how do I check injector duty cycle with a multimeter? - AudiForums.com


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Old 04-22-2011, 06:38 PM
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Default how do I check injector duty cycle with a multimeter?

I want to measure the injector duty cycle using a multimeter. There are two wires into the injector. I would think that I should ground one wire of the multimeter and tap into one of the injector wires. But which wire do I tap into? Or, do I not ground the multimeter wire and tap into both injector wires? I don't have a VAG-COM

1997 2.8.
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Old 04-22-2011, 07:28 PM
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To check duty cycle, you need something that can measure time; a multimeter generally cannot do this. If you have an oscilloscope you can find out the duty cycle by measuring the time between open/closed. Best way is VAG-COM since you can get readings direct from the ECU, but maybe somebody can chime in with another alternative (I can't think of any).
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Old 04-22-2011, 07:37 PM
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Vagcom or a scope. A meter won't react quickly enough (you're talking milliseconds) to show you anything.
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Old 04-22-2011, 07:54 PM
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My multimeter has a duty cycle setting. I just need to know what wires to probe. There are two on the injectors.
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Old 02-29-2016, 08:02 PM
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Quote:
Originally Posted by gregp1962 View Post
My multimeter has a duty cycle setting. I just need to know what wires to probe. There are two on the injectors.
Read this. Very helpful.


http://en-us.fluke.com/training/training-library/test-tools/digital-multimeters/how-to-measure-duty-cycle-with-a-digital-multimeter.html
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audi, check, checking, cycle, duty, injection, injector, injectors, measuring, multimeter, read, tap, test, voltmeter, wire

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