For more on the types of troubleshooting procedures I demonstrate in this video, go to www.scannerdanner.com. In this video I show how to test the charging s…
How to test an Alternator (Mazda Miata case study part 1)
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I get it, I’ve been a mechanic for 27 years and I would have put an
alternator In that vehicle.
Great video with extremely good value.
Thanks!
great video. this is why some parts stores love those of us who think we
know but don’t know enough. hope to be checking out the other channel soon.
thanks Dan
your a genius man, very informative.
dude i have learn a lot from you. when i do alternator i use a test light
to do most test its a quick easy way. use the test light to check the heavy
gauge wire with the test light on ground we get we know that main
alternator fuse is good. then you check smaller gauge wires. what i
normally do is disconnect the connector in your case, you should find the
test light for one of the wire when ignition at run. all alternator
regulator the pin that goes to the warning send out negative as learn from
you be component in this case the regulator. so with test on ground and
touch the light if the gauge fuse is good the battery should come in the
dash but you have to know your circuit
Scanner Danner: I tough that the white and black wire should have positive
all the time while the car is running. Since the positive goes trough the
light bulb. Unless its a a internal problem with the alternator, that is
when the alternator give a ground to the light bulb and the light comes
on.So i think seeing the 0.2 volts at the start on the diagnostic at the
white and black wire, was an indication that we were missing the positive
or having an alternator problem, but not saying the alternator is bad yet
before applying a positive to the wire as you did.
thanks Dan another great video.
Great example of thorough diagnostics.
Mr Danner. Every time you pull out a wiring diagram and trace the different
components of the circuit you are performing a great tutorial . I share
your enthusiasm for Mitchell diagrams and sometimes feel lost without it.
Auto electric[s] used to be a separate discipline, but this is no longer
the case.
paul you have to learn how to crawl and walk before running.what am saying
is learn schematic for the specific system. now if you know what and how
system works youl know how to fix ir.great video my friend sorry about
those lacking knowdledge in the automotive industry.thank you have showing
us more knowdledge than wahat we already know.i have 30 years under my belt
with a master status and L1 cert whish wasnt easy to pass.in this great
industry you never stop learning.thank you greatly rick.
Thumbs up for the video Paul! How about an alternator study video?
Comparison between different manufactures? Bosch, Delco, Valeo, I know they
have quite different internals. Think it would be interesting. Keep up the
work!
You “heard” the L1 was easier than the Engine Performance test? What
dreamer told you that? A recorded fact on the L1: 70 percent of the techs
who take the L1 “FAIL” on their first attempt at it. My passing it was my
first attempt at it – with a perfect score to boot. I’ve also been an ASE
Master Tech for the last 27 years. I challenge you to attempt the L1 – then
tell me just how “easy” it was. Please share your credentials with us so we
can learn from you.
Great video Paul, never seen this before. So if a charging problem exists
always check for the charge lite with the KOEO on all cars? Video
suggestion, parasitic drain caused by the ALT. Replaced the ALT. and
problem went away. It was on a 93 E-150 with a 5.0 engine. Don’t exactly
know why but I suspected a diode problem even though the diodes checked out
ok on our test equipment.
No a voltmeter is a high input impedance device therefore you couldn’t draw
high current. Now if you screwed up and had it set up as an Ammeter you
would probably blow the fuse in the meter if the battery cable to bat
terminal connection was bad enough. But there would never be any reason to
be hooked up like this with the meter set up as an ammeter. That said I
have made mistakes and done similar things the only result being having to
replace the fuse in my meter.
no I’m not, got tons to learn myself my friend. it never ends does it.
Awesome video Paul. As you said in your video you need to know how to
properly test these vehicles instead of just checking fuses and shipping
it. Thank you for taking the time to educate, I’m sure this eats up allot
of your personal time.
EXCELLENT VIDEO!!!!!!!!!
Many thanks, Mr. Danner. Your videos have helped and continue to help me
with my job more than you could know. I owe you the respect I have gained
in my shop. Thank you!
owe a huge THANK YOU, scannerdanner. had an accord in today that wasnt
charging. check eng. light was on, customer said he tried a new alt-still
didnt charge so he brought it in. i verified it wasnt charging, checked for
+ at the batt post and had power but i saw i didnt have power on the wire
from the indicator light. found a blown fuse, replaced it-alt started
charging. gotta diagram on that fuse-found it fed the heated o2, checked
and found rubbed wire on the o2 from a misinstalled o2 sensor!
Nice
Wow that’s some thing i would have never guessed . Great video as always
That is a great lesson, would never figured that out unless you explained
it. Thank you
WOW!!! I’ve been in this business 10 years now and I’ve never seen or heard
of a alternator not charging due to a bulb circuit malfunction. Definitely
gonna put that on my list of stuff to check from now on when I get an
alternator not charging.
Mitsubishi does it as well.
thanks man! what a great compliment
Thank for the video Paul. This video is good lection why is important to
use a diagram, many mechanic don’t like to use it.
“Give” the man a fish or “teach” the man to fish. “Show me” what’s wrong
with the car or “teach me how to find” what’s wrong with the car. This is
what seperates you, Paul, from the pack – and you do this freely. I got my
L1 last month and am indebted to you for your videos and your book. Aside
from knowledge, confidence is what’s learned from a teacher – (correction)
– a “good” teacher. Thank you.