Patent ID: 7129716

Claim:
A system for a motor vehicle for characterizing one of multiple variants of an electrically controllable subassembly, the system comprising: a coding plug connectable to the subassembly; and an analyzer unit with a measurement input connectable directly or indirectly to at least one electric terminal of the coding plug, wherein the coding plug has a fixed electric wiring arranged such that a defined electric state is generable at the measurement input of the analyzer unit, wherein the electric state is detected by the analyzer unit and compared with stored data such that the defined electric state differentiable from all other states is assigned to each possible variant of the subassembly, and wherein the electric wiring of the coding plug is an ohmic resistor having a defined value, said resistor being connectable to the terminal of the coding plug assigned to the measurement input of the analyzer circuit, and a resistance value differentiable from all other resistance values being assigned to each possible variant of the subassembly.