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.
Fuel Enable Output
Fuel enable circuit is an output from theft deterrent module assembly and an input to ECM. When theft deterrent module assembly sees proper resistance at ignition key assembly, it will output a Pulse Width Modulated (PWM) signal to ECM. If theft deterrent module assembly does not see correct resistance at ignition key assembly, it will not output PWM signal to ECM.
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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.