Warning signs that your Airbag Control Module might be failing include:
- The airbag warning light stays on, even after starting the car.
- The airbag warning light flashes intermittently.
- You get an error code related to the airbag system when using a scan tool.
- The airbags don't deploy during an accident. (This is a serious safety concern!)
- Other electrical problems occur in the car.
To test if the Airbag Control Module is the problem, a mechanic will:
- Use a scan tool to read the error codes in the airbag system.
- Check the wiring and connections to the module.
- Test the voltage and ground signals to the module.
- Sometimes, temporarily replace the module with a known good one to see if the problem goes away.
Common reasons why these modules fail:
- Water damage or corrosion.
- Electrical surges or shorts.
- Physical damage from an accident.
- Age and normal wear and tear.