With DIAG+ you can use a standard personal computer to read and delete diagnostic codes, program vehicle parameters and end of line test (EOLT) the EBS, U-ABS and ITCM. The USB dongle allows communications between a standard PC and an ECU. Connections to the USB dongle are made through a cable connecting to a USB port on the computer and another cable connecting the diagnostic interface to the ECU. The vehicle parameter data is stored inside the ECU. It will remain intact even after electrical power is removed from the EBS, U-ABS and ITCM.