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 Injection Control
Injection Pattern
ECM conducts sequential injection (1 injection per 2 rotations of engine to each cylinder, suitable injection according to each cylinder's ignition order).
Injection when starting the engine
When starting the engine, ECM determines the amount of fuel injected according to conditions such as engine coolant temperature to make the starting smoother.
Also, conducts the starting control with stratified-charge combustion according to conditions.
Injection when driving normally
Normally, ECM determines the amount of injection to be an optimum air-fuel mixture ratio for homogeneous combustion.
Cut-in injection when acceleration
When accelerating, according to the opening speed of throttle valve, ECM conducts a cut-in injection adding to normal injection and improves accelerating performance.
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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