RAM 2500 Truck 2WD L6-6.7L DSL Turbo (2010)
Wiper Switch: Description and Operation
Multifunction Switch - Description
DESCRIPTION
The multi-function switch is located on the left side of the steering column, just below the steering wheel. This switch provides the primary controls for
the wiper and washer systems, the turn signals and headlamp beam selection. The only visible components of the switch are the control stalk (2) and
control knob (1) 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 connection, 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 integral latch feature (3) and slide tabs on the switch housing engage
channels and a striker that are integral to the left side of the mounting bracket that is integral to the clockspring (5) to secure the switch to the steering
column.
The Steering Control Module (SCM) is an electronic circuit board and microprocessor internal to the multi-function switch housing. The switch outputs
are internally connected directly to the SCM. An integral connector receptacle on the back of the switch housing connects the switch through the SCM to
the vehicle electrical system through a dedicated take out and connector of the instrument panel wire harness.
The multi-function switch provides the vehicle operator with a control interface for the following functions:
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Headlamp Beam Selection - The multi-function switch control stalk provides detent switching for selection of the headlamp HIGH or LOW
beams.
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Headlamp Optical Horn - The multi-function switch control stalk includes momentary switching of the headlamp high beam circuits to provide
