Nissan 31935-8E007 Sensor Assembly-Revolution

The primary speed sensor senses the speed of the primary pulley.

Disconnect the electrical connector from the vehicle speed sensor.

The transmission speed sensors are mounted on top of the transaxle.

CVT transaxles have three speed sensors: primary, secondary, and output. The primary sensor is on the outboard side, facing the left wheel. The secondary sensor is at the rear, facing the firewall, and the output sensor is at the rear, facing the left wheel. To replace these sensors, you should loosen the left front wheel lug nuts, raise the vehicle, remove the left front wheel, remove the left fender inner fender splash shield, disconnect the sensor electrical connector, remove the mounting bolt, and remove the sensor. Don't forget to discard the old O-ring and apply transmission fluid to the new O-ring during installation.