Roadmaster Estate Wagon V8-350 5.7L VIN P SFI (1996)
Transmission Position Switch/Sensor: Description and Operation
The Park/Neutral Position (PNP) switch indicates to the Powertrain Control Module (PCM) when the transmission is in park, neutral or drive. This
information is used for the Torque Converter Clutch (TCC), Exhaust Gas Recirculation (EGR) and the Idle Air Control (IAC) valve operation.
CAUTION: Vehicle should not be driven with park/neutral position switch disconnected, as idle quality will be affected and a possible false
Diagnostic Trouble Code (DTC) 24 (Vehicle speed Sensor) may set.
The PNP switch is part of the neutral/start and backup light switch assembly. Refer to Diagnostic Tables / PNP Switch Check. See: Powertrain
Management/Computers and Control Systems/Testing and Inspection
