How is injector pulse width calculated?

Now we can see how much actual time this represents by multiplying the actual amount of time in 100% of the cycle by the duty cycle to get an actual injector pulse width. Example: 20 ms x . 592 = .

Why does my fuel injector have a long pulse width?

You can observe problems with the fuel injector in a variety of ways. A fuel smell coming from the engine compartment, for example, might mean that the fuel injector is creating a pulse width that is too long. A misfiring of the engine or a decrease in power, acceleration, or speed might be symptoms of a failing fuel injector.

How does the fuel injector driver work in a PCM?

The fuel injector driver is an integral part of the PCM or the electronic fuel injection (EFI) controller (if applicable). The PCM controls injector timing and pulse width by applying a ground pulse to the circuit at exactly the right instant.

What causes no power to fuel injector pulse?

Ans: The engine control unit is the electronic brain that used to control the fuel injector pulse by gathering data from various sensors along the fuel line Question: What causes no power to fuel injectors?

How does the engine control unit control the injector pulse?

Question: What controls the fuel injector pulse? Ans: The engine control unit is the electronic brain that used to control the fuel injector pulse by gathering data from various sensors along the fuel line

What does the pulse width of an injector mean?

This “ON” or “OPEN” time is known as the injector pulse width, and increasing or decreasing the pulse width either increases or decreases the volume of fuel that is ultimately injected into the engine during an injection event.

When to use fuel injector circuit wiggle test?

Moving the wiring harness can be done to check the integrity of connections at the FICM and injectors. Fuel injector circuit wiggle test can be used only with engine running (KOER) due to the fact the FICM determines injector circuit faults by monitoring low or high injector current.

How to check the voltage of a fuel injector?

Checking Available Voltage At the Injector Verifying a fuel injector has the proper voltage to operate correctly is good diagnostic technique. Finding an open circuit on the feed circuit like a broken wire or connector is an accurate check with a DVOM.

The fuel injector driver plays an important part in the PCM or EFI (electronic fuel injection) controller (if applicable). By applying a ground pulse to the circuit at exactly the right time, the PCM controls the injector timing and pulse width.