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Vehicle speed sensor (vss) – AEM 30-71XX Infinity Stand-Alone Programmable Engine Mangement System Full Manual User Manual

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© 2014 AEM Performance Electronics

Infinity User Manual

Vehicle Speed Sensor (VSS)

The vehicle speed sensor can be VR or a hall-effect device. It is similar in function and wiring as
the cam and crank sensor but instead is used to detect wheel speed. This input is used for
various Infinity software functions. There are two basic types of vehicle speed sensors, variable
reluctance (VR or “mag”) and hall-effect.

Shown below is a Nissan vehicle speed sensor.