Shift Interlock: Description and Operation

With the engine running of the ignition switch in the ON position and the shift lever in the "P" position, the shift lever cannot be shifted from "P" to another position unless the brake pedal is depressed. A signal is sent through the park switch to the safety lock controller and the shift lock solenoid energizes, preventing the shift lever form being moved. When the brake pedal is depressed, a signal is sent to the safety lock controller. The controller then deenergizes the shift lock solenoid and allows the shift lever to be moved.