The tilt/telescoping steering column control system consists of an electronic control module with Class 2 serial data communication. The steering column power assembly with positioning motors and position sensors, are controlled by the tilt/telescoping control module and a steering column control switch. The steering column power assembly has two reversible DC motors for steering column position adjustment. One motor is for vertical (tilt) adjustment. The other motor is for fore/aft (telescoping) adjustment. Each actuator operates independently of one another. Each actuator cable has an attached position sensor. The rear junction block POWER T&T fuse supplies battery positive voltage to power the tilt/telescoping steering column module (SCCM) motor control. The rear junction block MEM T&T fuse also supplies battery positive voltage to the (SCCM) for position memory. Each of the column adjuster motor positions are sensed by the position sensors. The two sensors provide feedback signals to the control module which indicate both the steering column tilt up/down position and telescope in/out position. The module receives inputs from Class 2 messages over the serial data line, and from the steering column control switch. The module then commands the two DC motors to move the column to the required position.

The tilt/telescoping (SCCM) ground is provided at the right front door A-pillar ground splice pack.

The lock cylinder relay, which controls the column ignition lock system, is located in the rear fuse block. Power to the coil side of the relay is supplied by the vehicle battery at all times. Power for the switch side of the lock relay is also supplied by the vehicle battery at all times through the Reverse Lockout Fuse, which is also located in the rear fuse block. When the rear integration module (RIM) receives information that the transmission is in Park, and information that the ignition switch is in Unlock, RAP-Unlock, Run, Crank, or Accessory, it supplies a ground path for the coil side of the relay through the coil side control circuit, thus energizing the relay. This allows battery power to be applied through the switch side of the relay, and the switch side control circuit of the relay to energize the park key lock actuator. Ground is provided for the park key lock actuator through a circuit connected to a ground splice pack located near the left front corner of the passenger compartment, under the front of the sill trim plate. With the park key lock actuator thus energized, the mechanical pin is pulled inward and the ignition key cylinder can then be turned to the lock position.