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.
I-TEC Control System: Description
The I-TEC control system constantly monitors and controls engine operation. This lowers emissions while maintaining fuel economy and driveability. The Electronic Control Unit (ECU) controls the fuel injection system, ignition system, and turbocharger control system (if used).
The fuel injection system consists of the crank angle sensor, throttle valve switch, vehicle speed sensor, coolant temperature sensor, airflow sensor, oxygen sensor, 4 fuel injectors, and ECU.
The ignition system consists of the crank angle sensor, throttle valve switch, vehicle speed sensor, coolant temperature sensor, airflow sensor, knock sensor, a transistorized ignition coil, and ECU.
The turbocharger control system consists of the throttle valve switch, throttle position sensor, knock sensor, coolant temperature sensor, airflow sensor, oxygen sensor, stepping motor, turbocharger controller, and ECU.
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.
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