S15/T15 Sonoma P/U 2WD V6-262 4.3L VIN W CPI (1994)
Transmission Position Switch/Sensor: Description and Operation
Automatic Transmission Electrical Components
PURPOSE
This device is a set of five presure switches (two normally closed and three normally open), that detect fluid pressure within the valve body passages
and signals the PCM which transmission range is selected (PRNDL).
OPERATION
The five pressure switches are connected to three signal circuits referred to as range signals A, B, C. The combination of pressure switch states
determines the voltage signal (B+ or 0) on each range signal to the PCM.
LOCATION
The transmission range fluid pressure switch assembly is attached to the control valve body within the transmission.
