Grand Cherokee 4WD V8-4.7L Flex Fuel (2009)
Dimmer Switch: Description and Operation
Left Multifunction Switch - Description
DESCRIPTION
The left (lighting) multi-function switch is located on the left side of the steering column, just below the steering wheel. This switch is the primary
control for the interior and exterior lighting systems. The only visible components of the switch are the control stalk (2), control knob (1) and control
sleeve (3) that extend through the steering column shrouds on the left side of the column. The remainder of the switch including its mounting provisions,
its electrical connections, and the turn signal cancel actuator are concealed beneath the shrouds.
The switch housing (2) and controls (1) are constructed of molded black plastic. Each of the switch controls has white International Control and Display
Symbol graphics applied to it, which clearly identify its many functions. A single screw (7) through a mounting tab integral to the switch housing, and a
slide tab integral to the bottom of the switch housing secure the switch to the mounting bracket integral to the clockspring (3).
The Steering Control Module (SCM) is internal to the switch housing. The switch outputs are internally connected directly to the SCM. A single
connector receptacle containing seven terminal pins is integral to the inboard end of the switch housing and connects the right multi-function switch (6)
through a jumper wire harness (5) directly to the SCM. An integral connector receptacle on the back of the switch housing connects the SCM to the
vehicle electrical system through a dedicated take out and connector of the instrument panel wire harness.
The left (lighting) multi-function switch provides the vehicle operator with a control interface for the following exterior lighting system functions:
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Automatic Headlamps - For vehicles so equipped, the left multi-function switch control knob provides detent switching for the optional
automatic headlamps.
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Front Fog Lamps - For vehicles so equipped, the left multi-function switch control knob provides detent switching for the optional front fog
lamps.
