What is FI relay?
What is FI relay?
The PGM-FI Main Relay is actually comprised of two individual internal relays. This ground triggers one of the PGM-FI internal relays that sends battery voltage to the fuel pump for two seconds to pressurize the fuel system. When the engine is running the PCM supplies a continuous ground to the PGM-FI Main Relay.
What does PGM-FI do?
This feature helps provide outstanding power and driveability, with reduced emissions and better fuel efficiency36—plus easier maintenance and repair.
What is FI ECU fuse?
In a fuel injection (FI) system, the ECU controls the amount of fuel injected into the engine. This helps to provide the best possible engine performance.
What is the difference between PGM-FI and fuel injection?
The PGM-FI system relies on a piezoelectric sensor to indirectly measure the air quantity, and interprets the data using performance maps. Fuel is injected intermittently into the inlet ports. The PGM-FI also has a trailing throttle fuel cutoff and a self-diagnosis system.
What does LAF heater mean?
A special O2 sensor, called a lean air fuel (LAF) sensor, can be used to detect AF ratios in a range from approximately 12:1 to 22:1. The LAF sensors have only been used on the high efficiency Civic models. They are used on the 1992-95 Civic VX and the 1996-98 Civic HX. The LAF sensor is a somewhat complicated sensor.
Where is the ECU fuse Honda Civic?
You can also opt to pull the ECU fuse which is located under the hood in the engine compartment fuse box. Reinsert the fuse and start the car making sure to close the hood. Allow the car to idle for at least 10 minutes.
How does a PGM-FI main relay work?
One relay is energized whenever the ignition is on which supplies the battery voltage to the ECM, power to the fuel injectors, and power for the second relay. The second relay is energized for 2 seconds when the ignition is switched on, and when the engine is running, to supply power to the fuel pump. Relay Testing
Is the PGM-FI relay on a Honda Civic?
Due to the fact that the PGM-FI Main Relay is a critical component of the fuel injection system of your 1.6L Honda Civic, avoid buying a cheap knock-off brand-X relay. The following links will help you comparison shop for the Standard Motor Products and the original Honda Mitsuba relay:
Why is my PGMFI not working while driving?
It’s possible it’s just a faulty PGM-FI relay as its intermittent on starting only and is never an issue whilst driving.