Key Interlock System

Key interlock system prevents ignition key from being removed from ignition lock assembly on steering column unless selector lever is in Park. When ignition key is in ignition lock assembly, key interlock switch closes, providing voltage to key interlock solenoid and interlock control unit.

If selector lever is not in Park, interlock control unit energizes key interlock solenoid by completing ground circuit. When key interlock solenoid is energized, ignition key cannot be removed from ignition lock assembly. Key interlock switch and solenoid are located on ignition lock assembly.