Vehicle Speed Sensor Test
Remove speed sensor from transmission. Jumper a 3000-10,000 ohm resistor between sensor terminals No. 1 and 3. Connect battery positive voltage to sensor terminal No. 1 and battery negative voltage to sensor terminal No. 2. See Fig 1 . Connect a voltmeter between sensor terminals No. 2 and 3. Manually turn speed sensor shaft. Voltage should pulse 4 times each revolution. Replace vehicle speed sensor if operation is not as specified.