Vehicle Speed Sensor
WARNING: This page is about a different car, the 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
Remove vehicle speed sensor from transmission. Connect AC voltmeter (5-volt scale) between vehicle speed sensor terminals. See Fig 1 . Rotate vehicle speed sensor driven gear by hand. If voltage pulses are detected, vehicle speed sensor is okay. If voltage pulses are not detected, replace vehicle speed sensor.