position is also selected, and will automatically move the control knob to the rear fog lamp Off position when
the control knob is pushed in to deselect the front fog lamps.
•
Turn Signal Control - The turn signals are requested when the left multi-function switch control stalk is moved
downward (left signal) or upward (right signal). The control stalk has a detent position in each direction that
provides turn signals with automatic cancellation, and an intermediate, momentary “lane change” position in
each direction that provides turn signals only until the control stalk is released. When the control stalk is
moved to a detent turn signal switch position, a cancel actuator extends toward the center of the steering
column. A turn signal cancel cam that is integral to the clockspring, rotates with the steering wheel and the
cam lobes contact the cancel actuator when it is extended from the left multi-function switch. When the steer-
ing wheel is rotated during a turning maneuver, one of the two turn signal cancel cam lobes will contact the
turn signal cancel actuator. The cancel actuator latches against the cancel cam rotation in the direction oppo-
site that which is signaled. If the left turn signal detent is selected, the lobes of the cancel cam will ratchet past
the cancel actuator when the steering wheel is rotated to the left, but will unlatch the cancel actuator as the
steering wheel rotates to the right and returns to center, which will cancel the turn signal event and release the
control stalk from the detent so it returns to the neutral Off position. The left multi-function switch sends an
electronic switch status message over the LIN bus to the CCN, then over the CAN data bus to the other elec-
tronic modules in the vehicle.
INTERIOR LIGHTING
Following are descriptions of the how the left multi-function switch is operated to control the many interior lighting
functions and features it provides:
•
Interior Lamps Defeat - The interior lamps defeat feature is requested when the left multi-function switch con-
trol sleeve is rotated to the interior lamps defeat detent position. The left multi-function switch sends an elec-
tronic switch status message over the LIN bus to the CCN, then over the CAN data bus to the other electronic
modules in the vehicle.
•
Interior Lamps On - The interior lamps on feature is requested when the left multi-function switch control
sleeve is rotated to the interior lamps On detent position. The left multi-function switch sends an electronic
switch status message over the LIN bus to the CCN, then over the CAN data bus to the other electronic mod-
ules in the vehicle.
•
Panel Lamps Dimming - The panel lamps dimming function is active only when the left multi-function switch
control knob is in any exterior lighting On position. With the exterior lighting On, the panel lamps dimming level
is requested when the left multi-function switch control sleeve is rotated to any one of five minor detent posi-
tions. The left multi-function switch sends an electronic switch status message over the LIN bus to the CCN,
then over the CAN data bus to the other electronic modules in the vehicle.
•
Parade Mode - The parade or funeral mode is active only when the left multi-function switch control knob is
in any exterior lighting On position. With the exterior lighting On, the parade mode is requested when the left
multi-function switch control sleeve is rotated to the parade mode detent position. The left multi-function switch
sends an electronic switch status message over the LIN bus to the CCN, then over the CAN data bus to the
other electronic modules in the vehicle.
PM
LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION
8L - 101