Pontiac G5: No Key In Buzzer / No Headlight On Buzzer
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Date: 2020-08-05
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Comments and reviews: 10
Fred
You do nice work and I appreciate your intuitive attacks on electronic problems. But perhaps you don't fully understand the difference between resistance and impedance. A really good choke coil (say for a power supply) should have low DC resistance but high AC impedance. Same with high power loudspeakers. Low DC resistance but say 4 or 8 ohms of impedance at audio frequencies. The formula for impedance of a coil is
XL = 6. 28 x f x L
where
XL is the inductive reactance in ohms,
f is the frequency in Hertz, and
L is the inductance in Henrys.
When in series, a resistance and an inductive reactance are added at right angles, so 1 ohm of resistance and 1 ohm of inductive reactance (XL) give 1. 414 ohms of impedance. We can get into phase angles later.
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You do nice work and I appreciate your intuitive attacks on electronic problems. But perhaps you don't fully understand the difference between resistance and impedance. A really good choke coil (say for a power supply) should have low DC resistance but high AC impedance. Same with high power loudspeakers. Low DC resistance but say 4 or 8 ohms of impedance at audio frequencies. The formula for impedance of a coil is
XL = 6. 28 x f x L
where
XL is the inductive reactance in ohms,
f is the frequency in Hertz, and
L is the inductance in Henrys.
When in series, a resistance and an inductive reactance are added at right angles, so 1 ohm of resistance and 1 ohm of inductive reactance (XL) give 1. 414 ohms of impedance. We can get into phase angles later.
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Tim
And here I was hoping to see some new aftermarket speakers goin in haha you are 100% a man of your word. I am an aftermarket installer in Melbourne Australia and I will tell you that I personally always install something as though Im the guy that has to fix it later mate. The stuff you have removed in previous vids makes people like myself look like an asshole and theres nothing I hate more than that. Thanks for bein such a legend and helping us with your amazing technique. I have learned so much from your vids especially patience when installing and diag.
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And here I was hoping to see some new aftermarket speakers goin in haha you are 100% a man of your word. I am an aftermarket installer in Melbourne Australia and I will tell you that I personally always install something as though Im the guy that has to fix it later mate. The stuff you have removed in previous vids makes people like myself look like an asshole and theres nothing I hate more than that. Thanks for bein such a legend and helping us with your amazing technique. I have learned so much from your vids especially patience when installing and diag.
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rhkips
Very odd to see 0 ohms on a good speaker. Somethin' ain't right there. Keep in mind that what's printed/spec'd on the speaker is the impedance, rather than the resistance. The DC resistance you're measuring with your scope will always be below the rated impedance of the speaker, except in cases where you're measuring multiple drivers on one connection (Coaxial type vehicle speakers and the like. :)
Great video! Dunno why GMs are so prone to this issue, but I see it more often than I'd like to.
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Very odd to see 0 ohms on a good speaker. Somethin' ain't right there. Keep in mind that what's printed/spec'd on the speaker is the impedance, rather than the resistance. The DC resistance you're measuring with your scope will always be below the rated impedance of the speaker, except in cases where you're measuring multiple drivers on one connection (Coaxial type vehicle speakers and the like. :)
Great video! Dunno why GMs are so prone to this issue, but I see it more often than I'd like to.
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Patriot
the ohms rating is the load to an alternating current. it's based on inductance and frequency. to A DC ohm meter, the coil is just a bunch of wire. that's why you're not getting the residence you thought you would.
thanks for the video I have the same problem, both speakers also.
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the ohms rating is the load to an alternating current. it's based on inductance and frequency. to A DC ohm meter, the coil is just a bunch of wire. that's why you're not getting the residence you thought you would.
thanks for the video I have the same problem, both speakers also.
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Mike
nice video just to let you know car speaker are 4ohm house speakers are 8ohm and to do a quick test on the speaker u can touch a 9 volt battery to both terminals quickly and the speaker should move and make a light thud depending on polarity the speaker will go in or out
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nice video just to let you know car speaker are 4ohm house speakers are 8ohm and to do a quick test on the speaker u can touch a 9 volt battery to both terminals quickly and the speaker should move and make a light thud depending on polarity the speaker will go in or out
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Darkwolf06
Quick question Eric. At 2: 25 you say the locks don't lock when key in ignition. Thus, the ignition switch is good. So say you have a no crank no start condition on a similar model GM. Would that be a test to verify ignition switch failure or no failure?
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Quick question Eric. At 2: 25 you say the locks don't lock when key in ignition. Thus, the ignition switch is good. So say you have a no crank no start condition on a similar model GM. Would that be a test to verify ignition switch failure or no failure?
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Bruce
For the second time, my wife has walked by while watching your videos and commented that you look like Tim McGraw.
Ever get that? I didn't see it till she pointed it out.
The people I get compared to are slightly less flattering.
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For the second time, my wife has walked by while watching your videos and commented that you look like Tim McGraw.
Ever get that? I didn't see it till she pointed it out.
The people I get compared to are slightly less flattering.
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Harry
Resistance is a concept used for DC (direct currents) whereas impedance is the AC (alternating current) equivalent.
your tester is using DC. so it will not reflect the correct impedance. just so you know.
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Resistance is a concept used for DC (direct currents) whereas impedance is the AC (alternating current) equivalent.
your tester is using DC. so it will not reflect the correct impedance. just so you know.
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FrugalPrepper's
Someone else may have already said it, but speakers have 9 Ohms of Impedance (resistance at the alternating type of current they see for an audio signal. For DC it will almost always be 0 ohms.
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Someone else may have already said it, but speakers have 9 Ohms of Impedance (resistance at the alternating type of current they see for an audio signal. For DC it will almost always be 0 ohms.
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TractorMan104
Let me start off with as a southern boy you are my new favorite northerner! I've been working on cars and trucks my whole life and your videos are very informative and entertaining. Keep it up!
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Let me start off with as a southern boy you are my new favorite northerner! I've been working on cars and trucks my whole life and your videos are very informative and entertaining. Keep it up!
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