Utilizing Jaltest’s superior quality diagnostics platform allows TDI Fleet Services to perform multisystem diagnostics, covering most commercial fleet vehicles that are most utilized by our core customers. Understanding the solution to any issue begins with a quick and proper diagnosis, TDI’s diagnostic program includes communication protocols such as OBD, OBDII, J1939, J1708, EURO IV, EURO V, & it supports the RP1210 protocol.