Communication System Diagnostics

Before proceeding to the pinpoint tests, review equipment level of vehicle. Make note of module and systems with which vehicle is not equipped. Before proceeding to a pinpoint test, make sure DTC being diagnosed is referencing a module or system which the vehicle is equipped with. The New Generation Star (NGS) tester may produce a no response/not equipped network DTC for no communication if the vehicle is not equipped with the suspect module or system. The New Generation Star (NGS) tester will interpret a not equipped module as a communication failure. If a DTC is retrieved for a not equipped module or system, disregard this DTC. If a no response/not equipped DTC is the only DTC retrieved the communication system, self test should be considered passed.