Traverse FWD V6-3.6L (2009)
Steering Wheel: Description and Operation
Steering Wheel Controls Description and Operation (Power Tilt)
Steering Wheel Controls Description and Operation (Power Tilt)
Tilt/Telescoping Switch Operation
The tilt/telescoping steering column has a four-position switch which may be used to adjust the position of the steering wheel in or out which is telescope
and up or down which is tilt. The position of the column may be changed as follows:
*
Press the switch up to tilt the column up.
*
Press the switch down to tilt the column down.
*
Press the switch forward and the column moves toward the front of the vehicle.
*
Press the switch rearward and the column moves toward the rear of the vehicle.
The steering column module (SCM) receives inputs from the tilt/telescope switch to manually move the column to a desired position. Pressing the
control switch sends an input to the SCM. The SCM receives an input and actuates the corresponding column motor.
Pressing the switch momentarily in either the UP or DOWN, or IN or OUT position, and releasing within 0.5 seconds, causes the column to advance
slightly in the corresponding direction then stop. This feature allows fine control of the steering column position in each direction. If the switch is
pressed and held for longer than 0.5 seconds, the column advances slightly in that direction, pauses, then resumes movement as long as the switch is
held.
Motors
Both the tilt and telescoping motors are reversible. For example, the tilt motor moves the column both up and down. When the SCM receives an input to
move the column up, the SCM supplies battery positive voltage and ground to the tilt motor in order to move the column up. When the SCM receives a
column down input, the SCM supplies battery positive voltage and ground to the same motor, but with a reverse polarity. When the voltage polarity is
reversed, the motor runs in the opposite direction and moves the column down.
Position Sensors
Two position sensors are used by the SCM to store column positions in memory and to return the column to the stored memory positions. The SCM
provides a 5-volt reference voltage and a ground to both the tilt and telescoping position sensors. The sensor feedback circuit voltage varies from
0.25-4.75 volts. Each sensor is mounted to its corresponding motor cable assembly. When the motor rotates its cable, the resistance of the sensor varies.
The SCM monitors the feedback voltage to determine the column position via the tilt and telescoping position sensor input circuits. When an entry or
exit position is saved, the SCM stores the column positions by recording each position sensor's feedback voltage. When an entry or exit position is
commanded, the module moves the motors until all the position sensor feedback voltages equal the feedback voltages stored in memory.
Tilt/Telescoping Memory
Memory settings and the personalization of steering wheel positions are available with the tilt/telescoping steering column. The data stored consists of
entry positions and exit positions. The entry position is the position that the steering column moves in when the ignition is turned ON. The exit position
is the direction that the steering column moves in when the ignition is turned OFF and the driver's door is opened.
An initial memory setting is set in the SCM at the assembly plant. This setting may be changed to suit the customer at the time of purchase or at anytime
in the future.
Entry/Exit Personalization
The SCM stores personalization information. The driver information center (DIC) is used to enable and disable the personalization feature in the SCM.
A Class 2 message is sent to the SCM, by the DIC, which specifies that the SCM enable the personalization feature until disabled again using the DIC.
The steering column control module can store 6 possible positions: 3 entry positions and 3 exit positions.
*
Driver 1 exit position, set using the memory switches
*
Driver 2 exit position, set using the memory switches
*
Default exit position which is all forward, all up, with no memory position set
*
Driver 1 entry position, set using the memory switches
*
Driver 2 entry position, set using the memory switches
*
Last known driver entry position which is when the ignition is turned ON by an unknown driver
Memory Setting
When the driver door switch assembly (DDSA) receives inputs from the memory function switch, the steering column personalization positions may be
