Commander 4WD V8-4.7L VIN N (2006)
Shift Interlock: Description and Operation
MECHANISM-BRAKE TRANSMISSION SHIFT INTERLOCK
DESCRIPTION
The Brake Transmission Shifter/Ignition Interlock (BTSI) is a cable operated system that prevents the transmission gear shifter from being moved out
of PARK without the proper driver inputs. The system also contains a solenoid that is integral to the shifter assembly. The solenoid works in
conjunction with the park lock cable (5) to permit shifter movement out of PARK when the brake is depressed.
OPERATION
The Brake Transmission Shifter/Ignition Interlock (BTSI) is engaged whenever the ignition switch is in the LOCK (1) position. An additional
electrically activated feature will prevent shifting out of the PARK position unless the brake pedal is depressed at least one-half inch. A solenoid in the
shifter assembly is deenergized when the ignition is in the ON position and the brake pedal is depressed. When the key is in the ON position and the
brake pedal is depressed, the shifter is unlocked and will move into any position. The interlock system also prevents the ignition switch from being
turned to the LOCK position, unless the shifter is in the gated PARK position.
