PCM Update: Procedure

PCM - Update
NOTE: Check any official Honda service website for more service information about updating the MVCI and control units.
Warm Up The Engine
Start the engine. Hold the engine speed at 3, 00 rpm without load in P or N until the radiator fan comes on, then let it idle.
PCM - Idle Learn
1. Let the engine idle for about 5 minutes with the throttle fully closed.
  NOTE: If the radiator fan comes on, do not include its running time in the 5 minutes.
2. After learning, turn the ignition switch to LOCK (0).
CKP Pattern - Clear/Learn
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 to ON (II).
3. Make sure the HDS communicates with the vehicle. If it does not communicate, go to the DLC circuit troubleshooting.
4. Select CRANK PATTERN in the ADJUSTMENT MENU with the HDS.
  
  Fig 1: Identifying Data Link Connector (DLC)
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
5. Select CRANK PATTERN CLEAR, and clear the CKP pattern.
6. Select CRANK PATTERN LEARNING with the HDS, and follow the screen prompts.
7. After learning, turn the ignition switch to LOCK (0).
8. Disconnect the HDS from the DLC.