Overloading during the USB test

Fig 1: Display - Overloading During USB Test Screen

Courtesy of BMW OF NORTH AMERICA, INC.

The graphic shows a current limitation at approx. 300mA (1). The vehicle is not able to deliver the required level of current. Voltage level collapses and the current is therefore limited.

Troubleshooting:

The customer may have attached a USB hub (distributor) to the vehicle USB connection. Always run the USB test directly on the USB connection in the vehicle!
Check the USB connection.
Check lines and plug connections in vehicle.
Check control unit.

NOTE: If the test was not successful, a vehicle diagnosis must be carried out with ISTA!