F8CV Engine In a Mightyboy

[Hewball]

Trigger pattern Problems to start with

GM 60/2/2/2 Trigger Pattern Selected

Screen Shot 2021-02-21 at 11.32.29 pm.png

Tried both Cam and Crank on Primary still unable to Sync

2021-02-19_17_00_23_537: EngineState: engine has STOPPED
2021-02-19_17_00_23_537: EngineState: templog engine has STOPPED [2][1761DA1B] [2][15A30E20] 29281275
2021-02-19_17_00_23_537: EngineState: trigger ICU hw: 10040 10040 1
2021-02-19_17_00_23_537: EngineState: Template MINIMAL_PINS (99) trigger TT_GM_60_2_2_2 (54) useRiseEdge=Yes onlyFront=Yes useOnlyFirstChannel=No tdcOffset=0.00
2021-02-19_17_00_23_537: EngineState: trigger#1 event counters up=0/down=6346
2021-02-19_17_00_23_537: EngineState: expected cycle events 7/0/0
2021-02-19_17_00_23_537: EngineState: trigger type=54/need2ndChannel=No
2021-02-19_17_00_23_537: EngineState: expected duty #0=0.36/#1=0.00
2021-02-19_17_00_23_537: EngineState: synchronizationNeeded=Yes/isError=No/total errors=3 ord_err=0/total revolutions=7/self=No
2021-02-19_17_00_23_537: EngineState: gap from 4.50 to 7.50
2021-02-19_17_00_23_537: EngineState: primary trigger input: PC6
2021-02-19_17_00_23_537: EngineState: primary trigger simulator: NONE OM_DEFAULT freq=1200
2021-02-19_17_00_23_537: EngineState: trigger error extra LED: NONE OM_DEFAULT
2021-02-19_17_00_23_538: EngineState: primary logic input: NONE
2021-02-19_17_00_23_538: EngineState: secondary logic input: NONE
2021-02-19_17_00_23_538: EngineState: totalTriggerHandlerMaxTime=915

2021-02-19_16_51_10_155rpm_0_maf_0.0.png

just an example of what the sniffer looks like


self simulation sniffer log

2021-02-19_17_07_28_880rpm_0_maf_0.0.png

Ignore the spark.. forgot i had wasted spark on


i tested with the factory ECU, and 1st Cyl Fires on 10 Deg BTDC


also out of interest i changed the trigger to 2jz 1/12, just to confirm my inputs were working and it showed sync on the sniffer screen but i didnt get a shot of that

[AndreyB]

I see only one channel showing up signals?

Also it looks like first channel is the one with 60/2/2 many teeth while first one should be the one with just single, and second channel with many?

[Hewball]

swapping to the single tooth as primary sensor, i forgot this in the top post

2021-02-19_16_56_09_411rpm_0_maf_0.0.png

[Hewball]

also now uploaded the tune
https://rusefi.com/online/view.php?msq=430

[mck1117]

It looks like both hardware channels are fine, but that trigger pattern isn't listening to both.

[Hewball]

yes Both Cam and Crank trigger led's flash with what i would expect the trigger pattern to be


but as i said this is the 2jz 1/12 trigger log in the console just to confirm 2nd trigger

2021-02-25_15_47_29_620rpm_0_maf_0.0.png

[AndreyB]

You definitely need to flip your input settings - the cam sensor thing has to be on top while crank sensor signals have to be on the bottom.

Are we starting to suspect a defect with trigger shape definition? I am unable to properly focus on this to properly diagnose this at the moment

[mck1117]

You definitely need to flip your input settings - the cam sensor thing has to be on top while crank sensor signals have to be on the bottom.

Are we starting to suspect a defect with trigger shape definition? I am unable to properly focus on this to properly diagnose this at the moment

We've been DMing and he's tried a bunch of different combinations of flipping the inputs around. We should still see signals on both channels even if they're mapped wrong. On the 2JZ config he sees the expected pattern, but on the 60/2/2/2 GM it's inexplicably missing one of the channels.

[Hewball]

Red Herring this one
did a dfu firmware update on windows and now it works and sync's
thanks for the help, just damn annoying

2021-03-01_10_54_58_732rpm_0_maf_0.png