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Home >> BMW >> 2014 >> M5 Standard Trans >> Repair and Diagnosis (Single Page) >> General Information >> OEM General Information >> Functional Description - F10 - HVAC System, Steering System, Restraints System >> Steering System - Functional Description >> Electromechanical Power Steering (EPS) (Ver. 1) >> EPS unit
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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 Unit Related Components
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