To check the data BUS drive, first disconnect the connectors from all the control units (engine control unit -J220-, automatic gearbox control unit -J217-, ABS control unit -J104-, power steering control unit -J500-, control unit with display in dash panel insert -J218-, airbag control unit -J234- and vehicle voltage control unit -J519-). Only then is it possible to check the data BUS wiring for short circuits and for short circuits to earth and positive terminal. |