Service Procedure
Reprogram the WCM Control ModuleNOTE:
This procedure must be performed with release 6.05_SP4 or later. 6.05_SP4 release of StarSCAN(R) software can only be retrieved via the Internet. An update CD will not be sent to your dealership for this release. To update your StarSCAN(R) diagnostic tool via the internet, the StarSCAN(R) software must be at version 6.05 and properly configured to work with your dealership's network.
1. Open the hood, install a battery charger and verify that the charging rate provides approximately 13.5 volts.
2. Connect the CH9410 StarSCAN(R) ethernet cable to the StarSCAN and the dealer's network drop.
3. Connect the CH9404 StarSCAN vehicle cable to the StarSCAN and the vehicle.
4. Place the Ignition in the "RUN" position, then Power "ON" the StarSCAN.
5. Retrieve the old WCM part number. With the StarSCAN on the "Home" screen, follow the procedure below:
a. Select "ECU View".
b. Touch the screen to highlight "WCM" in the list of modules.
c. Select "More Options".
d. Select "WCM Flash".
e. Record the "Part Number" displayed at the end of the "Resident flash file for" statement near the top of "Flash WCM" screen for later reference.
6. Download the flash file from the internet to the StarSCAN. With the StarSCAN on the "ECU Overview" screen, follow the procedure below:
a. Select "Browse for New File". Follow the on screen instructions.
b. If the newly downloaded flash file "Part Number" description is the same as the number recorded in Step 5e, then the WCM module is up to date and no further action is required. If the part number is different, continue with Step 6c.
c. Select "Download to Scantool".
d. Select "Close" after the download is complete, then select "Back".
e. Highlight the listed calibration.
f. Select "Update Controller" and follow the on screen instructions.
g. When the update is completed, select "OK".
7. Disconnect the CH9404 StarSCAN vehicle cable from the vehicle. Wait until the StarScreen reads "Vehicle Disconnected", then press "OK".
8. Reconnect the CH9404 StarSCAN vehicle cable to the vehicle.
9. Retrieve the WCM part number. With the StarSCAN on the "Home" screen, follow the procedure below:
a. Select "ECU View".
b. Touch the screen to highlight "WCM" in the list of modules.
c. Select "More Options".
d. Select "WCM Flash".
e. Verify the "Part Number" (displayed at the end of the "Resident flash file for" statement) has been updated to the new part number. If it has updated, then the flash has been completed successfully.
NOTE:
Due to the WCM module programming procedure, a Diagnostic Trouble Code (DTC) may be set in other modules (PCM, TCM, BCM, MIC, ABS, etc.) within the vehicle, if so equipped. Some DTC's may cause the MIL to illuminate. From the "Home" screen select "System View". Then select "All DTCs". Press "Clear All Stored DTCs" if there are any DTCs shown on the list.