PT Cruiser L4-2.4L (2008)
Steering Mounted Controls Communication Module: Description and Operation
Description
DESCRIPTION
This vehicle is equipped with a Steering Column Control Module (SCCM) that houses a clockspring (2), the left multi-function switch (1), and the right
multi-function switch (3). The SCCM is secured near the top of the steering column below the steering wheel and is completely concealed beneath the
steering column shrouds. The SCCM is installed as a modular unit that supports the left (lighting) multi-function switch (1) and the right (wiper)
multi-function switch (3). The controls for each of these switches extend through appropriate clearance holes provided in the steering column shrouds.
The SCCM utilizes integrated circuitry and information carried on the Controller Area Network (CAN) data bus along with several hard wired analog
and multiplexed inputs to monitor both the right and left multi-function switches, the ignition switch, the horn switch, and the speed control switches. In
response to those inputs, the SCCM controls and integrate many electronic functions and features of the vehicle through both hard wired outputs and the
transmission of electronic message outputs to other electronic modules in the vehicle over the CAN data bus. See: Body and Frame/Body Control
Systems/Description and Operation/Description.
