Forward Clutch Cylinder Revolution Sensor
WARNING: This page is about a different car, the 1996 Suzuki Esteem. However, it is still accessible from the selected car via links, so may be relevant.
This is a pulse generator type sensor (mounted on transaxle case) which detects revolution speed of forward clutch drum (input shaft). The TCM uses this signal to monitor revolution speed inputted into transaxle and compare it with that of the output revolution (vehicle speed) as determined by the Vehicle Speed Sensor (VSS).