Vehicle Speed Sensor
WARNING: This page is about a different car, the 1997 Isuzu Trooper. However, it is still accessible from the selected car via links, so may be relevant.
Remove instrument cluster. See INSTRUMENT PANELS article. Measure resistance between GND (ground) terminal and 4P terminal. See Fig 1 . Resistance should be 13,500-16,500 ohms to infinite resistance. If resistance is not as specified, replace speedometer.