The steering wheel and column has 4 primary functions:
Vehicle Steering
The steering wheel is the first link between the driver and the vehicle.
The steering wheel is fastened to a steering shaft within the steering column.
At the lower end of the column, the steering shaft coupling connects the
upper steering shaft to the lower steering shaft. The lower steering shaft
connects to the steering gear.
Vehicle Security
Theft deterrent components are on the steering
column. The steering column lock and ignition switch cylinder (3) controls
the following functions:
• | Locking the steering column |
• | Locking the ignition switch |
• | Controlling the ignition system |
• | Controlling the accessory electrical system |
The ignition cylinder must be in the LOCK position in order to insert
the key. If the ignition cylinder is in the LOCK position and the steering
column lock is engaged, turn the steering wheel in order to relieve pressure
on the steering column lock. Turn the steering wheel and turn the key to the
ACC position in order to unlock the steering column.
Driver Convenience
Some models have a rake type of tilt function in order to increase driver
comfort and convenience.
Important: The tilt springs lift the column to the top tilt position with the tilt
lever in the down position. The tilt springs compensate for the weight of
the steering wheel, the steering column, and the SIR module.
Lower the tilt lever in order to adjust the position of the steering
wheel and column. Raise the tilt lever in order to lock the position of the
column.
The tilt components are not individually replaceable. The steering column
and the tilt controls may be serviced as a unit.
The turn signal and headlamp and windshield wiper and windshield washer
switch with levers and the inflatable restraint module coil assembly can
be serviced as a unit. The switch consists of the following components:
• | The turn signal switch (6) |
• | The headlamp switch (6) |
• | The headlamp dimmer switch (6) |
• | The windshield wiper switch (3) |
• | The windshield washer switch (3) |
• | The cruise control switch (3), if the vehicle has cruise
control |
• | The steering wheel inflatable restraint module coil (2) |
• | The turn signal switch base (1) |
Driver Safety
The energy-absorbing steering column compresses in the event of a front-end
collision, which reduces the chance of injury to the driver. The mounting
capsules break away from the mounting bracket in the event of an accident.
Park Lock System
The park lock system prevents the ignition lock cylinder from moving
to the LOCK position when the automatic transmission shift lever is in any
position other than Park. A cable is attached to the automatic transmission
shift lever and to the steering column lock and ignition switch cylinder.
Moving the automatic transmission shift lever out of the Park position
pulls the cable and prevents the ignition cylinder from moving to the LOCK
position. Moving the automatic transmission shift lever to the Park position
pushes the cable and allows the ignition cylinder to move to the LOCK position.
If the key is in the ACC position, push the key into the ignition cylinder
and rotate the key to the LOCK position in order to remove the key.