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1G New/Used ISC Motor Ohms High???

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PredatorSniper

10+ Year Contributor
125
19
Sep 16, 2012
Wichita, Kansas
My old ISC went bad so I bought a used one for my 92 GSX online. The ad said it was ohming out correctly. I got it in the mail today and its ohming between 41-42 does this mean its bad or the wrong one?
 
Per F.S.M the testing of Ohms on the I.S.C @ Pins #1 and @ #2 Should read between 5 to 35 Ohms. Connect no more than 6 volts to Pins #1 and #2 at the I.S.C and it should operate (move in and out). I have seen some I.S.C Ohms correctly and they did not work. Make sure after replacement to cycle the key to the "On" position and then key "Off". This helps the I.S.C determine it's base settings back to 0; or at least close to it =)
 
It's perfectly normal. Taken from www.dsmisc.com:

9. The new ISC you shipped me reads 40 Ohms across the coils, not 28-33 ohms. This isn't what the VFAQ, or the OEM manual or other test procedures say.
Yes, because most of the on-line info on DSM ISCs is old and has never been updated! Mitsubishi started putting these new ISC's in cars around 2000. Dealers started selling them as OEM replacements for DSMs after they cleared out their stock of the older units. These older units (cast metal/brown plastic) are impossible to find anymore, and in any event, aren't as good as the new version. The new OEM replacement ISC for the 4G63 motor uses a higher ohm load. This is an improvement over the old ISCs, which were suppose to be within spec if they were between 28-33 ohms. Those cause the ECU to push more current. The new-style ISC's are much more precise and will read about 40 +- 0.25 Ohm across each coil. The higher ohm rating is actually a good thing, and results in pushing your ECU drivers less than even a brand new, old ISC. In other words, it uses less power to do the same thing.
 
Could be one of both, have you check the ICS to see if that's the right one?.

Can you post a pic of the part, also those numbers are way to much for the ECU, If you install it like that, you will end up with fried ECU.

If the it plugs and bolts on perfectly, then it more like it is the right part.

It has to measure from 28 to 32 oms.
 
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