Recall - ESP Hydraulic Control Unit Reprogramming

Group:
CAMPAIGN

Number:
05-01-003

Date:
MARCH, 2005

Model:
2005 TUCSON

Subject:
HYDRAULIC ELECTRONIC CONTROL UNIT (HECU) REPROGRAMMING PROCEDURE - CAMPAIGN 068

IMPORTANT:
DEALERS MUST PERFORM THIS CAMPAIGN ON ALL AFFECTED VEHICLES PRIOR TO CUSTOMER RETAIL DELIVERY AND WHENEVER AN AFFECTED VEHICLE IS IN THE SHOP FOR ANY MAINTENANCE OR REPAIR.

IMPORTANT:
WHEN A VEHICLE ARRIVES AT THE SERVICE DEPARTMENT, ACCESS HYUNDAI MOTOR AMERICA'S "WARRANTY VEHICLE INFORMATION" SCREEN VIA DCS INTERACTIVE OR DCS ON-LINE TO IDENTIFY OPEN CAMPAIGNS.

DESCRIPTION:

All 2005 MY Tucson vehicles are equipped with an Electronic Stability Program (ESP). The ESP system contains a yaw rate sensor, which detects if the vehicle is oversteering or understeering. The yaw rate sensor output is used by the ESP to decide if it should apply a brake or reduce engine power to help the driver control the vehicle. The ESP system may become too sensitive and activate under conditions where ESP control may not be needed.

This bulletin provides a procedure to reprogram the ESP Hydraulic Electronic Control Unit (HECU) software by using the Hi-Scan Pro to update the yaw rate sensor calibration to correct this condition.

VEHICLES AFFECTED:

^ Model: All 2005 TUCSON vehicles (2WD and 4WD) equipped with ESP

^ Affected vehicle production date range: Produced through February 27, 2005

CAUTIONS BEFORE REPROGRAMMING:

1. Conduct reprogramming with the ignition key in the "ON" position.

2. Be careful not to disconnect any cables connected to the vehicle or Hi-Scan Pro during reprogramming.

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

3. Do not start the engine during reprogramming.

4. Do not turn the ignition key OFF during reprogramming.

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

ESP HECU REPROGRAMMING PROCEDURE:

NOTE:
Verify that the vehicle is affected by identifying the vehicle production date range (through February 27, 2005).

AUTOMATIC UPDATE PROCEDURE:

NOTE:
Leave the ignition key in the "OFF" position before beginning the following procedure.





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

2. Remove the system software card from the Hi-Scan Pro and insert the reprogramming software card into the Hi-Scan Pro top slot.

NOTE:
The new software is available for downloading from the Hi-Scan update link at HMAService.com.





3. Plug the DLC cable from the Hi-Scan Pro into the 16 pin data link connector.

4. Turn the ignition switch to the "ON" position (do not start the engine).

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





6. Select option "60. TUCSON ESP LOGIC IMPROVEMENT" and press ENTER.





7. Select option "01. TUCSON ESP LOGIC IMPROVEMENT [AUTO]" and press ENTER.





8. Enter "1229" as the password for the automatic update mode and press ENTER.





9. The Hi-Scan Pro will establish communication, check the HECU ID, and reprogram the HECU automatically. Wait until the reprogramming is complete.





10. Turn the IG (ignition) key OFF and ON.

NOTES:
^ The Hi-Scan Pro detects the current HECU ID, assigns the new HECU ID and displays them on the Hi-Scan Pro screen.

^ Check the HECU IDs displayed on the Hi-Scan Pro screen to verify that the correct HECU software is being downloaded.





^ Refer to the "ESP HECU SPECIFICATION TABLE" shown to check the HECU ID.





^ If the Hi-Scan Pro does not download the program, use the Manual Update Procedure following this section.

WARNINGS:
^ Do not interrupt the reprogramming at any time.

^ The HECU will be rendered inoperative if the program does not download completely.





