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

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 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, and clean the throttle body after substituting the 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 under-hood fuse/relay box (A).
   Fig 2: Identifying Under-Hood Fuse/Relay Box And Harness Bracket

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
9. Remove the harness bracket (B).
10. Loosen the battery hold down bolt (D) and reposition the battery away from the PCM.
11. Remove the PCM cover (C).
12. Remove the bolts (D), then remove the PCM (E).
    Fig 3: PCM Bolts With Torque Specification

    Courtesy of AMERICAN HONDA MOTOR CO., INC.
13. 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.
14. Install a known-good PCM in the reverse order of removal.
15. 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.
16. Manually input the VIN to the PCM with the HDS.
17. Select the IMMOBI SYSTEM with the HDS.
18. 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.
19. If the TP POSITION CHECK failed in step 5, clean the throttle body (see THROTTLE BODY CLEANING ).
20. Reset the PCM with the HDS.
21. Update the PCM if it does not have the latest software (see PCM UPDATE ).
22. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
23. Do the CKP pattern clear/CKP pattern learn procedure.