ECM/PCM connectors, remove the ECM/PCM sub bracket (F).
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 ECM/PCM code that you got from the iN, and use the ECM/PCM replacement procedure in the IMMOBI MENU of the HDS; it allows you to start the engine.
17. Reset the ECM/PCM with the HDS.
18. Update the ECM/PCM if it does not have the latest software (see ECM/PCM UPDATE ).
19. If the TP POSITION CHECK failed in step  5, clean the throttle body (see THROTTLE BODY CLEANING ).
20. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).
21. Do the CKP pattern clear/CKP pattern learn procedure.

OBD Status 

The OBD status shows the current system status of each DTC and all of the parameters. This function is used to see if the repair was successfully completed. The results of diagnostic tests for the DTC are displayed as:

• PASSED: The on board diagnosis is successfully finished.
• FAILED: The on board diagnosis has finished but failed.
• EXECUTING: The vehicle is in enable criteria conditions for the DTC, and the on board diagnosis is running.
• NOT COMPLETED: The on board diagnosis was running but is out of the enable conditions of the DTC.
• OUT OF CONDITION: The vehicle has stayed out of the enable conditions for the DTC.