Shift Interlock: Description and Operation

DESCRIPTION
A shift interlock mechanism prevents vehicles with an automatic transaxle from shifting out of the PARK position unless the brake pedal is applied. The floor shift interlock system consists of the following components:
- solenoid assembly attached to the key interlock assembly.
- a bracket retaining the solenoid.
- necessary wiring.

OPERATION
System operates as follows:
- The solenoid is energized when the ignition switch is turned to the RUN position. This locks the floor shifter in the PARK position.
- When the brake pedal is applied and the stoplight switch is activated, the shift lock solenoid is deactivated and the gearshift lever can be moved out of the PARK position.
- The ignition/shifter interlock locks the gearshift lever in the PARK position when the ignition switch is in the LOCK position. The key removal inhibit solenoid in the steering column requires the gearshift lever to be in the PARK position to turn the ignition switch to the LOCK position.