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.
Main use
The main uses of the Column Integration Module (CIM) include:
- Disengaging vehicle immobilizer using a transponder in the key and a receiver in the ignition switch (ISM).
Read more about immobilization under brief or detailed description.
- Controlling the steering column lock (SCL).
- Receiving information from the ISM and sending key position information on the bus.
Read more, see IGNITION SWITCH MODULE, ISM (20) , Ignition switch (ISM), brief description and Ignition switch (ISM), detailed description.
- Preventing the key from turning LOCK - ON before the SCL has been unlocked.
- Preventing the key from turning LOCK - ON before the car has stopped with the selector lever in P or N.
- Receiving radio signals from the integrated key remote control and sending a message on the bus regarding which button has been pressed.
- Reading the steering wheel levers and steering wheel button positions and sending information on the bus.
- Transferring current to the two driver airbag detonation circuits.
- Sends current steering wheel angle on the bus.
- Acting as a transfer point between the P-bus and the I-bus.
- Connecting the P-bus and the I-bus to the data link connector.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.