Vehicle speed sensors

Most modern vehicles have multiple speed sensors, all of which “talk” to the vehicle’s computer, which disseminates the information to various components which require it – called multiplexing. For example, the EEC (electronic engine control) may receive information from the Vehicle Speed Sensor (VSS) and then give it to the variable-assist power steering system, the anti-lock brake system (ABS), the instrument cluster, etc.

The VSS is usually located on the transmission or the rear differential assembly, depending on the vehicle make and model. Some vehicles may have more than one, such as a VSS specifically for the ABS.

Pinboard (MacAaron)

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