Ch 6 page 14 ELECTRICAL SYSTEM Updating transmission software: 1. Open the CANPC program. 2. Select the TCU by left-clicking it once. 3. Select the “Download software” button. This will open the update menu. Figure 20 4. Select the software to install. Only the software valid for the actual type of transmission will be displayed. NOTE On some units both the current and new software will be available for download. 5. Make sure all the criterias for safe start of the download are fulfilled. Engine Off. Truck not moving. Parking brake ON. Select the download button to start the update. Figure 21 SHOP MANUAL