Transmission Position Sensor/Switch: Description and Operation

Park/Neutral Switch:

NOTE: Because different models and engine applications vary in wire colors, circuit numbers, and pin numbers, the above image is a typical example. Refer to COMPUTERS AND CONTROL SYSTEMS/SCHEMATIC AND ROUTING DIAGRAMS for specific schematic applications.

PURPOSE:

The PARK/NEUTRAL switch indicates to the computer when the transmission is in PARK or NEUTRAL. This information is used by the computer for ignition timing, Idle Air Control operation, and transmission Torque Converter Clutch (TCC) operation. DO NOT drive the vehicle with the PARK/NEUTRAL switch disconnected, since idle quality may be affected.