Note. For circuit identification, see CONNECTOR IDENTIFICATION and/or WIRING DIAGRAMS .
Circuit Description
The Input Speed Sensor (ISS) provides transaxle input speed to the PCM. The ISS is a permanent magnet generator. The sensor mounts into the transaxle case, and maintains a slight air gap between the sensor and the drive sprocket. The ISS produces an AC voltage as the drive sprocket rotor teeth pass through the sensor's magnetic field. The AC voltage level increases as the turbine shaft speed increases. The PCM converts the AC voltage into a digital signal. The PCM determines actual turbine speed using the digital signal. The PCM uses the input speed to calculate torque converter slip speed and gear ratios. When the PCM detects an unreasonably large change in the input speed, in a very short period of time, then DTC P0716 sets.