Final answer:
On a hydraulically-controlled automatic transmission, a speed sensor is used to measure vehicle speed.
Step-by-step explanation:
On a hydraulically-controlled automatic transmission, a speed sensor is used to measure vehicle speed.
Here's a step-by-step explanation:
- A hydraulically-controlled automatic transmission uses fluid pressure to control the gears and shifting of the transmission.
- One of the key inputs required for proper operation is the measurement of vehicle speed.
- This is accomplished using a speed sensor that is typically mounted on the transmission or the differential.
- The speed sensor measures the rotational speed of the transmission output shaft or the differential and sends this information to the transmission control module.
- The transmission control module uses this information to calculate and control the shifting of gears based on vehicle speed.