ECM Reprogramming Instructions For DTC P0121 In High Altitude Regions (05-36-005)

ECM REPROGRAMMING INSTRUCTIONS FOR DTC P0121 IN HIGH ALTITUDE REGIONS

TECHNICAL SERVICE BULLETIN

DESCRIPTION

Some 2005 MY Accent vehicles may experience the following symptom in high altitude regions when the engine is running for more than 50 seconds after the engine is turned OFF, and then back ON again within 0.5 seconds:

• Check engine light is on.
• Diagnostic Trouble Code (DTC) P0121 (Throttle Position Sensor Malfunction) is stored in the engine control module (ECM).

This bulletin provides a procedure to reprogram the ECM to correct this condition using the Hi-Scan Pro.

VEHICLES AFFECTED

• Model: 2005 ACCENT vehicles
• Affected vehicle production date range: June 4, 2004 through December 2, 20049+

ECM SPECIFICATIONS TABLE

MODEL	AFFECTED ECM PART NUMBER	ECM ID		REMARK
		PREVIOUS	NEW
2005 ACCENT	39110-26714	LCML5N06 LCML5N16 LCML5N26 LCML5N36 LCML5N46 LCML5N56	LCML5N66	M/T
	39110-26717	LCPL5N06 LCPL5N16 LCPL5N26 LCPL5N36 LCPL5N46 LCPL5N56 LCPL5N66 LCPL5N76	LCPL5N86	A/T

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.

ECM REPROGRAMMING PROCEDURE

AUTOMATIC UPDATE 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 with the new ECM program into the Hi-Scan Pro top slot.
   Fig 1: Inserting Reprogram Card

   
3. Plug the DLC cable from the Hi-Scan Pro into the 16 pin data link connector (under the driver's side instrument panel).
   Fig 2: Plugging DLC Cable From HI-Scan Pro Into 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 "59. LC F/L 1.5S/1.6D 05MY TPS LOGIC"  and press ENTER. 
   Fig 3: Campaign Selection

   
7. Select option "01. F/L 1.5S/1.6D 05MY TPS LOGIC [AUTO]"  and press ENTER. 
   Fig 4: LC Re-Programming

   
8. Enter "1229"  as the password for automatic update mode and press ENTER. 
   Fig 5: Entering Password

   
9. The Hi-Scan Pro will establish communication, check the ECM ID and reprogram the ECM automatically. Wait until the reprogramming is complete.
   Fig 6: Establishing Communication

   
   NOTE:

   • The Hi-Scan Pro detects the current ECM ID, assigns the new ECM ID and displays them on the Hi-Scan Pro screen.
   • Check the ECM IDs displayed on the Hi-Scan Pro screen to verify that the correct ECM software is being downloaded. Refer to ECM SPECIFICATIONS TABLE  .
   • If the Hi-Scan Pro does not download the program, use the Manual Update Procedure following this section.

   Fig 7: Verifying Download

   
   WARNING:

   • Do not interrupt the reprogramming at any time.
   • The ECM will be rendered inoperative if the program does not download completely.
10. When the "REPROGRAMMING COMPLETED"  message is displayed, turn the Hi-Scan Pro OFF and the process is complete.
    Fig 8: Reprogramming Completed

    
11. When the reprogramming is completed successfully, turn the ignition to the OFF position for 20 seconds and then start the engine to check for proper operation.
12. Check for diagnostic trouble codes using the Hi-Scan Pro with the system software card. Erase any trouble codes.

MANUAL UPDATE PROCEDURE

1. Turn the ignition to the ON position.
2. Turn the Hi-Scan Pro ON  and press ENTER. 
3. Select option "59. LC F/L 1.5S/1.6D 05MY TPS LOGIC"  and press ENTER. 
   Fig 9: Campaign Selection

   
4. Select option "02. F/L 1.5S/1.6D 05MY TPS LOGIC [ERROR]"  and press ENTER. 
   Fig 10: Selecting Option

   
5. Choose the vehicle type that is correct for the vehicle you are reprogramming by referring to the "ECM SPECIFICATIONS TABLE" provided on page 2 of this TSB and press ENTER. 
   Fig 11: Choosing Vehicle Type

   
6. Enter the correct password by using the chart below and press ENTER. 
   WARNING:

   • Be sure to input the correct password.
   • If an incorrect password is selected, the correct ECM software will not be downloaded.
   PASSWORD SPECIFICATION
   
   

   MENU	PASSWORD
   03. LC 1.6D M/T 05MY: 39110-26714	6714
   04. LC 1.6D A/T 05MY: 39110-26717	6717

   Fig 12: Entering Password

   
7. Wait until the reprogramming is completed. The Hi-Scan Pro will reprogram the ECM.
   WARNING:

   • Do not interrupt the reprogramming at any time.
   • The ECM will be rendered inoperative if the program does not download completely.
   Fig 13: Establishing Communication

   
   NOTE:

   • The Hi-Scan Pro displays the new ECM ID on the Hi-Scan Pro screen.
   • Check the new ECM ID displayed on the Hi-Scan Pro screen to verify that the correct ECM software is being downloaded. Refer to ECM SPECIFICATIONS TABLE  .
   Fig 14: Verifying Download

   
8. When the "REPROGRAMMING COMPLETED"  message is displayed, turn the Hi-Scan Pro OFF and the process is complete.
   Fig 15: Reprogramming Completed Message

   
9. When the reprogramming is completed successfully, turn the ignition to the OFF position for 20 seconds and then start the engine to check for proper operation.
10. Check for diagnostic trouble codes using the Hi-Scan Pro with the system software card. Erase any trouble codes.

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 ECM 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. F/L1.5S/1.6D 05MY TPS LOGIC [ERROR]". 

WARRANTY INFORMATION

OP CODE	OPERATION	OP TIME	CAUSAL PART NUMBER	NATURE CODE	CAUSE CODE
39109F11	ECM Reprogramming	0.3 M/H	Please refer to the appropriate Part Number	(1)	(2)
(1) Warning Lights On (2) Improper adjustment