Steering Wheel Movement Speed

Fig 1: Identifying Steering Wheel Module Function

Courtesy of VOLVO CARS OF NORTH AMERICA.

The steering wheel module (SWM) (3/254) informs the electrical power steering module (EPS) (4/99) about the actual steering wheel angle speed via the controller area network (CAN). This allows the electrical power steering module (EPS) to calculate the optimum desired value for the pump motor speed for optimum steering assistance, irrespective of the speed of steering wheel movements.