Wrangler 4WD L4-150 2.5L VIN P MFI (1998)
Transmission Position Switch/Sensor: Description and Operation
TRANSMISSION PARK/NEUTRAL SWITCH-PCM INPUT
The park/neutral switch is located on the transmission housing and provides an input to the Powertrain Control Module (PCM). This will indicate
that the automatic transmission is in Park, Neutral or a drive gear selection. This input is used to determine idle speed (varying with gear
selection), fuel injector pulse width and ignition timing advance. Refer to Transmissions, for testing, replacement and adjustment information.
