Service Procedure
Reprogram the HVAC ModuleNOTE:
The StarSCAN must be at version 7.02 SP3 or higher before this procedure can be performed. The software release level is visible in the blue header at the top of the StarSCAN screen.
1. Open the hood and install a battery charger. Verify that the charging rate provides approximately 13.5 volts.
2. Use the following procedure to determine the HVAC module software part number:
a. Connect the StarSCAN to the vehicle data link connector located under the steering column and turn the ignition key to the "RUN" position.
b. Power ON the StarSCAN.
c. From the StarSCAN Home Screen, select "ECU View".
d. From the StarSCAN ECU View Screen, select HVAC from the list of modules.
e. Select "More Options" and then select "ECU Flash".
f. Record the part number displayed at the top of the "Flash HVAC" screen for later reference.
3. Connect the CH9410 StarSCAN ethernet cable to the StarSCAN and the dealer's network drop.
4. Select "Browse for New File" and follow the on screen instructions.
5. Highlight the calibration and then select "Download to Scantool".
6. Select "Close" after the download is complete, then select "Back".
7. Highlight the listed calibration.
8. Select "Update Controller" and follow the screen instructions.
9. When the HVAC update is complete, select "OK".
10. Verify that the part number at the top of the screen has been updated to the new part number.
11. After completing HVAC module reprogramming, clear all Diagnostic Trouble Codes (DTC's) using the following procedure:
a. Return to the "Main Menu" (Home Page)
b. Select "System View"
c. Select "All DTC's"
e. Select "Clear All Stored DTC's"
f. Follow the screen prompts.
12. Disconnect and remove the StarSCAN and battery charger from the vehicle.