Engine Control Module: Service and Repair
PCM ReplacementSpecial 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.
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, is any READ DATA, WRITE DATA, or other data checks fail, note the failure, then continue.
1. Make sure you have the anti-theft codes for the audio system or the navigation system (if equipped), then write down the audio presets.
2. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
3. Turn the ignition switch ON (II).
4. Make sure the HDS communicates with the PCM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting. Testing and Inspection If you are returning from DLC circuit troubleshooting, skip steps 5 through 8,19 through 24, and do the these procedures after replacing the PCM:
- Replace the engine oil and the engine oil filter.
- Clean the throttle body.
5. Select the PGM-FI system with the HDS.
6. Select the INSPECTION MENU with the HDS.
7. 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.
8. 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.
9. Turn the ignition switch OFF.
10. Remove the battery.
11. Remove the cover (A).
12. Remove the bolts (D), then remove the PCM (E).
13. Disconnect PCM connectors A, B, and C.
NOTE: PCM connectors A, B, and C have symbols (A=Square, B=Triangle, C=Circle) embossed on them for identification.
14. Install the parts in the reverse order of removal.
15. Turn the ignition switch ON (II).
16. 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.
17. If the READ DATA (engine oil life) failed in step 8, go to step 22. Otherwise, go to step 18.
18. Select the PGM-FI system with the HDS.
19. Select the REPLACE PCM MENU, then WRITE DATA and follow the screen prompts.
NOTE: If the WRITE DATA indicates FAILED, continue with this procedure.
20. Select IMMOBI system with the HDS.
21. Enter the immobilizer code with the PCM replacement procedure in the HDS; it allows you to start the engine.
22. If the TP POSITION CHECK failed in step 7 clean the throttle body, then go to step 23.
23. If the READ DATA failed in step 8 or the WRITE DATA failed in step 19, replace the engine oil and engine oil filter, then go to step 24.
24. Select PGM-FI system and reset the PCM with the HDS.
25. Update the PCM if it does not have the latest software.
26. Do the PCM idle learn procedure.
27. Do the CKP pattern learn procedure.
28. Do the start clutch pressure control calibration procedure.
29. Enter the anti-theft codes for the audio system or the navigation system (if equipped), then enter the audio presets. Set the clock (on vehicles without navigation).
30. Check that the IMA battery level indicator (BAT). If the IMA battery level indicator (BAT) on the gauge indicates zero level, start the engine, and hold it between 3,500 rpm and 4,000 rpm without load (in Park or neutral) until the IMA battery level indicator (BAT) indicates at least three segments.