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Home >> Saturn >> 1992 >> SL Standard >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Vehicle Speed Sensor (VSS)
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Vehicle Speed Sensor (VSS)

Depending upon vehicle application, VSS may be either a Permanent Magnet (PM) generator mounted in transmission or a Light Emitting Diode (LED) mounted in instrument panel cluster, behind speedometer. The VSS sends a pulsing signal to ECM, which ECM converts into miles per hour (MPH). This sensor input is used by ECM in controlling converter clutch engagement.