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 Control: Notes
ECM controls fuel system based upon sensor input signals. If feedback system does not function properly, check input signals before replacing ECM.
| Application | Model Usage | ||
|---|---|---|---|
| Battery Voltage | J30 | ||
| Closed Throttle Position Switch | J30 | ||
| Crankshaft Position Sensor | J30 | ||
| EGR Temperature Sensor | J30 | ||
| Engine Coolant Temperature | J30 | ||
| Heated Oxygen Sensor | J30 | ||
| Ignition (START) Signal | J30 | ||
| Mass Airflow Sensor | J30 | ||
| Park/Neutral Switch | (1) J30 | ||
| Power Steering Pressure Switch | J30 | ||
| Throttle Position Sensor | J30 | ||
| Vehicle Speed Sensor | J30 | ||
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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.
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