How much voltage is generally available to injectors?
Voltage. Most injectors use 12 volts to energize the coil, and the driver energizes the circuit by pulling it to ground. When the injector is energized, the voltage drops to almost zero. If it does not, it could mean an open or weak connection in the wiring harness or open coils inside the injector.
How do you check fuel injector voltage?
Voltage Testing
- Turn the ignition key to the “On” position. You do not need to start the engine for this test.
- Disconnect the electronics plug wire from the fuel injector.
- Turn the multimeter to “volts.” Insert the black and red multimeter leads onto each side of the fuel injector electronics plug.
- Read the multimeter.
How to test fuel injectors-real easy?
How To Test Fuel Injectors – REAL EASY!! – YouTube How To Test Fuel Injectors – REAL EASY!! If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer.
How to check fuel injector resistance with a multimeter?
Learn how to check fuel injectors to make sure they are working. You use a multimeter on the resistance settings and measure the ohms of the injector. All injectors should be within .5 ohms of each other. If an injector is out of the resistance specification, that injector is bad.
How does the fuel injector work in a car?
A fuel injector is responsible for allowing fuel into the engine and is controlled by the PCM as part of the fuel injection system. Fuel pressure supplied by the fuel pump is metered by the duty cycle of the computer which varies by engine load.
How to ensure fuel injectors are receiving the correct range?
Step 1: Turn the car on. Turn the key to the second (ON) position for this test. You want battery power flowing, but don’t want the engine running. Step 2: Set up DVOM to measure DC voltage. Use the lowest range possible if the meter doesn’t auto range.