Check Engine Light vs Sync Loss Not Disabling

Testing and development of Megasquirt 3

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shaodome
Master MS/Extra'er
Posts: 741
Joined: Thu Aug 26, 2004 1:58 pm

Check Engine Light vs Sync Loss Not Disabling

Post by shaodome »

So with the introduction of the 1.5 Alpha firmware I noticed that the sync loss counter continues to count up despite the engine maintaining sync. I'm guessing this might be because the cam sensor was used during cranking to sync up and then the firmware is just counting the teeth on the crank after establishing where TDC for cyl 1 was. Is that correct?

Timing remains solid and as commanded, so I'm not super concerned about this as the MSpro VR inputs have a tough time in dealing with Toyota VR sensors, especially when it comes to low tooth counts like a single tooth on the cam. Under the Check Engine light settings there is a threshold for sync loss and now with the new method of showing the lost sync (even though engine running) I cannot disable the check engine light, even if I disable the sync loss check dropdown. .
shaodome
Master MS/Extra'er
Posts: 741
Joined: Thu Aug 26, 2004 1:58 pm

Re: Check Engine Light vs Sync Loss Not Disabling

Post by shaodome »

bump?
Matt Cramer
Super MS/Extra'er
Posts: 17507
Joined: Thu Apr 16, 2009 8:08 pm

Re: Check Engine Light vs Sync Loss Not Disabling

Post by Matt Cramer »

Can you post an MSQ and data log of the bogus sync loss counting-up behavior?
Matt Cramer -1966 Dodge Dart slant six running on MS3X
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