Front Wheel Speed Sensor On-Vehicle Inspection: Reference
WARNING: This page is about a different car, the 2008 Suzuki Grand Vitara, 2007 Suzuki Grand Vitara, and 2006 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
When using oscilloscope for this check, check if peak-to-peak voltage and waveform meet specification.
Peak-to-peak Voltage at the resistance (115 O) with wheel rotation
High voltage "a": 1360 to 1930 mV
Low voltage "b": 680 to 960 mV