Input Shaft Speed Sensors
Input shaft speed sensor 1 measures the input speed and the rotating direction of the input shaft 1. The input shaft can be stationary. Therefore it is necessary, that the sensor system can detect the stationary state of the input shaft accurate. By being stationary the sensor must not indicate speed unequal to 0 (also not, if the motor runs by high speeds). The slow rolling of the car has to be detected safely.
Input shaft speed sensor 2 measures the input speed of the input shaft 2. The rotation direction is not measured.