Ignition Can/Cannot Be Turned Off With Transmission In Any Gear
Ignition Can/Cannot Be Turned Off with Transmission in Any Gear
Circuit Description
If the vehicle is equipped with a floor mounted console gearshift, an ignition lock cylinder control actuator system is used in the steering column. The purpose of the system is to prevent the ignition lock cylinder from being turned to the lock position while the transmission is in gear. This would also prevent the steering wheel from being locked. The system consists of an ignition lock cylinder actuator and a park position switch. The actuator contains a pin that is spring loaded out, to prevent the ignition lock cylinder from being turned to the lock position when the gearshift is not in PARK. The park position switch is located in the floor mounted gearshift assembly, as part of the automatic transmission shift lock control switch. The switch is closed with the gearshift in PARK, and open in all other positions
System Operation
When the gearshift is in the PARK position, the park position switch is closed. This applies voltage to the ignition lock cylinder actuator and the pin retracts, allowing the ignition lock cylinder to be turned to the LOCK position. When the gearshift is not in PARK, the park position switch is open. No voltage is applied to the ignition lock cylinder actuator and the spring loaded pin remains in the out position, preventing the ignition lock cylinder from being turned to LOCK. If vehicle power is lost while the ignition lock cylinder is not in the LOCK position, the system will prevent the operator from turning the ignition key to the lock position or removing the key. If the vehicle has lost power, pushing the ignition lock cylinder release button on the underside of the ignition lock cylinder will override the system and allow the key to be removed.
Test
