Engine Controls - Rough Idle/MIL ON/DTC P0304 Set
GROUP ENGINENUMBER 065
MODEL 2010 FORTE/KOUP WITH 2.0L ENGINE
SUBJECT:
PCM UPGRADE FOR P0304 DUE TO VCM MOTOR VARIATION LOGIC IMPROVEMENT
This bulletin provides the procedure to upgrade the Powertrain Control Module (PCM) of some 2010 Model Year Forte (TD) Sedan and Koup with 2.0L engines. This reflash has enhanced VCM logic to improve a rough idle condition at start-up or a MIL ON and stored DTC P0304 set at start-up. For confirmation that the latest reflash has been performed to a vehicle you are working on, verify ROM ID using the tables in this TSB.
To correct this condition, the ECM should be reprogrammed using the GDS download as described in this bulletin.
NOTICE
^ A fully charged battery is necessary before ECU upgrade can take place. DO NOT connect a battery charger to the vehicle during ECU upgrade. Make sure the blower motor is "OFF" during ECU upgrade.
^ All ECU upgrades must be done with the ignition key in the "ON" position.
^ Be careful not to disconnect any cables connected to the vehicle or GDS during the ECU upgrade procedure.
^ DO NOT start the engine during ECU upgrade.
^ DO NOT turn the ignition key "OFF" or interrupt the power supply during ECU upgrade.
^ When the ECU upgrade is completed, turn the ignition key "OFF" and wait 20 seconds before starting the engine.
^ ONLY use approved ECU upgrade software designated for the correct model, year and engine size. Failure to do so may create other driveability issues due to the use of the incorrect ECM/PCM calibration.
ROM ID INFORMATION TABLE
1. Connect the power supply cable to the GDS tool.
NOTICE
If attempting to perform the ECU upgrade with the power supply cable disconnected from the GDS tool, be sure to check that the GDS tool is fully charged before ECU upgrade. If the GDS tool is not fully charged, failure to perform the ECU upgrade may occur. Therefore, it is strongly recommended that the power supply connector be connected to the GDS tool.
2. Connect the USB cable between the VCI and the GDS tool.
NOTICE
When performing the ECU upgrade using the GDS tool, wireless communication between the VCI and GDS tool is not available. Therefore, be sure to connect the USB cable between the VCI and the GDS tool.
3. Connect the Main 16-pin DLC cable (GHDM - 241000) to the VCI.
4. Connect the Main 16-pin DLC cable (GHDM - 241000) to the OBD-II connector, located under the driver's side of the instrument panel.
5. With the ignition key ON, turn ON the VCI and GDS tool. Access the GDS vehicle identification number (VIN) screen and configure the vehicle using the VIN AUTO DETECT Function.
6. Once back at the GDS Main Screen, select ECM upgrade from the bottom right-hand corner. Next select Auto Mode, Engine. Perform the ECM upgrade in accordance with normal GDS tool ECM upgrade procedures.
NOTICE
Do NOT attempt to perform a Manual Mode upgrade unless Auto Mode fails. Always follow the instructions given on the GDS tool in either Auto or Manual mode. See table for Manual Mode passwords.
MANUAL MODE ECU UPGRADE PASSWORDS
7. When the GDS tool reports that the ECM upgrade has been successfully completed, click OK, turn OFF the ignition key, and wait at least 10 seconds before attempting to start the engine.
8. Check for Diagnostic Trouble Codes using the GDS and erase any DTCs stored such as EPS, ESC, and TPMS. Due to CAN BUS multiple DTC's maybe set during reprogramming.
AFFECTED VEHICLES & PRODUCTION RANGE:
2010 Model Year Forte/Forte Koup with 2.0L engine and Automatic Transaxle.
WARRANTY CLAIM INFORMATION