G 2500 3/4 Ton Van V6-262 4.3L VIN Z (1992)
-
Cruise control
-
ANTILOCK brake system.
CONSTRUCTION
The VSS is made up of:
-
Permanent Magnet (PM) generator (coil), which is mounted on the transmission.
-
Rotor (tooth), which is mounted on the output shaft in the transmission.
-
VSS Buffer, which is mounted to the control module bracket.
OPERATION
The VSS is a Permanent Magnet (PM) generator that produces a pulsing Alternating Current (AC) voltage as each rotor tooth nears the coil. As
the vehicle speed increases, the number of AC voltage pulses increase. The VSS buffer processes inputs from the VSS and outputs signal to the
speedometer control module and cruise module. The VSS buffer takes the voltage pulses from the VSS and uses them to open and close four solid
state output switches to ground at a rate proportional to vehicle speed. The VSS buffer is matched to the vehicle based on final drive ratio and tire
size.
