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Engine Controls - Hesitation While Driving

VOLUME
3

GROUP
Engine

NUMBER
019

MODEL
Optima

DATE
October 2004

SUBJECT:
OPTIMA 2.7L ECM UPGRADE

This bulletin provides information relating to an Optima ECM upgrade. Some 2003MY Optima vehicles built between 5/31/02 - 4/25/03 and some 2004MY vehicles built between 5/14/04 - 7/24/04 may experience a hesitation while driving.

Use the procedures in this bulletin to reprogram the Hi-Scan Pro, Engine Control Module (ECM) software for 2003 - 2004 MY Optima vehicles with 2.7L engines to resolve this hesitation concern.





ROM ID INFORMATION TABLE:





A new 32MB Reprogramming Card is being provided to accommodate reprogramming software due to the fact that the existing 16MB card (yellow label) is at the limit of its storage capacity. This card is provided with the Optima 2.7L ECM Upgrade pre-installed.

This card will be used for future Hi-Scan Pro re-programming software. All reprogramming software previously issued will remain on the 16MB (yellow label) reprogramming card and will not be carried over to the new card.

REPROGRAMMING PROCEDURE:

*NOTICE
Conduct reprogramming with the ignition key in the "ON" position. Be careful NOT to disconnect any cables connected to the vehicle or Hi-Scan Pro during reprogramming.

If reprogramming is interrupted, the manual update procedure must be used.

Do not start the engine during reprogramming.

Do not turn the ignition key OFF during reprogramming.

When the reprogramming is completed, turn OFF the ignition key for 20 seconds before starting the engine.

Before Starting Procedure:

Check the production date on the FMVSS door label to verify that the vehicle is within the production range shown.

To prepare for reprogramming in case of an error, write down the old and new ECM IDs displayed on the Hi-Scan Pro screen during the automatic update procedure.

The recorded ECM IDs will be used if the Hi-Scan Pro fails to automatically download the new ECM software.

AUTOMATIC UPDATE PROCEDURE:





1. Attach the Data Link Connector (DLC) cable to the Hi-Scan Pro main body and tighten the two (2) bolts securely.

2. Remove any software cards from the Hi-Scan Pro and insert the new 32MB (blue label) reprogramming card into the Hi-Scan Pro top slot. Use the most current reprogramming software.





3. Connect the Hi-Scan Pro to the vehicle OBDII connector under the dash on the driver's side of the vehicle.





4. Turn the ignition switch to the ON position.

5. Turn the Hi-Scan Pro ON and press ENTER.

6. Select Option "20. MS 2.7 INTERMITTENT HESITATION" and press ENTER.





7. Select Option "01. MS 2.7 03~04MY INTERMITTENT [AUTO] and press ENTER.





8. Enter "0525" as the password for the automatic update mode and press ENTER.

9. The Hi-Scan Pro will reprogram the ECM automatically.

Notes:

The current ECM ID will be replaced by the new ECM ID.

If the Hi-Scan Pro does not download the program properly, use the manual update procedure following this section.

*NOTICE
Do not interrupt the reprogramming at any time. The ECM may be rendered inoperative if the reprogram does not download completely.





10. When the "REPROGRAMMING COMPLETED" message is displayed, check the new ECM ID displayed on the Hi-Scan Pro screen to verify that the correct ECM software has been downloaded. Refer to the "ECM SPECIFICATIONS" in this TSB for the ECM ID listing. Turn the Hi-Scan Pro OFF to complete the download procedure.

11. To verify that the reprogramming is completed successfully, turn the ignition switch to the OFF position for 20 seconds. Start the engine and check for proper engine operation.

12. Check for DTC using the Hi-Scan Pro with system software card and erase any DTC.

Note:
Refer to Troubleshooting on Page 8 if download does not work properly.

MANUAL UPDATE PROCEDURE:

Notes:

If selection menu Option "01. MS 2.7 03~04MY INTERMITTENT HESITATION [AUTO]" fails to download the new program, Option "02. MS 2.7 03~04MY INTERMITTENT HESITATION [ERROR]" must be used.

Confirm all connections are established as shown in the "AUTOMATIC UPDATE PROCEDURE" before continuing.





1. Turn the ignition switch to the ON position.

2. Turn the Hi-Scan Pro ON and press ENTER.

3. Select Option "20. MS 2.7 INTERMITTENT HESITATION" and press ENTER.





4. Select Option "02. MS 2.7 03~04MY INTERMITTENT [ERROR]" for manual reprogramming and press ENTER.





5. Choose the correct vehicle year for the vehicle to be reprogrammed.








6. From the chart, select and enter the correct password for the manual update mode, then press ENTER.





7. Wait until the reprogramming is completed. Hi-Scan Pro will reprogram the ECM manually.

Notes:

The program will take approximately 7 minutes to download completely.

The Hi-Scan Pro displays the new ECM ID on the screen.

* NOTICE
Do not interrupt the reprogramming at any time. The ECM may be rendered inoperative if the reprogram does not download completely.





8. When the "REPROGRAMMING COMPLETED" message is displayed, check the new ECM ID displayed on the Hi-Scan Pro screen to verify that the correct ECM software has been downloaded. Refer to the ECM SPECIFICATIONS in this TSB for the ECM ID listing. Turn the Hi-Scan Pro OFF to complete the download procedure.

9. To verify the reprogramming is completed successfully, turn the ignition switch to the OFF position for 20 seconds. Start the engine and check for proper engine operation.

10. Check for DTC using the Hi-Scan Pro with system software card and erase any DTC.

TROUBLESHOOTING:

1. "INVALID PASSWORD" - Enter the correct password for the automatic update mode again (0525).

2. "REPROGRAMMING ERROR PLEASE WAIT FOR RETRY" - An error occurred during reprogramming, the Hi-Scan Pro will retry the reprogramming automatically.

3. "THIS ECM IS DIFFERENT TYPE" - The ECM on this vehicle is not the type subject to this reprogramming procedure.

4. "ALREADY REPROGRAMMED" - The reprogramming has previously been done on this vehicle.

5. "REPROGRAM ERROR PLEASE CHECK SYSTEM" - In this case, you must reprogram manually by selecting menu Option "02. MS 2.7 03~04MY INTERMITTENT HESITATION [ERROR]".

AFFECTED PRODUCTION RANGE:

2003 - 2004MY Optima vehicles with production dates between 5/31/02 - 4/25/03 and 2004MY vehicles with production dates between 5/14/04 - 7/24/04.





WARRANTY CLAIM INFORMATION:
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