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Active front steering control unit

The AL control unit is fitted in a protective housing on the floor of the vehicle in the left-hand footwell. The purpose of the AL control unit is to activate the servomotor of the active steering. In addition, the AL control unit processes the rotor position sensor signals. A temperature sensor in the AL control unit monitors the output stage for the servomotor.

Integrated Chassis Management (ICM) is the higher-level control unit for the suspension control systems.

The control unit for the active steering is connected across 4 plug connections to the vehicle electrical system. The AL control unit is equipment attached to the bus on the FlexRay.

Fig 1: Control Unit For Active Steering
G09872678Courtesy of BMW OF NORTH AMERICA, INC.
Index Explanation
1 Control unit for active steering (AL)
2 Twelve-pin plug connection (wiring harness)
3 Plug connection 3-pin (voltage supply)
4 Three-pin plug connection (servomotor)
5 Twelve-pin plug connection (sensor and electric servomotor lock)
6 Protective housing