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.
Auto Shutdown (ASD) Relay
A 12-volt input signal is delivered from ASD relay to Powertrain Control Module (PCM) when ASD relay is energized. If PCM does not receive a 12-volt input signal when ASD relay is energized, a Diagnostic Trouble Code (DTC) will be stored in PCM. ASD relay is located in power distribution center in engine compartment, near the battery. Auto Shutdown (ASD) relay may also be referred to as Automatic Shutdown (ASD) relay.
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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.