Column Shift Models

The shift interlock system consists of an electro-magnetic solenoid mounted on upper steering column. Brake Transmission Shift Interlock (BTSI) solenoid is energized by brake switch, completing ground circuit when brake pedal is depressed. With ignition switch in LOCK or ACC positions, the gearshift lever is locked in Park. With ignition switch in OFF positions, the gearshift lever is unlocked and allows gearshift lever to move to any position. This enables vehicle to moved in the event the battery is dead or removed. With ignition switch in ON/RUN position, gearshift lever is released from Park when brake pedal is depressed. The ignition interlock system also prevents the ignition switch from being returned to LOCK or ACC positions unless gearshift lever is returned to Park.