11. When the "REPROGRAMMING COMPLETED" message is displayed, turn the Hi-Scan Pro off and the software loading process is complete.

12. Turn the ignition key to the "OFF" position for 20 seconds and then start the engine to check for proper operation.





13. For 4WD vehicles only, the diagnostic code information "ERASE DTC (P1765) in 4WD SYSTEM" is displayed when the reprogramming has been completed. This does not indicate a problem, and the DTC P1765 diagnostic code may be cleared by following the procedure "DTC (P1765) Clearing Procedure" shown in this TSB.

MANUAL UPDATE PROCEDURE:

NOTES:
^ In the event that "01. TUCSON ESP LOGIC IMPROVEMENT [AUTO]" fails to download to the new ESP HECU program, option "02. TUCSON ESP LOGIC IMPROVEMENT [ERROR]" must be used.

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

1. Turn the ignition switch to the "ON" position.

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





3. Select option "60. TUCSON ESP LOGIC IMPROVEMENT" and press ENTER.





4. Select option "02. TUCSON ESP LOGIC IMPROVEMENT [ERROR]" and press ENTER.





5. Choose the vehicle type that is correct for the vehicle you are reprogramming and press ENTER.

NOTE:
If necessary, refer to the "ESP HECU SPECIFICATION TABLE" shown in this bulletin.








6. Enter the correct password by referring to the chart shown and press ENTER.

WARNINGS:
^ Be sure to input the correct password.

^ If an incorrect password is selected, the ESP HECU software will not be downloaded.

7. Turn the IG (ignition) key OFF and ON.





8. Wait until the reprogramming is completed.

WARNINGS:
^ Do not interrupt the reprogramming at any time.

^ The ESP HECU will be rendered inoperative if the program does not download completely.





NOTES:
^ The Hi-Scan Pro displays the new ESP HECU ID on the Hi-Scan Pro screen.

^ Check the ESP HECU ID displayed on the Hi-Scan Pro screen to verify that the correct ESP HECU software is being downloaded, as shown in the "ESP HECU SPECIFICATION TABLE" shown in this TSB.





9. When the "REPROGRAMMING COMPLETED" message is displayed, turn the Hi-Scan Pro off and the software loading process is complete.

10. Turn the ignition key to the "OFF" position for 20 seconds and then start the engine to check for proper operation.





11. For 4WD vehicles only, the diagnostic code information "ERASE DTC (P1765) IN 4WD SYSTEM" is displayed when the reprogramming has been completed. This does not indicate a problem, and the DTC P1765 diagnostic code may be cleared by following the procedure "DTC (P1765) Clearing Procedure" shown next.

DTC (P1765) CLEARING PROCEDURE:





1. To clear DTC P1765 using the Hi-Scan Pro, select option "01. HYUNDAI VEHICLE DIAGNOSIS".





2. Select option "09. TUCSON ALL" and press ENTER.





3. Select option "06. 4WD CONTROL" and press ENTER.





4. Select option "01. DIAGNOSTIC TROUBLE CODES" and press ENTER.





5. "P1765 TCS-ITM CAN COMM. LINE" will be detected. Press F2 to clear this code.





6. Press YES to clear "DTC P1765".





7. "NO TROUBLE CODE" will be displayed when the DTC code clearing procedure has been completed.

8. Turn the ignition key to the "OFF" position for 20 seconds and then start the engine to check for proper operation.

EXPLANATION OF ERROR MESSAGE:

1. "INVALID PASSWORD": Please enter the correct password again.

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

3. "ALREADY REPROGRAMMED" or "INCORRECT TARGET ID": This reprogramming already has been performed on this vehicle or the HECU is not subject to this program.

4. "REPROGRAM ERROR, PLEASE CHECK THE SYSTEM": In this case, the Manual Update Procedure must be used by selecting menu option "02. TUCSON ESP LOGIC IMPROVEMENT [ERROR]".





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