K 2500 Truck 4WD V8-6.5L DSL Turbo VIN F (1995)
Vehicle Speed Sensor Signal Buffer: Description and Operation
Circuit Operation
The Vehicle Speed Sensor is a gear-driven Permanent Magnet Generator housed in the vehicle transmission. This sensor generates a sine wave output
with a frequency proportional to vehicle speed. The Vehicle Speed Sensor Buffer converts this signal to an output that is switched to ground at a
frequency of 4000 pulses per mile at the DK GRN/WHT (817 CKT) wire output. This output varies from 16 volts to battery voltage.
