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.
Circuit Description
Front end discriminating sensor is a crash sensing device used to detect frontal collisions. SDM uses signals from front end discriminating sensor to determine if frontal impact is sufficient enough to warrant air bag module deployment. SDM applies voltage to discriminating sensor reference circuit and monitors voltage at front end discriminating sensor reference circuit in order to verify circuit integrity. If SDM detects a malfunction within discriminating sensor circuit, a DTC will set.
NO RELATED
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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.