Engine Control Module: Service and Repair
ECM/PCM Replacement'06-07 models
NOTE:
- Make sure the HDS is loaded with the latest software version.
- If you are replacing the ECM/PCM after substituting a known-good ECM/PCM, reinstall the original ECM/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 ECM/PCM. If it doesn't, go to the DLC circuit troubleshooting. If you are returning from DLC circuit troubleshooting, skip steps 4 through 9 and 20 through 25, and do the following procedure after replacing the ECM/PCM.
- Replace the engine oil, and the engine oil filter.
- Replace the ATF.
- Clean the throttle body.
4. Select the PGM-FI system with the HDS.
5. Select the INSPECTION MENU with the HDS.
6. Select the ECTS TEST, then select the TP POSITION CHECK, and follow the screen prompts.
NOTE: If the TP POSITION CHECK indicated 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: Select the A/T SYSTEM with the HDS.
9. A/T: Select the REPLACE TCM/PCM, then 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 OFF.
11. Jump the SCS line with the HDS.
12. Remove the center lower covers (A).
13. Remove the duct (B).
14. Disconnect the ECM/PCM connectors (C).
15. Remove the bolts (D), then remove the ECM/PCM (E).
16. Install the ECM/PCM in the reverse order of removal.
17. Open the SCS line with the HDS.
18. Turn the ignition switch ON (II).
19. Manually input the VIN into 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) or step 26 (M/T). Otherwise, go to step 21.
21. Select the PGM-FI system with the HDS.
22. Select the REPLACE ECM/PCM MENU, then WRITE DATA and follow the screen prompt.
NOTE: If the WRITE DATA indicates FAILED, continue with this procedure.
23. A/T: If the READ DATA (ATF life) failed in step 9, go to step 26. Otherwise go to step 24.
24. A/T: Select the A/T SYSTEM with the HDS.
25. A/T: Select the REPLACE ECM/PCM MENU, then 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 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, 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, and engine oil filter, then go to step 30 (A/T) or step 31 (M/T).
30. If the READ DATA failed in step 9 or the WRITE DATA failed in step 25, replace the ATF, 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.
33. Do the ECM/PCM idle learn procedure.
34. Do the CKP pattern learn procedure.