DTC P0721 A/T Output Speed Sensor Circuit - Open Or Short (GND): General Description

The Output Speed Sensor outputs pulse-signals according to the revolutions of the output shaft of the transmission. The Output Speed Sensor is installed in front of the Transfer Drive Gear to determine the Transfer Drive Gear RPMs by counting the frequency of the pulses. This value, together with the throttle position data, is mainly used to decide the optimum gear position.