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.
Driver Notification
SDM warns driver of SIR system malfunction by controlling AIR BAG warning light.
SDM is connected to SIR wiring harness by a 20-pin connector. Harness connector utilizes a shorting bar across certain terminals in contact area. Shorting bar connects AIR BAG warning light to ground when SDM harness connector is disconnected. This causes AIR BAG warning light to come on steady whenever ignition is on.
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.