DTC P0717: Input/Turbine Speed Sensor Circuit No Signal: Reference
WARNING: This page is about a different car, the 2004 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
Connect oscilloscope between "C51-1-8" (+) and "C51-1-16" (-) of PCM connector connected to PCM and check input speed sensor signal.
Fig 1: Identifying Oscilloscope Waveforms At Specified Idle Speed In "P" Range