Input Shaft Speed (ISS) Sensor
WARNING: This page is about a different car, the 2008 Suzuki Swift +, 2008 Pontiac Wave, and 2008 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
The input shaft speed (ISS) sensor (1) is located on the upper position of the transaxle and detects A/T input speed from the rotation number of the direct clutch drum. They transmit to transmission control module (TCM) as a signal.