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.
Discrete Power Mode Signals
Those modules that have Run/Crank signal inputs also remain in the state dictated by the last valid power mode message from the IPM or the RCDLR. They then check the state of their Run/Crank Ignition 1 voltage input to determine the current valid state. If the discrete ignition input is active, the modules will fail-safe to the Run power mode. If the discrete ignition input is inactive, the modules will fail-safe to Off-Awake power mode and shut down after a while if no other conditions require them to be awake.
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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.