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.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.