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/System Description
2019 Buick Envision BaseSECTION Circuit/System Description
For an overview of the component/system, refer to: Supplemental Inflatable Restraint System Description and Operation
| Circuit | Description |
|---|---|
| Control - Terminal 1 | The output circuit is switched to 12 V to activate the component. |
| Control - Terminal 2 | The output circuit is switched to ground to activate the component. |
| Component | Description |
|---|---|
| F107 Steering Wheel Air Bag | The pyrotechnic unit contains an ignitor, which, when supplied with voltage, ignites the propellant in the gas generator. |
| K36 Inflatable Restraint Sensing and Diagnostic Module | The control module monitors several sensors that can detect a collision. When a collision is detected, the control module will trigger certain air bags and seat belt pretensioners, depending on the angle and severity of the impact. |
RENDER: 1.0x
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.