Transmission Position Sensor/Switch: Description and Operation

Inhibitor Switch:

PURPOSE
Signals the ECU as to transmission operating range and prevents starting the vehicle except in "P" or "N" positions.

LOCATION
Right side transmission.

OPERATION
This is a rotary-type switch. The ECU uses gear position input from the inhibitor switch in its calculations for these outputs:
^ Fuel injection quantity
^ Idle speed control
^ Purge control
^ A/C cut-off
^ Igniter (timing control)