Schematic overview and setpoint values

The hall effect sensor is supplied with 5 Volts and ground by the DDE.

A bridge circuit (H bridge) is used to activate the servomotor. This permits activation of the servomotor in the opposite direction. The bridge circuit is monitored diagnostically. H-bridge designates an electrical gearshift with 5 shift elements in the shape of a capital H for shifting between.

Fig 1: Brake Fluid Expansion Tank, Brake Fluid Level Switch And Two-Pin Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Item	Explanation
1	EGR controller
2	Cam disc
3	Bucket tappet
4	Housing
5	Seat

Observe the following setpoint values for the EGR controller:

Variable	Value
Servomotor supply voltage	12 Volts
Activation frequency for servomotor	1300 Hz
Blocking current for servomotor	5 A
Hall effect sensor supply voltage	4.5 to 5.5 V
Power consumption of hall effect sensor	20 mA
Temperature range of hall effect sensor and servomotor	-40 °C to 140 °C