Operation CHARM: Car repair manuals for everyone.

Interlock




Interlock

The CAS module signals the "ignition key inserted or not inserted" status to the transmission control module. The parking lock is engaged in the transmission when "ignition key not inserted" is signalled. The parking lock can only be released when the ignition key is inserted, the engine is running, the brake pedal is depressed (Shiftlock) and R, N, or D is selected.