Substituting the PCM

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
GNA-600 and an iN workstation with HDS and CM update software

NOTE: Use this procedure when you have to substitute a known-good PCM during troubleshooting procedures.

Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.

Fig 1: Connecting HDS To Data Link Connector (DLC)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch ON (II).
Make sure the HDS communicates with the PCM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting (see DLC CIRCUIT TROUBLESHOOTING ). If you are returning from the DLC circuit troubleshooting, ship steps 4 and 8 and clean the throttle body after updating the PCM (see THROTTLE BODY TEST ).
Select the INSPECTION MENU with the HDS
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.
Jump the SCS line with the HDS.
Remove the cover (D).

Fig 2: Removing Cover
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Disconnect the PCM connectors (B).
NOTE: PCM connectors A, B, and C have symbols (A= "□" , B= "Δ" , C= "◦" ) embossed on them for identification.
Remove the bolts (E), then remove the PCM (F).
Install the parts in the reverse order of removal.
Open the SCS with the HDS.
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.
Manually input the VIN to the PCM with the HDS.
Update the PCM if it does not have the latest software.
Select the IMMOBI SYSTEM with the HDS.
Enter the immobilizer code with the PCM replacement procedure in the HDS; it allows you to start the engine.
Reset the PCM with the HDS.
If the TP POSITION CHECK failed in step 6, clean the throttle body (see THROTTLE BODY TEST ).
Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
Do the crank (CKP) pattern learn procedure.