You can use Automotive Diagnostic Command Set Toolkit 18.5 in VeriStand 2018 in the form of a custom device. Diagnostics-Custom-Device is offered at GitHub. It has a guide and makes a toolkit available in VeriStand. Please refer to the following link: Diagnostics-Custom-Device
NI Automotive Diagnostic Command Set helps developers design and implement a wide variety of automotive diagnostic applications for electronic control unit(ECU) production using protocols such as Keyword Protocol 2000 and Diagnostics on CAN. If you want to know more about this toolkit, please refer to the link below.