Service Procedure
^ CAUTIONS DURING CONTROL UNIT UPDATE1. Make sure the vehicle's battery has reasonable charge. If the vehicle has been in storage for days, run the engine to assure an adequate battery charge state for reliable update results.
2. 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 make certain the battery will not be discharged during update.
3. Perform update with the ignition switch in the ON position.
4. Be careful not to disconnect any cables connected to the vehicle or scan tool during update.
5. Do not start the engine during update.
6. Do not turn off the ignition switch during update.
^ CONTROL UNIT UPDATE PROCEDURE
A. GDS (Global Diagnostic System) INSTALLATION PROCEDURE
1. Connect the power supply connector to the diagnostic terminal.
NOTE:
If attempting to perform the update with the power supply cable disconnected from the diagnostic terminal, make certain that the diagnostic terminal is charged enough for the update. If not, the update may fail in progress. Therefore, it is strongly recommended to connect the power supply cable to the diagnostic terminal during the update procedure.
2. Connect the USB cable between the VCI and the diagnostic terminal.
NOTE:
When performing the update using the GDS, wireless communication between the VCI and the diagnostic terminal is NOT available. Therefore, be sure to connect the USB cable between the VCI and the diagnostic terminal.
3. Connect the 16-pin DLC cable from the VCI into the vehicle's DLC connector under the driver side instrument panel.
4. Turn on the VCI and diagnostic terminal with the ignition key in the ON position.
NOTE:
Do not start the engine.
B. AUTOMATIC UPDATE PROCEDURE
IMPORTANT:
You should always perform a GDS ECM update by Auto Mode as it has error checking to ensure the correct data is flashed for the vehicle. Do not use Manual Mode unless you experience a failure during the reflash process and need to reflash again.
1. Choose VIN on the initial screen.
2. Enter the vehicle information by 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 and click OK.
5. The GDS will read the vehicle's ROM ID.
6. After the Current ROM ID is displayed, select Upgrade Event #126, which is the latest 2007MY CM 3.3L ECM UPDATE:
7. After clicking the Upgrade button, read Information then click OK.
8. The vehicle battery voltage is checked to make sure it is at least 12 volts to assure 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 assure an adequate battery charge state for reliable update results.
9. Update will begin and the progress of the update will appear on the bar graph.
10. Update 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.
11. Click OK on the final screen, which indicates update is complete.
12. Check for any diagnostic trouble codes (DTC) and erase the DTC(s) present.
13. Start the engine to confirm proper operation of the vehicle.
C. MANUAL UPDATE PROCEDURE:
CAUTION:
Manual update should be performed only if automatic update fails.
1. Turn the ignition key to the OFF position, pull out the PCM (ECM) fuse from the engine compartment junction box or disconnect the battery negative cable to reset the control unit before performing manual update. Turn the ignition key back to the ON position.
2. Within the ECU Upgrade screen, select Manual Mode in the left column, then select Upgrade Event #126. Select the appropriate control unit part number with reference to the above ROM ID Information Table and click OK.
3. Enter the appropriate password from the table above, then click OK.
4. The vehicle battery voltage is checked to make sure it is at least 12 volts to assure 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 assure an adequate battery charge state for reliable update results.
5. Update will begin and the progress of the update will appear on the bar graph.
6. Update 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.
7. Click OK on the final screen, which indicates update is complete.
8. Check for any diagnostic trouble codes (DTC) and erase the DTC (s) present.
9. Start the engine to confirm proper operation of the vehicle.