Component Placement Volvo Bus Corporation See also, 300, Component placement, Description, Design and function The reader is advised that printed copies are uncontrolled. 5 Symbol for control unit Symbol for intermediate connector piece in grey to show that it is placed behind a component (e.g. the engine). Symbol for intermediate connector piece that is shown where another illustration is missing. Symbol for control unit that is shown where another illustration is missing. Symbol for sensor/actuator that is shown where another illustration is missing. Symbol for branching point Symbol for branching point in grey to show that it is placed behind a component (e.g.
the electrical distribution unit).