'04-05 models

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 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 through  6, and clean the throttle body (see THROTTLE BODY CLEANING ) after replacing the ECM/PCM.
4. Select the PGM-FI system with the HDS.
5. Select the INSPECTION MENU with the HDS.
6. Select the TP POSITION CHECK in the ETCS TEST with the HDS.
   NOTE: If the TP POSITION CHECK fails, go to step 7.
7. Turn the ignition switch OFF.
8. Jump the SCS line with the HDS.
9. Remove the center lower covers (A).
   Fig 2: Center Lower Covers, Duct, ECM/PCM Connectors And ECM/PCM Bolts w/Torque Spec.

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
10. Remove the duct (B).
11. Disconnect ECM/PCM connectors (C).
12. Remove the bolts (D), then remove the ECM/PCM (E).
13. Install the parts in the reverse order of removal.
14. Turn the ignition switch ON (II).
15. Manually input the VIN to the ECM/PCM with the HDS.
    NOTE: '05 model: 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.
16. Select IMMOBI system with the HDS.
17. Enter the immobilizer code with the ECM/PCM replacement procedure in the HDS; it allows you to start the engine.
18. If the TP POSITION CHECK failed in step  6 clean the throttle body (see THROTTLE BODY CLEANING ), then go to step 19.
19. Select PGM-FI system and reset the ECM/PCM with the HDS.
20. Update the ECM/PCM if it does not have the latest software (see UPDATING THE ECM/PCM ).
21. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).
22. Do the CKP pattern learn procedure (see CRANK (CKP) PATTERN CLEAR/CRANK (CKP) PATTERN LEARN ).

Special Tools Required 

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