Engine Control Module: Service and Repair

PCM Replacement

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

NOTE:
- Make sure the HDS is loaded with the latest software version.
- If you are replacing the PCM after substituting a known-good PCM, reinstall the original PCM, then do this procedure.
- During the procedure, if any READ DATA, WRITE DATA, or other data checks fail, note the failure, then continue.

1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.






2. Turn the ignition switch ON (II).
3. Make sure the HDS communicates with the PCM and other vehicles system. If it doesn't, go to the DLC circuit troubleshooting. Testing and Inspection
If you are returning from DLC circuit troubleshooting, skip steps 4 through 7, 16 through 18, and 21 through 22, and do the Following procedures after replacing the PCM (USA, Canada models);
- Replace the engine oil and the engine oil filter.
- Clean the throttle body.

4. USA, Canada models: Select the PGM-FI system with the HDS.
5. USA, Canada models: Select the INSPECTION MENU with the HDS.
6. USA, Canada models: Select the ETCS TEST, then select the TP POSITION CHECK, and follow the screen prompts.

NOTE: If the TP POSITION CHECK indicates FAILED, continue with this procedure.

7. USA, Canada models: Select the REPLACE PCM MENU, then READ DATA and follow the 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 the new PCM.
- If READ DATA indicates FAILED, continue with this procedure.

8. Turn the ignition switch OFF.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connectors A, B, and C.






11. Remove the bolt (D), and remove the PCM assembly (E).
12. Remove the cover (A), and the bracket (B) from the PCM (C).






13. Install the parts in the reverse order of removal.
14. Turn the ignition switch ON (II).
15. 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.

16. USA, Canada models: If the READ DATA (engine oil life) failed in step 7, go to step 19. Otherwise, go to step 17.
17. USA, Canada models: Select the PGM-FI system with the HDS.
18. USA, Canada models: Select the REPLACE PCM MENU, then WRITE DATA and follow the screen prompts.

NOTE: If the WRITE DATA indicates FAILED, continue with this procedure.

19. Select IMMOBI system with the HDS.
20. Enter the immobilizer code with the PCM replacement procedure in the HDS; it allows you to start the engine.
21. USA, Canada models: If the TP POSITION CHECK failed in step 6, clean the throttle body, then go to step 22.
22. USA, Canada models: If the READ DATA failed in step 7 or the WRITE DATA failed in step 18, replace the engine oil and engine oil filter, then go to step 23.
23. Select PGM-FI system and reset the PCM with the HDS.
24. Update the PCM if it does not have the latest software.
25. Do the PCM idle learn procedure.
26. Do the CKP pattern learn procedure.