PCM Replacement

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 PCM and all other vehicle systems. If it does not, go to the DLC circuit troubleshooting (see DLC CIRCUIT TROUBLESHOOTING  ). If the result of the DLC circuit troubleshooting is to replace the PCM, skip steps 4 and  5,  14 through  16, and  19, and do the following procedures after replacing the PCM:
   • Replace the engine oil (see ENGINE OIL REPLACEMENT ) and the engine oil filter (see ENGINE OIL FILTER REPLACEMENT ).
4. USA, Canada models: Select the PGM-FI system with the HDS.
5. USA, Canada models: Select the REPLACE PCM MENU, then select READ DATA, and follow the HDS screen prompts.
   NOTE:

   • Doing this step copies (READS) the engine oil life data from the original PCM so you can later download (WRITES) it into a new PCM.
   • If READ DATA indicates FAILED, continue with this procedure.
6. Turn the ignition switch to LOCK (0).
7. Jump the SCS line with the HDS.
8. 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.
   Fig 2: PCM Assembly & Connector With Torque Specifications

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
9. Remove the bolts (D), and remove the PCM assembly (E).
10. Remove the cover (A), and the bracket (B) from the PCM (C).
    Fig 3: Cover, Bracket And PCM With Torque Specifications

    Courtesy of AMERICAN HONDA MOTOR CO., INC.
11. Install the parts in the reverse order of removal.
12. Turn the ignition switch to ON (II).
13. Manually input the VIN to the PCM with the HDS.
    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. USA, Canada models: If the READ DATA (engine oil life) failed in step  5, go to step  17. Otherwise, go to step 15.
15. USA, Canada models: Select the PGM-FI system with the HDS.
16. USA, Canada models: Select the REPLACE PCM MENU, then select WRITE DATA, and follow the HDS prompts.
    NOTE: If the WRITE DATA indicates FAILED, continue with this procedure.
17. Select 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. USA, Canada models: If the READ DATA failed in step  5 or the WRITE DATA failed in step  16, replace the engine oil (see ENGINE OIL REPLACEMENT ) and engine oil filter (see ENGINE OIL FILTER REPLACEMENT ), then go to step 20.
20. Clean the throttle body (see THROTTLE BODY TEST ).
21. Select PGM-FI system, and reset the PCM with the HDS.
22. Update the PCM if it does not have the latest software (see PCM UPDATE  ).
23. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
24. Do the CKP pattern clear/CKP pattern learn procedure (see HDS CLEAR COMMAND ).