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.
Control System
* SFI system
The SFI system monitors the engine condition through the signals received from various sensors by the engine control module. And control signals are output from TERMINALS #10, #20, #30, #40 of the engine control module to operate the injectors (Inject the fuel). The SFI system controls the fuel injection operation via the engine control module in response to the driving
conditions.
* ESA system The ESA system monitors the engine condition through the signals received by the engine control module from the various sensors. The best ignition timing is determined according to this data and the data stored in the engine control module and control signals are output from TERMINALS IGT1, IGT2, IGT3, IGT4. These signals control the igniters to provide the best ignition timing for the driving conditions.
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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.