XL-7 2WD V6-3.6L (2007)
Steering Wheel: Description and Operation
Steering Wheel and Column Description and Operation
The steering wheel and column has 4 primary functions:
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Vehicle steering
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Vehicle security
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Driver convenience
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Driver safety
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 column. At the
lower end of the column, the intermediate shaft connects the column to the steering gear.
Vehicle Security-Some Vehicle Models
Theft deterrent components are mounted and designed into the steering column. The following components allow the column to be locked in order to
minimize theft:
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The ignition switch
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The steering column lock
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The ignition cylinder
Driver Convenience
The steering wheel and column may also have driver controls attached for convenience and comfort. The following controls may be mounted on or
near the steering wheel or column.
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The turn signal switch
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The hazard switch
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The headlamp dimmer switch
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The wiper/washer switch
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The horn pad/cruise control switch
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The tilt or tilt/telescoping functions
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.
Ignition Lock Cylinder Control Actuator
If the vehicle is equipped with a floor mounted console gear shifter, it has a ignition lock cylinder control actuator system in the steering column. The
ignition lock cylinder control actuator's purpose is to prevent the ignition key from being turned to the OFF position when the transmission is in gear
and the vehicle may still be moving. The column ignition lock system consists of a ignition lock cylinder control actuator, and a Park position switch
that is located in the automatic transmission (A/T) shift lock control switch. The ignition lock cylinder control actuator contains a pin that is spring
loaded out to mechanically prevent the ignition key cylinder from being turned to the Lock position when vehicle transmission is not in the Park
position. If vehicle power is lost, and/or the transmission is not in the Park position the operator will not be able to turn the ignition key to the Lock
position and will not be able to remove the ignition key from the column.
Electronic Park Lock Description and Operation
If the vehicle is equipped with automatic transmission and a floor mounted console gear shift, it has an electronic park lock system (EPL). The EPL
system purpose is to prevent the ignition key from being turned to the OFF position when the transmission is in any position other than PARK and the
vehicle may still be moving. The EPL system consists of an ignition lock cylinder solenoid, and a park position switch that is located in the A/T shift
lock control switch. The ignition lock cylinder solenoid contains a pin that is spring loaded to mechanically prevent the ignition key cylinder from
being turned to the lock position when the vehicle transmission is not in the PARK position. If vehicle power is lost, and/or the transmission is not in
the Park position the operator will not be able to turn the ignition key to the lock position and will not be able to remove the ignition key from the
column.
