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Home >> BMW >> 2013 >> 528i >> 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. 2) >> EPS unit
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EPS unit

The EPS unit consists of the following components:

The EPS control unit is part 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. A number of 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.

Depending on equipment specification, the EPS unit may also be supplied via terminal 30. The power distribution box in the junction box supplies the EPS control unit with terminal 15N.

Fig 1: Identifying EPS Unit With Servomotor
G09873150Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
1 EPS unit with servomotor
2 Plug connection to steering-torque sensor, six-pin (2 pins used)
3 Plug connection, voltage supply, 2-pin
4 Plug connection to vehicle electrical system, six-pin
5 EPS control unit