Programming and Relearning
Updating the PCMSpecial Tools Required
^ Honda diagnostic system (HDS)
^ Honda interface module (HIM)
^ HDS pocket tester
NOTE:
^ Use this procedure when you need to update the PCM during troubleshooting procedures.
^ Make sure the HDS/HIM has the latest software version.
^ Before you update the PCM, make sure the battery in the vehicle is fully changed.
^ Never turn the ignition switch OFF during the update. If there is a problem with the update, leave the ignition switch ON.
^ To prevent PCM damage, do not operate anything electrical (headlights, audio system, brakes, A/C, power windows, door locks, etc.) during the update.
^ To ensure the latest program is installed, do a PCM update whenever the PCM is substituted or replaced.
^ You cannot update a PCM with a program it already has. It will only accept a new program.
^ If you need to diagnose the Honda interface module (HIM) because the HIM's red (# 3) lamp came on or was flashed during the update, leave the ignition switch in the ON (II) position when you disconnect the HIM from the data link connector (DLC). This will prevent PCM damage.
1. Turn the ignition switch ON (II), but do not start the engine.
2. Connect the HDS to the DLC (A) located under the driver's side of the dashboard.
3. Make sure the HDS communicates with the PCM. If it does not, go to the DLC circuit troubleshooting.
4. Exit the HDS diagnostic system, then select the PCM update procedure as described on the HIM label and in the CM update system.
5. If the software in the PCM is the latest, disconnect the HDS/HIM from the DLC, and go back to the procedure that you were doing. If the software in the PCM is not the latest, follow the instructions on the screen. If prompted to choose the PGM-FI system or the A/T system, make sure you update both.
NOTE: If the PCM update system requires you to cool the PCM, follow the screen prompts. If you run into a problem (programming takes over 15 minutes, status bar goes over 100%, D or immobilizer indicator flashes, HDS tablet freezes, etc.) during the update procedure, follow these steps to minimize the chance of damaging the PCM:
^ Leave the ignition switch in the "ON (II)" position.
^ Connect a jumper battery (do not connect a battery charger).
^ Shut down the HDS.
^ Disconnect the HDS from the DLC.
^ Reboot the HDS.
^ Reconnect the HDS to the DLC, and try the update procedure again.
6. Do the PCM idle learn procedure.
7. Do the start clutch pressure control calibration procedures.
Substituting the PCM
Special Tools Required
^ Honda diagnostic system (HDS)
^ Honda interface module (HIM)
^ HDS pocket tester
NOTE: Use this procedure when you need to substitute a known-good PCM during troubleshooting procedures.
1. Make sure you have anti-theft code for the audio unit or the navigation system.
2. Connect the HDS to the DLC (A).
3. Turn the ignition switch 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 DLC circuit troubleshooting, skip steps 5 to 13, then 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 OFF.
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 the a known-good PCM and the battery in the reverse order of removal.
15. Turn the ignition switch 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 step 5, 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 unit or the navigation system. Set the clock.