Trooper (2 Door) V6-3165cc 3.2L DOHC (6VD1) (1992)
/v6-3165cc_3.2l_dohc_(6vd1)/Page-130001.png)
Vehicle Speed Sensor: Description and Operation
Vehicle Speed Sensor (VSS)
PURPOSE
Provides the ECM with vehicle speed information.
LOCATION
Integral part of the speedometer assembly
OPERATION
The ECM applies and monitors a 12V signal to the sensor. When the drive wheels are turning, the sensor alternately grounds the circuit, creating a
pulsing action. The ECM calculates vehicle speed based on the time between pulses.
