Service Procedure

GDS SYSTEM AND ECM UPDATE PRECAUTIONS:





CAUTION:
Please ensure the following items for 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 ensure 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 20% or more charge remaining. Charge the laptop battery with the AC adaptor cable if lower.

^ 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.

AUTOMATIC UPDATE PROCEDURE USING THE GDS:

1. Choose VIN or ECU Upgrade on the initial screen.





2. Enter the vehicle information by pressing the VIN Auto Detect button, entering the vehicle's VIN or selecting the vehicle model, model year, engine/fuel type and ENGINE as the system and then click OK.

3. Select ECU Upgrade on the initial screen after entering the vehicle information.

4. Select Auto Mode then ENGINE in the left ECU Upgrade column.

5. Read Preparation and click OK.

6. The GDS will read the vehicle's ROM ID.

7. After the Current ROM ID is displayed, select the Upgrade Event that appears in the pulldown list below:





NOTE:
When available choose a later Event # if it appears in the Auto Mode pulldown list.

8. After clicking the Upgrade button, read Information then click OK.

9. The vehicle battery voltage is checked to make sure it is at least 12 volts to ensure reliable update results. Click OK if the results indicate Voltage is OK.

NOTE:
If voltage is below 12 volts, click Cancel and then run the engine for 10 minutes or longer to ensure an adequate battery charge state for reliable update results.

10. Update will begin and the progress of the update will appear on the bar graph.

11. Updating will occur until 100% is reached on the bar graph. Turn the ignition key OFF for 10 seconds, place it back in the ON position and then click OK to continue according to Information displayed on the screen.

12. Click OK on the final screen, which indicates update is complete.

13. Check if any incidental Diagnostic Trouble Codes (DTC) have been created by the update and clear the DTC (s) present.

14. Start the engine to confirm proper operation of the vehicle.

MANUAL UPDATE PROCEDURE USING THE GDS:

CAUTION:
^ Manual update should be performed only when automatic update fails after the ECM update had begun showing the progress bar.

^ Pull out the ECM fuse from the engine compartment junction box or disconnect the battery negative cable for at least one minute to reset the control unit before performing the manual update. Turn the ignition key back to the ON position.

^ If neither of the above works, disconnect the connectors from the ECM for 10 minutes and try again.

1. Within the ECU Upgrade screen, select Manual Mode in the left column, then select the appropriate upgrade event# from the table below. Select the appropriate control unit part number with reference to the ROM ID Information Table and click OK.








2. Enter the appropriate password from the tables below and click OK.








CAUTION:
Be sure to select the correct vehicle and whether if has an immobilzer. Refer to the ECM part number label on back of the ECM if not sure.

^ IMMO = Vehicle with immmobilizer

^ NON IMMO = Vehicle without an immobilizer

3. The vehicle battery voltage is checked to make sure it is at least 12 volts to ensure reliable update results. Click OK if the results indicate Voltage is OK.

NOTE:
If voltage is below 12 volts, click Cancel and then run the engine to ensure an adequate battery charge state for reliable update results.

4. Update will begin and the progress of the update will appear on the bar graph.

5. Updating will occur until 100% is reached on the bar graph. Turn the ignition key OFF for 10 seconds, place it back in the ON position and then click OK to continue according to Information displayed on the screen.

6. Click OK on the final screen, which indicates update is complete.

WARNING:
For 2007 Vercruz after the update is completed, perform the VIN writing procedure and/or immobilizer key teaching procedure on the affected vehicles with reference to the "3. ECM ROM ID INFORMATION".





7. Check if any incidental Diagnostic Trouble Codes (DTC) have been created by the update and clear the DTC (s) present.

8. Start the engine to confirm proper operation of the vehicle.