Pin 4 is generally used for the ignition switched signal.
After spending two weeks chasing ground loops and a phantom 5V reference drop, I finally put the multimeter down and mapped it properly. bosch me20 pinout verified
After extensive research and verification, we are providing a comprehensive Bosch ME20 pinout. Please note that pinouts may vary depending on the specific vehicle application, so it's essential to consult the vehicle's documentation and wiring diagrams to ensure accuracy. Pin 4 is generally used for the ignition switched signal
(Bottom Right) and potentially other pins depending on the specific harness variant. Ground (GND) bosch me20 pinout verified