Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Module-Steering Control: Operation
The Steering Control Module (SCM) communicates via the Local Interconnect Network (LIN) serial data bus. This is an ultra-low voltage serial data bus that allows the following components to communicate with the Controller Area Network (CAN) B and C data buses.
- Steering Wheel Switches
- Horn
- Speed Control Switch
- Multi-function Switch
- Tilt/Telescoping Switch (if equipped)
- Steering Angle Sensor (if equipped with Electronic Stability Program (ESP))
- Steering Control Module (SCM)
The SCM changes the LIN communication to CAN communication and also stores Diagnostic Trouble Codes (DTC's) for the switches within the SCCM.
For removal and installation, disassembly and assembly of the SCCM, refer to the following:
- Removal of SCCM (Refer to STEERING/COLUMN/STEERING COLUMN CONTROL MODULE - REMOVAL) .
- Disassembly of SCCM (Refer to STEERING/COLUMN/STEERING COLUMN CONTROL MODULE - DISASSEMBLY) .
- Assembly of SCCM (Refer to STEERING/COLUMN/STEERING COLUMN CONTROL MODULE - ASSEMBLY) .
- Installation of the SCCM (Refer to STEERING/COLUMN/STEERING COLUMN CONTROL MODULE - INSTALLATION) .
The SCM is not serviceable and if found faulty, it must be replaced as a unit.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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