Operation CHARM: Car repair manuals for everyone.
Hosted by mcallihan.com

Programming and Relearning

Substituting the PCM

Special Tools Required
^ Honda diagnostic system (HDS) tablet tester
^ Honda interface module (HIM) and 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: Use this procedure when you need to substitute a known-good PCM during a troubleshooting procedures.

1. Make sure you have the anti-theft code for the audio system or the navigation system (if equipped), then write down the audio presets.
2. Connect the HDS to the DLC (A) located behind the driver's dashboard lower cover.





3. Turn the ignition switch to ON (II).
4. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting. If you are returning from the DLC circuit troubleshooting, skip steps 5 to 6, and clean the throttle body after substituting the PCM.
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 this procedure.

7. Turn the ignition switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect the negative cable from the battery, then disconnect the positive cable.
10. Remove the battery.
11. Remove the PCM cover (A).





12. Remove the bolts (D), and 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 a known-good PCM and the battery in the reverse order of removal.

NOTE: 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.

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

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. Manually input the VIN to the PCM with the HDS.
17. Update the PCM if it does not have the latest software.
18. Select the IMMOBI SYSTEM with the HDS.
19. Enter the immobilizer code with the PCM replacement procedure in the HDS; it allows you to start the engine.
20. Reset the PCM with the HDS.
21. If the TP POSITION CHECK failed in steps 6, clean the throttle body.
22. Do the PCM idle learn procedure.
23. Do the CKP pattern learn procedure.
24. Enter the anti-theft code for the audio system or the navigation system (if equipped), then enter the audio presets. Set the clock (on vehicles without navigation).