Special Tools Required

Honda diagnostic system (HDS) tablet tester
Honda interface module (HIM) and iN workstation with the latest HDS software version
HDS pocket tester
GNA600 and iN workstation with the latest HDS software version

Any one of the above updating tools can be used.

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

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 to ON (II).
Make sure the HDS communicates with the PCM and all other vehicle systems. If it doesn't, go to DLC CIRCUIT TROUBLESHOOTING . If you are returning from DLC CIRCUIT TROUBLESHOOTING ), skip step 4 and 5, and then clean the throttle body (see THROTTLE BODY CLEANING ) after substituting the PCM.
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.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Remove the cover (D).

Fig 2: PCM Connectors & Cover With Torque Specifications

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Disconnect PCM connectors A, B, and C.
NOTE: PCM connectors A, B, and C have symbols (A=□, B=Δ, C=◦) embossed on them for identification.
Remove the bolts (E) and the PCM (F).
Install a known-good PCM in the reverse order of removal.
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.
Manually input the VIN to the PCM with the HDS.
Select the IMMOBI SYSTEM with the HDS
Enter the immobilizer code using the PCM replacement procedure in the HDS; this allows you to start the engine..
Reset the PCM with the HDS.
If the TP POSITION CHECK failed in step 5, clean the throttle body (see THROTTLE POSITION LEARNING CHECK
Update the PCM if it does not have the latest software (see PCM UPDATE ).
Do PCM IDLE LEARN PROCEDURE .
Do the CKP pattern learn procedure.