Grand AM V6-3100 3.1L MFI VIN M (1994)
Transmission Position Switch/Sensor: Description and Operation
Gear Select (PRNDL) Switch
Transmission Range Switch Wiring Schematic
PURPOSE
The gear select (or transmission range) switch indicates to the PCM which position the transmission shift lever is in. The PCM uses this input to
determine when and how to control the shift solenoids inside the transmission.
OPERATION
The gear select switch actually contains four switches. The PCM detects the desired gear range by monitoring which combination of switches is
"ON" or "OFF" (see illustration.)
Important
Vehicle should not be driven with transaxle range switch (4T60E) or park/neutral position switch (3T40) disconnected, as idle quality and
transaxle performance will be affected.
