For 1990-2009 cars

### Ignition Lock Cylinder Actuator and Park Switch

The ignition lock cylinder actuator is a two wire solenoid with diode. The body control module (BCM) controls voltage to the ignition lock cylinder actuator. The ground side control of the actuator is controlled by a park switch which runs to ground. To diagnose the ignition lock cylinder and park switch refer to Ignition Can/Cannot Be Turned Off with Transmission in Any Gear .