MS3X CPU fault...?

[ae86drftr]

Hi everyone. I am attempting to finish the last tidbits on my MS3X build controlling a 4AG 20 valve engine. The MS3X is running the MS3 format 0524.05 firmware. Initially I had the COPs wired to the X card outputs and unfortunately I had my wiring incorrect. I corrected my wiring and now I am not able to get any spark output in the test mode of Tunerstudio. I do have an additional MS3X that I pulled the CPU out of and installed into the above mentioned MS3X for the 4AG and with it installed I am able to get spark. Is there any way to repair this processor? Who can I get ahold of for this type of repair? Any input will be greatly appreciated!

[jsmcortina]

That's not a firmware version... see the title bar of TunerStudio.

From what you've said I can't tell if that's an MS3 card issue or MS3X card. Mostly likely the MS3X. Can you swap them between the ECUs and see where the fault goes?

James

[ae86drftr]

That's not a firmware version... see the title bar of TunerStudio.

From what you've said I can't tell if that's an MS3 card issue or MS3X card. Mostly likely the MS3X. Can you swap them between the ECUs and see where the fault goes?

James

Sorry. I knew when I was typing it that it wasnt correct.... I have 1.4.1 installed on it. I will refer to it as Megasquirt A and the "extra" Megasquirt that I own (which is for a turbo 4G63) I will refer to as Megasquirt B. I have not attempted to install the MS3 cpu from MS3X A into the MS3X B. I have only done the opposite. I took the cpu from Megasquirt B and installed it into Megaquirt A and that is how everything functioned correctly. One thing I did notice and found quite odd was that when I had the MS3X A with its "faulty" cpu card in place I would attempt to test the spark output and the battery voltage gauge would oscillate from 11.5 or so to 13 or so. I am not sure if this helps any however it is better than not knowing about it.

[jsmcortina]

How about swapping the MS3X. That's more likely to be the issue as it has the output drivers on it.

James

[ae86drftr]

Hmmm. I never thought about that. If I do that would I need to re-upload the firmware as I did with the cpu?

[ae86drftr]

So, after swapping in the expansion card from MS3X B to MS3X A I have the same results. However what I found interesting was that swapping in the CPU card from MS3X B to MS3X A did not change the results. I decided to try it with both the expansion and Cpu originally purchased for my MS3X A and the results were the exact same as with the known good CPU and expansion board from the MS3X B. I feel the harness may be hiding something that I didnt account for to find the problem. I will keep yall posted.