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.
Electronic Control System
The electronic control system monitors engine operating conditions, processes the information, and controls the engine for optimum performance and minimum emissions.
Input signals are generated by the Engine Coolant Temperature (ECT) sensor, Manifold Air Temperature (MAT) sensor (1.8L turbo only), Manifold Absolute Pressure (MAP) sensor (1.8L turbo only), Mass Air Flow (MAF) sensor (3.8L V6 only), Exhaust Oxygen (O2) sensor, Throttle Position (TPS) sensor, Park/Neutral (P/N) switch, and Vehicle Speed sensor (VSS).
The ECM also receives signals from the starter solenoid (1.8L 4-cylinder models during cranking mode only), the air conditioner selector switch, and the ignition distributor.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.