It will test the vehicles link connector (OBD port) for any abnormality such as shorting, reverse polarity at the pins before the diagnostic tool (scanner) is plugged into the DLC. This will prevent damage to your expensive scan tool. It shows live display of communicating signals, if present e. Communication protocol signals, manufactures assigned pins, for quick pointing of faults without having to measure them.It provides quick access to all 16 pin connections during repair and diagnosis of the vehicle. It monitors the input voltage during chip programming with low voltage alarm. It tests individual pin voltage to see if present. A full VAT invoice will be supplied. See the PowerProbe section within our shop. For more great PowerProbe products and spare parts. The item "Power Probe PowerProbe PPECB CAN break out box OBD Diagnostic port tester BPBOB" is in sale since Friday, November 8, 2019. This item is in the category "Vehicle Parts & Accessories\Garage Equipment & Tools\Diagnostic Equipment & Tools\Other Diagnostic Service Tools". The seller is "mobilecentre" and is located in Evesham. This item can be shipped worldwide.