The drive and output speed sensors are sensors that operate according to the Hall sensor principle. Both sensors are located on the upper timing case. They are connected by means of a wiring harness and a connector with the electrohydraulic gearbox control module.
Both sensors are supplied by the gearbox control with a voltage of 8.3 - 9.3 V. When the C1234-C35 body and the output shaft turn, the sensors generate a signal frequency. This frequency is proportional to the speed of C1234-C35 housing and output shaft. This signal is transferred via each circuit to the electrohydraulic gearbox control module.
The drive and output speed sensors are a unit with wiring harness and connector. This unit can be replaced separately.
In the corresponding test module, the following faults are treated: