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Home >> BMW >> 2014 >> M235i Standard Trans >> Repair and Diagnosis >> General Information >> OEM General Information >> Functional Description - 2-Series (F22) - Steering System, Restraints System, Stability Control System, Tire & Wheel System, Lubrication System >> Steering System - Functional Description >> Electromechanical Power Steering (EPS) >> Brief component description >> EPS unit

EPS unit

The EPS unit consists of the following components:

The EPS control unit is a component of the electromechanical power steering. The EPS control unit is connected to the vehicle electrical system with 2 plug connections. The steering-torque sensor is connected via another plug connection to the EPS control unit.

Several characteristic curves for power assistance, active steering wheel return as well as damping characteristics are stored in the EPS control unit. The values calculated from the input variables added to each characteristic curve result in the necessary steering servo.

The EPS unit is powered by the engine compartment power distribution box with terminal 30B. The front power distribution box of the passenger's side supplies the EPS control unit with terminal 15N.

Fig 1: Identifying EPS Control Unit And Servomotor
G09873142Courtesy of BMW OF NORTH AMERICA, INC.

The arrangement of the connectors depends on the supplier.

Item Explanation
1 EPS unit with servomotor and EPS control unit
2 Plug connection to steering-torque sensor, six-pin (5 pins used)
3 Plug connection to vehicle electrical system, six-pin (3 pins used)
4 Plug connection, voltage supply, 2-pin