Operation CHARM: Car repair manuals for everyone.

Ignition Switch Interlock




Ignition Switch Interlock
(Mechanical System - No TCM Influence).








Since 1993, an additional safety feature has been added known as the ignition switch interlock. The system is a cable that is connected between the selector lever and ignition switch housing. The ignition switch cannot be turned to the lock position for removal until the transmission has been shifted into park.