Engine Controls - MIL ON/DTC's P0300/P0456
Group: FUEL SYSTEMNumber: 10-FL-015
Date: NOVEMBER 2010
Subject
ECM UPDATE - P0300, P0456 DTC LOGIC
DESCRIPTION:
This bulletin provides information related to the ECM software update of some 2009~2010MY GENESIS SEDAN (BH) 4.6L vehicles which experience a malfunction indicator lamp illuminated with the ECM (Electronic Control Module) system-related DTC P0300 or P0456:
^ P0300 Random/Multiple Cylinder Misfire Detected
^ P0456: Evaporative Emission System-Leak detected (very small leak)
APPLICABLE VEHICLES:
^ 2009~2010MY GENESIS SEDAN (BH) 4.6L
ECM ROM ID INFORMATION:
NOTE:
This TSB applies if the vehicle ROM ID is listed in the PREVIOUS column of the ROM ID Table below. The ROM ID in the NEW column was the latest available ROM ID at the date of this TSB publication, however, you may select a later event number if one is shown in the GDS ECM update list, even if it describes another issue. This would generate a more recent ROM ID than shown below, but would also include the update from this TSB.
GDS SYSTEM AND ECM UPDATE PRECAUTIONS:
CAUTION:
Please verify the following items before performing the ECM update:
^ Make sure the vehicle's battery has reasonable charge. If the vehicle has been in storage, run the engine to ensure an adequate battery charge state for reliable update results. The ECM Update procedure contains a check to verify that battery voltage is above 12 volts to allow the procedure to occur.
^ The USB cable must be used for ECM Update between the GDS and VCI. The procedure will not work in VCI wireless mode.
^ Make sure the GDS laptop battery indicator in the lower right tray icons has 50% or more charge (half bar on the battery symbol). Charge the laptop battery with the AC adaptor cable if the charge is less than 50%.
^ Turn off all lamps (do not leave head lamp switch in auto mode) and all accessories (including heater, A/C, blower, radio, seat warmer, defroster, etc.) to prevent battery discharge during the update.
^ Perform update with the ignition switch in the ON position.
^ Be careful not to disconnect any cables connected to the vehicle or scan tool during the update.
^ Do not start the engine during update.
^ Do not turn off the ignition switch during update
NOTE:
Make sure you have performed the most recent GDS and VCI Internet Updates to assure you have the latest available ECM Update events.
NOTE:
If you encounter GDS related problems call GIT Helpline for assistance.
GDS AUTO MODE ECM UPDATE PROCEDURE:
1. Turn the vehicle's ignition key to the ON position.
2. Select ECU Upgrade on the initial GDS home page screen. If you are not at the home page double click at GDS at top left of the screen to go back to home page.
3. GDS will automatically determine the vehicle information based on the VIN it reads from the vehicle's ECM, then select Engine Control as system and OK.
4. Select Auto Mode then ENGINE then OK so the ROM ID will be read:
5. After reading the ROM ID if there is an available update it will display a screen like that shown below with the available updates for the vehicle. Select the Upgrade Event: "210. 09~10MY BH 4.6 ECM UPDATE." or any later (higher) event number that shows in the GDS list for any other issue.
NOTE:
This screen is example only. The GDS will show your vehicle, its current ROM ID and latest ROM ID for update based on the event that you select. Select the most recent available (highest) event number in the list, even if it describes a different issue as it will ensure the vehicle receives the latest available updates.
NOTE:
An error message may appear if the ECM Update had already been completed or is not available for your vehicle.
6. After selecting the Upgrade button the vehicle battery voltage is checked to make sure it is at least 12 volts, which is required to ensure reliable update results. Select OK if the results indicate voltage is above 12 volts.
CAUTION:
If voltage is below 12 volts, then select Cancel and run the engine at idle for at least 10 minutes to ensure an adequate battery charge state for reliable update results.
7. Updating will occur until 100% is reached on the bar graph, then the confirmation screen will be displayed. Turn the ignition key OFF for 10 seconds then place it back in the ON position followed by select OK.
8. Select OK on the final screen, which indicates update is complete. Check for and erase any DTC found in each system including ENG, A/T, ESC, and other systems that can occur due to temporary CAN communication loss during the ECM update.
9. Start the engine to confirm proper operation of the vehicle.
GDS MANUAL MODE ECM UPDATE PROCEDURE:
NOTE:
Manual Mode ECM Update is intended to be used only if Auto Mode ECM Update had failed after the progress bar began during the update.
IMPORTANT:
You must reset the ECM by disconnecting the ECM connectors for 10 minutes and then reconnecting them before trying the Manual Mode ECM Update.
1. Turn the vehicle's ignition key to the ON position.
2. Within the ECU Upgrade screen, select ENGINE, Manual Mode, and then select the Upgrade Event: "210. 09~10MY BH 4.6 ECM UPDATE." or any later (higher) event number that shows in the GDS list for any other issue.
3. Select the appropriate control unit part number with reference to the ROM ID Information Table and then perform Upgrade.
4. Enter the Event password from the table and then select OK.
5. Remaining steps are identical to steps 6-9 of the above Auto Mode procedure.
WARRANTY INFORMATION: