GDS ECU Software Reprogramming Procedure
GDS ECU SOFTWARE REPROGRAMMING PROCEDURE:Important Cautions for Reprogramming:
^ Reprogramming by GDS can only be performed by using the USB cable between a laptop and the VCI; wireless cannot be used for reprogramming.
^ Make sure the GDS laptop battery indicator at the bottom right of the screen indicates at least 25% battery charge remaining to be able to complete reprogramming; if not, charge the laptop or keep the AC adaptor connected while reprogramming.
^ Perform reprogramming with the ignition key in the ON position.
^ Turn off all lights (do not leave headlight switch in auto mode) and all accessories (including heater/air conditioner/blower, radio, heated seat, rear defroster, etc.) to make certain the battery will not be discharged during reprogramming.
^ Be careful not to disconnect any cables connected to the vehicle during reprogramming.
^ Do not start the engine during reprogramming.
^ Do not turn the ignition switch OFF during reprogramming.
IMPORTANT:
Make sure to check the production date first to see if the vehicle is affected before attempting to update the vehicle's ECU software.
1. Connect the GDS VCI module to the vehicle's DLC connector and the USB cable between the VCI and GDS laptop's USB port.
2. Turn on the vehicle ignition and make sure the green power LED is lit on the VCI if it is not lit press on the power button of the VCI. Within a few seconds, the GDS screen should indicate VCI:USB On in bright blue to the left of the VIN button on the screen.
NOTE:
You must have an internet connection to GDS to be able to receive any updated data; the bright blue "Internet On" should illuminate to the left of the VIN button.
NOTE:
If a GDS internet update is available, it could take up to several minutes to download and complete the update.
3. Make sure the GDS has the latest data by pressing the bottom right Internet Update button on the GDS screen. You will get a confirmation on the GDS screen if it is already updated; otherwise the Download Start button will be viewable and should be pressed to update the GDS.
4. Press the VIN button at the top of the screen to launch the GDS VIN search screen.
5. Press the VIN Auto Detect button to automatically read the vehicle's VIN (or you will need to manually enter vehicle, year, and engine if it does not automatically read this information) then press A/T (Automatic Transaxle) for system followed by the OK button at the bottom of the screen.
6. Press the ECU Upgrade button on the screen shown.
7. In the left column of the following ECU Upgrade screen select Auto Mode followed by AT, then the OK button as shown.
8. The screen shown occurs as GDS is reading the ECU CURRENT ROM ID.
9. After the ECU ID is read make a note of the current ROM ID in case the reprogramming does not complete in auto mode. If it does not reprogram automatically, you will need the ROM ID to perform a manual mode reprogram attempt.
10. The screen will automatically display Upgrade Event 90.HD 2.0 TCU SPEEDOMETER - 088601 for vehicles produced from Aug. 1, 2006 through Nov. 21, 2006 OR 91.HD 2.0 TCU SPEEDOMETER 088602 - for vehicles produced from Nov. 22, 2006 through May 28, 2007. Select the appropriate event and press the UPGRADE button as shown in the screen.
11. Select OK to confirm you are correctly following these TSB instructions.
12. Reprogramming of the ECU will begin starting with the screen shown and gradually show the progress on the bar.
13. After 1-2 minutes the progress bar will complete, but make sure to wait for the success confirmation pop-up screen that indicates reprogramming has been completed.
14. Turn the ignition off for 10 seconds, then turn it back on to reset the ECU.
15. Click OK to reset the automatic transaxle adaptive learning values after updating the ECU.
16. Finally check that no incidental DTCs have been created by the reprogramming and, if there are, that they don't return after being cleared. If they return after being cleared, follow the diagnostic directions for that DTC.