Vehicle Speed Sensor
NOTE:
On Elantra, vehicle speed sensor is built into instrument cluster. Testing information is not available from manufacturer.
Disconnect vehicle speed sensor harness connector. Remove vehicle speed sensor. Apply battery voltage to terminal No. 3 and ground terminal No. 2 at vehicle speed sensor. See Fig 1. Connect positive lead of voltmeter to terminal No. 1 and negative lead to terminal No. 2 at vehicle speed sensor. Rotate vehicle speed sensor manually. Voltage should change from zero to 11 volts or more 4 times per revolution. If vehicle speed sensor does not test as specified, replace vehicle speed sensor.