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BMW M70 engine electronic throttle bodies

General Bosch ETBs

Electronic throttle body

  • Voltage: approx. 4.6V to 1V, depends on throttle flap angle

alt text

ETB cylinder 1..6 pinout

Pin# Function Description
1 Throttle flap angle >17° switch connected to EML, Pin 38, high (+5v) if flap closed
2 not used
3 Throttle actuator connected to EML, Pin 17, positive
4 not used
5 Throttle actuator connected to EML, Pin 35, negative
6 Throttle flap angle connected to EML, Pin 27
7 Sensor power (5V) connected to EML, Pin 12
8 Sensor ground (SGND) connected to EML, Pin 26

ETB cylinder 7..12 pinout

Pin# Function Description
1 Throttle flap angle >17° switch connected to EML, Pin 40, high (+5v) if flap closed
2 not used
3 Throttle actuator connected to EML, Pin 18, positive
4 not used
5 Throttle actuator connected to EML, Pin 34, negative
6 Throttle flap angle connected to EML, Pin 28
7 Sensor power (5V) connected to EML, Pin 11
8 Sensor ground (SGND) connected to EML, Pin 10