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.
Restraint Deployment Indicator (RDI)
The RDI is an input signal sent from the restraints control module (RCM) to the PCM indicating an air bag deployment. The signal is a zero to VPWR 50% duty cycle, that is .83 Hz for a normal condition, and 5 Hz indicates a deployment event has occurred. Refer to SUPPLEMENTAL RESTRAINT SYSTEM .
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Use the Manual With the Right Hardware
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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.