Hyundai 42620-39200 Sensor Assembly-Input Speed

For models from 1996 through 2000, the Vehicle Speed Sensor (VSS) is a magnetic pick-up coil that converts transaxle gear revolutions into a pulsing signal voltage output for the PCM, emitting four pulses per revolution of the cable. To check the VSS, remove the instrument cluster, connect an ohmmeter to the indicated terminals on the backside, and rotate the speedometer drive, noting whether continuity fluctuates on and off four times per revolution; if it doesn't, the VSS should be replaced. For models from 2001 through 2006, the VSS is a Hall effect switch mounted on the transaxle that generates pulse signals in response to the rotating driven gear, producing a fluctuating voltage proportional to vehicle speed. To check this VSS, raise the front of the vehicle, inspect the connector and wires for corrosion or damage, and ensure they are secure. After plugging in the electrical connector, backprobe the ground and output terminals, then connect a voltmeter and rotate the left front tire while observing the voltmeter; a fluctuating voltage of zero to approximately 5.0 volts indicates proper function, and if not, the VSS should be replaced. For replacement, raise the vehicle, disconnect the electrical connector, remove the VSS mounting bolt, withdraw the VSS from the transaxle case, replace the O-ring, and install the new VSS in reverse order.