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Old 10-04-2014, 06:27 PM   #21
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Should be plugged into your car but with the MS3 unplugged. Like the picture below the step.
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Old 10-04-2014, 06:31 PM   #22
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I could but I don't have any way to power it off the car.

I bought it 2nd hand from https://www.miataturbo.net/miata-par...9/#post1169300
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Old 10-04-2014, 06:33 PM   #23
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Quote:
Originally Posted by whinin View Post
I could but I don't have any way to power it off the car.

I bought it 2nd hand from https://www.miataturbo.net/miata-par...9/#post1169300
That test will tell you if the MS3 card is getting power or if there is a short somewhere. After that there are some tests to test the serial output.
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Old 10-04-2014, 06:35 PM   #24
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Do I have to pull the board off or just leave it unhooked?
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Old 10-04-2014, 06:36 PM   #25
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You have to disconnect the MS3 (white board) from the main board. Its a 40 pin connector. You pull it off and then test the pins listed in the guide.

Like this:
http://www.msextra.com/doc/general/pix/dip40voltages.png
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Old 10-04-2014, 06:39 PM   #26
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10-4.

Give me a few, eating dinner atm. Will report back in about 20m.

Thanks for the help so far man.
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Old 10-04-2014, 06:40 PM   #27
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No worries I had the same stuff with mine I built. Looks like braineack built it, hopefully he will pop in and help out.
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Old 10-04-2014, 07:17 PM   #28
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12 volt power coming from the factory harness has 12.34v but at the MS3x there is nothing.
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Old 10-04-2014, 07:20 PM   #29
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Was I supposed to test those 0v and 5v ones right next to each other? It said 32 and 20 which is what I did. Also on the proto area and the u5 pin and nothing either.
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Old 10-04-2014, 07:21 PM   #30
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Test the voltage between the right leg of u5 and the center leg of u5.
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Old 10-04-2014, 07:33 PM   #31
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0.00

But between the left and center there is .50 and it tapers off to 0.00 so long as I keep the leads touched there. If I take the leads off it halts at whatever voltage until I touch the leads back to the legs.

Come to think of it maybe I have the settings a click to far on the multimeter and it is 5 volts between the left and center leg.
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Old 10-04-2014, 07:48 PM   #32
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Might be a problem.



Am I supposed to have those q12 etc etc chips?
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Old 10-04-2014, 07:51 PM   #33
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There should be 12 volts between right and center, 5 between left and center. Fiddle with the settings and see if you can get that. Let me know what you find.
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Old 10-04-2014, 07:52 PM   #34
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Nope u5 is the only one needed.
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Old 10-04-2014, 07:56 PM   #35
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There is not. I get no volts on right/middle and .5 on middle/left.
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Old 10-04-2014, 07:57 PM   #36
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Meter is set on 20 which is the lowest it will go before going infinite.
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Old 10-04-2014, 08:04 PM   #37
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Quote:
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Meter is set on 20 which is the lowest it will go before going infinite.
What do you measure at pin 28 on the main board connector.
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Old 10-04-2014, 08:23 PM   #38
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Hmm? Nothing said to check it. What do I check it against?
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Old 10-04-2014, 08:25 PM   #39
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Against ground. Either pin 2 or the proto area ground. Is your key on?
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Old 10-04-2014, 08:25 PM   #40
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Yup, brb.
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