Just curious if anyone has some info on wiring MSII of ignition on a 2.4LD9 - Tuning Forum

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Just curious if anyone has some info on wiring MSII of ignition on a 2.4LD9
Saturday, November 15, 2008 9:01 AM
I have done a lot of searching and haven't found much on this topic here, so going out to the garage for a break. I understand how the MSII controls the ignition but I am a little confused on the ICM wiring. The MSII can uses the stock crank trigger wheel 6+1, but pin 36 on the MSII board is where my question is.

It displays on the schematic, ignition Module/ Coil, so I know its an output. However, not exactly sure on which wire I attach it to on my stock ICM. Does anyone have a break down on the ins and outs of the 2.4LD9 ICM.

Thanks in advance

Re: Just curious if anyone has some info on wiring MSII of ignition on a 2.4LD9
Saturday, November 15, 2008 3:52 PM
Jamie S wrote:I have done a lot of searching and haven't found much on this topic here, so going out to the garage for a break. I understand how the MSII controls the ignition but I am a little confused on the ICM wiring. The MSII can uses the stock crank trigger wheel 6+1, but pin 36 on the MSII board is where my question is.

It displays on the schematic, ignition Module/ Coil, so I know its an output. However, not exactly sure on which wire I attach it to on my stock ICM. Does anyone have a break down on the ins and outs of the 2.4LD9 ICM.

Thanks in advance

That's because you can't (not "as-is" at least). You need a first gen GM 4-cyl DIS ICM, such as the early 90's quad4's, LN2's and I believe some later Tech IV's had.

The MSEFI pages are very helpful in getting everything setup. CLICK




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Re: Just curious if anyone has some info on wiring MSII of ignition on a 2.4LD9
Sunday, November 16, 2008 8:03 AM
What wire is typically used to trigger for just fuel injection on MSII? Red Black wire the ICM refference low or, Purble white 7x refference signal, I could not get this signal to work.
Re: Just curious if anyone has some info on wiring MSII of ignition on a 2.4LD9
Sunday, November 16, 2008 8:49 AM
Pins 32-35 ground the injectors (trigger them as you call it). There should be 2 leads with 2 wires coiled around each other. It's been a while since I have done it, so my memory is a little flaky. If you are asking how to get a tach signal, if you use the older ICM, there is a tach output signal you can use, otherwise, I believe the new MSII codes can decode the VR sensor signal.




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Re: Just curious if anyone has some info on wiring MSII of ignition on a 2.4LD9
Sunday, November 16, 2008 9:07 AM
Yeah tach signal. Thanks for the help, The MSII does decode VR. I have been on the forums, MSEFI pages and reading for probably 12 hours i nthe last 2 days. I am just having trouble with the set up with the jumpers I guess. I think I may have cooked something in the main board. Its been a rough weekend.
Re: Just curious if anyone has some info on wiring MSII of ignition on a 2.4LD9
Sunday, November 16, 2008 7:55 PM
Jamie S wrote:Yeah tach signal. Thanks for the help, The MSII does decode VR. I have been on the forums, MSEFI pages and reading for probably 12 hours i nthe last 2 days. I am just having trouble with the set up with the jumpers I guess. I think I may have cooked something in the main board. Its been a rough weekend.

Sorry to hear that. I hope everything works out for you.




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