Scan Tool Data Definitions

PNP Switch:  This parameter indicates the range selection of 3 speed or 4 speed automatic transmission equipped vehicles. The parameter will display Park/Neutral for the Park or Neutral position of the gear selector. The parameter will display In Gear for the Reverse, Drive, or Low positions of the gear selector.

Starter Switch:  This parameter displays ON when the powertrain control module (PCM) is receiving a signal indicating that the engine starter motor is cranking.