Fault diagnosis, fault symptoms
📄 The diagnostic tool's screen does not go on when the ON button is pressed.
📄 No contact with any bus system
📄 The diagnostic tool's display shows "MISSING" for one or more systems.
📄 No communication with the Trionic T5
📄 No communication with Motronic
📄 EDC 15 missing in bus configuration list
📄 No communication with auxiliary heater
📄 No communication with TCM (cars with Trionic T5 or Motronic engine management system)