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Home >> Mitsubishi >> 1995 >> 3000GT Convertible AWD V6-2972cc 3.0L DOHC Turbo >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Technical Service Bulletins >> Engine Controls - PCM Reprogramming Procedure >> II. Reprogramming A Vehicle ECU With the Vci

II. Reprogramming A Vehicle ECU With the Vci





After data is in the memory card, it can be downloaded to the VCI, then to the vehicles PCM (ECU). NOTE: Whenever the ECU is reprogrammed, a reprogramming label (p/n MSSF-024G-00) must be completed and affixed to the vehicle. Refer to the applicable reprogramming TSB for specific information that must be entered on the label.

VCI COMPONENTS





These components are required:





CONNECTING COMPONENTS

1. Insert the memory card into the PC card adapter. Then install into the VCI main unit.

2. Connect the MUT-III main harness A or B to the VCI main unit.

3. With the ignition switch in the OFF position, connect the MUT-III main harness to the data link connector.

NOTE:
For Outlander and 2002-on Montero models, use 12-pin to 13-pin adapter harness MB991855 to connect the main harness to the data link connector.

4. Turn the ignition switch to the ON position.

MAIN MENU

Turn the ignition key to ON. When the VCI unit is turned on, the main menu displays:

IMPORTANT

^ When connecting and disconnecting, do not pull on the harness wires. Pull only on the connectors.

^ During reprogramming, the ignition switch must remain ON.

^ Do not disturb the MUT-III main harness during reprogramming. After reprogramming, start the engine to verify operation.

Automatic reprogramming is recommended for most typical reprogramming situations. If automatic reprogramming is not successful, try manual reprogramming.

AUTOMATIC REPROGRAMMING





1. In the VCI main menu. select "Automatic RPG". Then press ENTER.

The available data will display.





2. Press ENTER. If the PCM requires reprogramming, the MUT-Ill will automatically identify the appropriate database. Press ENTER again to transfer the reprogramming data to the VCI.





a. If the PCM does NOT require reprogramming, this message displays. Press ENTER to return to the main menu.





b. If there is no data for reprogramming this PCM, this message displays and no data is transferred. Press ENTER to return to the main menu.





3. A progress monitor displays during data transfer to the VCI internal memory.





4. When data transfer is complete, ECU reprogramming automatically begins.





5. The ECU part number and ROM ID are displayed. Press ENTER to continue with reprogramming.





6. If the database you selected does not apply to the vehicle's PCM, this message will display. Press ENTER to return to the VCI main menu. Confirm PCM part number and appropriate reprogramming database number.





7. If the PCM has already been reprogrammed with this database, or if the MUT-III main harness is not properly connected to the VCI unit, this message displays and reprogramming will not continue.





8. Verify that the harness is connected properly, then press ENTER. The VCI will retry reprogramming.





9. A monitor indicates that reprogramming is in progress.

There are five phases in the reprogramming process. The VCI will continue with the process automatically. Do not press any key.

Step 1: Saves data to the back-up memory.

Step 2: Erases data in the ECU.

Step 3: Writes new data in the ECU.

Step 4: Verifies the new data is transferred.

Step 5: Erases diagnosis and back-up memory.





10. The new ECU part number and ROM-ID display.

You must turn the ignition switch to OFF to complete the reprogramming process.





11. Start the engine and disconnect the MUT-III.

MANUAL REPROGRAMMING





1. In the main menu, select "Load RPG file". Then press ENTER.





2. Select the reprogramming database by using the down arrow. Then press ENTER.





3. If the correct database is selected, press ENTER. If not, press ESC to cancel and return to the main menu.





4. A progress monitor displays during data transfer to the PC memory card.





5. After the data has been transferred to the PC memory card, this message displays.





6. The ECU part number and ROM ID are displayed. Press ENTER to continue with reprogramming.





7. If the database you selected does not apply to the vehicle's PCM, this message will display.

Press ENTER to return to the VCI main menu. Confirm PCM part number and appropriate reprogramming database number.





8. If the PCM has already been reprogrammed with this database, this message displays and reprogramming will not continue.

It is possible that the MUT-III main harness is not properly connected to the VCI unit.





9. Verify that the harness is connected properly, then press ENTER. The VCI will retry reprogramming.





10. A monitor indicates that reprogramming is in progress.

There are five phases in the reprogramming process. The VCI will continue with the process automatically. Do not press any key.

Step 1: Saves data to the back-up memory.
Step 2: Erases data in the ECU.
Step 3: Writes new data in the ECU.
Step 4: Verifies the new data is transferred.
Step 5: Erases diagnosis and back-up memory.





11. The new ECU part number and ROM-ID display.

You must turn the ignition switch to OFF to complete the reprogramming process.





12. Start the engine and disconnect the MUT-III.
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