General Information

On manual transaxle vehicles the OSS is attached to the transaxle case near the left side inner CV joint. On CVT equipped vehicles, both input and output shaft speed sensors are internal to the transaxle and require transaxle disassembly for servicing. The OSS is a magnetic inductive pickup sensor, which uses a permanent magnetic surrounded by a coil of wire. As the differential rotates, an AC voltage is induced in the OSS signal wires. The OSS sensor produces an AC voltage of different amplitude and frequency depending on the velocity of the output shaft. The OSS produces the signal from the evenly spaced notches on the sensor rotor. The OSS produces a readable AC voltage signal when vehicle speed is above 5 km/h (3 mph). The OSS signal is sent to the ECM, which is used to determine the RPM of the output shaft.