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Engine Control Module: Service and Repair




ECM/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
- GNA600 and an iN workstation with HDS and CM update software

Use any one of these update tools.

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 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. Testing and Inspection If you are returning from the DLC circuit troubleshooting, skip steps 4 through 9, 20 through 25, and 28 through 30, and do this after replacing the ECM/PCM:
- Replace the engine oil Service and Repair and the engine oil filter. Service and Repair

- Replace the ATF (A/T model). ATF Replacement

- Clean the throttle body. Procedures

4. Select the PGM-FI system with the HDS.

5. Select the INSPECTION MENU with the HDS.

6. 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. Select the REPLACE ECM/PCM MENU, then READ DATA, and follow the screen prompts.
NOTE:

- Doing this step copies (READS) the engine oil life data from the original ECM/PCM so you can later download (WRITES) it into the new ECM/PCM.

- If READ DATA indicates FAILED, continue with this procedure.

8. A/T models: Select the A/T system with the HDS.

9. A/T models: Select the REPLACE TCM/PCM MENU, then select READ DATA, and follow the screen prompts.
NOTE:

- Doing this step copies (READS) the ATF 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.

10. Turn the ignition switch to LOCK (0).

11. Jump the SCS line with the HDS.

12. Do the battery removal procedure. Removal and Replacement






13. Remove the bolts (D).

14. Disconnect ECM/PCM connectors A, B, and C, then remove the ECM/PCM assembly (E).
NOTE: ECM/PCM connectors A, B, and C have symbols (A=(square), B=(triangle), C=(circle)) embossed on them for identification.






15. Remove the cover (A) and the bracket (B) from the ECM/PCM (C).

16. Install the ECM/PCM in the reverse order of removal.

17. Do the battery installation procedure. Removal and Replacement
NOTE: While doing the battery installation procedure, do not start the engine.

18. Turn the ignition switch to ON (II).

19. Manually input the VIN to the ECM/PCM with the HDS.
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.

20. If the READ DATA (engine oil life) failed in step 7, go to step 23 (A/T model) or step 26 (M/T model). Otherwise, go to step 21.

21. Select the PGM-FI system with the HDS.

22. Select the REPLACE ECM/PCM MENU, then select WRITE DATA, and follow the screen prompts.
NOTE: If the WRITE DATA indicates FAILED, continue with this procedure.

23. A/T models: If the READ DATA (ATF life) failed in step 9, go to step 26. Otherwise go to step 24.

24. A/T models: Select the A/T SYSTEM with the HDS.

25. A/T models: Select the REPLACE TCM/PCM MENU, then select WRITE DATA, and follow the screen prompts.
NOTE: If the WRITE DATA indicates FAILED, continue with this procedure.

26. Select IMMOBI system with the HDS.

27. Enter the immobilizer code that you obtained from iN or ISIS with the ECM/PCM replacement procedure in the HDS; it allows you to start the engine.

28. If the TP POSITION CHECK failed in step 6 clean the throttle body, Procedures then go to step 29.

29. If the READ DATA failed in step 7 or the WRITE DATA failed in step 22, replace the engine oil Service and Repair and engine oil filter, Service and Repair then go to step 30 (A/T model) or step 31 (M/T model).

30. If the READ DATA failed in step 9 or the WRITE DATA failed in step 25, replace the ATF, ATF Replacement then go to step 31.

31. Select PGM-FI system, and reset the ECM/PCM with the HDS.

32. Update the ECM/PCM if it does not have the latest software. ECM/PCM Update

33. Do the ECM/PCM idle learn procedure. ECM/PCM Idle Learn Procedure

34. Do the CKP pattern learn procedure. Initial Inspection and Diagnostic Overview





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