Ignition Switch

The mechanical key and lock cylinder is located on the steering column. The main electrical switching portion of the assembly is separate from the key and lock cylinder. The VTD portion of the ignition switch is the Passlock cylinder.

The Passlock (TM) lock cylinder is a locking cylinder that turns a magnet past a stationary hall effect sensor. When turned to crank, the hall effect sensor is latched which applies a fixed resistance to the Passlock(TM) signal data circuit. The voltage measured by the BCM on the Passlock(TM) signal data circuit is the Passlock(TM) data value.