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.
Circuit Description
Direct Injection Engine has the system, which injects the fuel into the cylinder directly. The fuel is supplied from the low pressure pump is sent to the high-pressure pump and is pressurized to 5-10 MPa in the high-pressure pump. The fuel is injected into the cylinder with this high pressure.
Fuel flow of the low-pressure side is adjusted by the fuel pump controller, which is controlled by PWM signal from ECM. This line pressure is 350kpa at the normal condition and is 550kpa under the hot condition. ECM controls this pressure.
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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.