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Old 07-07-2011, 12:02 AM   #1
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Default MS2 Sync loss error 38,39 problems ?

I have am having issues with Sync loss errors code 38, and 39. I cant find any solid ways to fix it.

my set up is;
94 chassis
99 motor with, tps, water temp sensor, vics,injectors.
94 coils
94 cas

Is the issue just a part of running a CAS ?

I have the 99 crank sensor i could put on but kinda dont want to.

I attached a log, the sync loss is at the end of it.
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File Type: msl aghhghhg.msl (429.9 KB, 51 views)
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Old 07-07-2011, 04:00 AM   #2
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MS2V3 or DIYPNP?
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Old 07-07-2011, 08:41 AM   #3
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Ms2v3
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Old 07-07-2011, 09:54 AM   #4
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You need to add the optoisolation circuit that is present in the MS2 for the crank sensor, to the cam sensor as well.
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Old 07-07-2011, 10:14 AM   #5
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Do you have a link to a correct diagram and what pins ?

I googled it but found a few diffrent topics on it.
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Old 07-07-2011, 10:36 AM   #6
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The cam input it what is labled SPR1.
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Old 07-07-2011, 10:48 AM   #7
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Ok that's the one I was looking at.

Just gotta make sure if have the parts then.
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Old 07-07-2011, 10:49 AM   #8
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Remember to remove the parts from your current cam circuit (ie the 5V pullups and the cap if you have one).
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Old 07-07-2011, 11:38 AM   #9
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I will have to look at my manual when I get home to a computer to see what to check and make sure I remove.

Thanks for all the help it will be nice to get rid of thu sync loss.
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Old 07-07-2011, 12:36 PM   #10
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I built this following the mega manual and the wikki page, from what I can tell there is nothing about installing a cap or 5v pull up right ?

If I would have installed it where would I ? I want to be sure I know where to look and that I'm not just missing something.
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Old 07-07-2011, 12:40 PM   #11
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I think he was assuming you had built MSI inputs, not MSII.
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Old 07-09-2011, 02:29 PM   #12
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Well since the local radioshack sucks i have no spare 4n25.

yay just ordered a 55 cent part and pay $3 dollars in shipping.

Last edited by 92Miata; 07-09-2011 at 02:43 PM.
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