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[FIXED] 2001 ACURA CL 3.2 CRANKS/ NO START

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4 years 8 months ago #31531 by tim.smith1
amp probe off of coil fuse
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4 years 8 months ago #31532 by tim.smith1
amp clamp off coil fuse
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4 years 8 months ago #31533 by jreardon
Can you put in a second channel and sync it off like any coil IGT wire. I want to make sure all 6 coils are in there. What scale did you set you amp probe to? And a picture of one of the ramps zoomed in please, thanks.
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4 years 8 months ago #31534 by tim.smith1
could you help me with the best setting for low amp clamp?

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4 years 8 months ago #31535 by jreardon
What settings was it at? I'm going to guess you had it at 100mV / 1 amp mode
so the 500mV in the graph means it was hitting around 5 amps.
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4 years 8 months ago - 4 years 8 months ago #31536 by jreardon
The peaks of those current ramp were getting cut off by the icm so i think the amperage is sufficient for the icm. Whether or not there's spark occurring inside the cylinder I don't know. We can assume some things from the current ramp like I doubt all 6 coils are shorted, and you changed the plugs so the gaps should be fine (no tail at the end of the ramps).
Last edit: 4 years 8 months ago by jreardon.
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4 years 8 months ago - 4 years 8 months ago #31538 by jreardon
IGT is the low voltage control signal to ICM in each COP. I highlighted them in yellow. No need for attenuator. Pick any and backprobe one for sync and retake primary current please
Last edit: 4 years 8 months ago by jreardon.
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4 years 8 months ago #31540 by tim.smith1
So scope is loosing internet took picks with phone amp clamp on 1mv/10ma should see green trace on scope for settings
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4 years 8 months ago #31542 by jreardon
Okay, first, no turn on oscillations, not sure if that's significant. Is that because not all coils have that, or because the secondary is shorted because the spark current is finding a path through the soaking wet plug, to ground? Second, what the heck is that green channel on? Where is that second channel hooked up to?
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4 years 8 months ago #31543 by tim.smith1
2nd channel is on number 4 coil Control wire Brown in color. Most likely the plugs are wet. When I check fire on coils they are firing bright blue.
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4 years 8 months ago #31544 by tim.smith1
@jreardon this should be what you are looking for I will take them again at different zooms
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4 years 8 months ago #31545 by jreardon

tim.smith1 wrote: 2nd channel is on number 4 coil Control wire Brown in color. Most likely the plugs are wet. When I check fire on coils they are firing bright blue.


Hold a plug up, with an air gap to ground, and take a current ramp on just that one coil. I want to know if the turn on oscillations are supposed to be present on these coils. I'm genuinely curious now.
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4 years 8 months ago - 4 years 8 months ago #31551 by jreardon

tim.smith1 wrote: So scope is loosing internet took picks with phone amp clamp on 1mv/10ma should see green trace on scope for settings


Did you type that correctly? 1mv /10ma ?

2nd channel is on number 4 coil Control wire Brown in color.


Can you test that brown wire again, plugged in and unplugged? That signal did not look right, although it did trigger the coil.
Last edit: 4 years 8 months ago by jreardon.
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4 years 8 months ago #31553 by tim.smith1
This pick is a volt plug off of brown control wire off of coil not using amp clamp here just back probing the wire
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4 years 8 months ago #31554 by tim.smith1
This is checking a three wire coil that has the icm built into the coil I don't think we will see what you guys are looking for right?

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4 years 8 months ago #31556 by jreardon

tim.smith1 wrote: this is a amp off battery and injector an coil off number 3 cylinder i hope it shows up. if i can improve image somehow please let me know


Someone please correct me if I'm wrong but shouldn't injection be taking place during intake stroke? Why is injection taking place within spark dwell time, which would be around compression stroke?
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4 years 8 months ago #31557 by tim.smith1
Pretty sure injection and coils fire around compression stroke I do think that an injector will fire milliseconds before the coil but not enough to truly see don't think I am wrong but if I am then explain it better.,...........where is scanner danner when you need him lol

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4 years 8 months ago #31558 by tim.smith1
So ready to give up on this car but I have never been a quitter lol

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4 years 8 months ago #31559 by jreardon
When you took that picture, it was coil and injector on the same cylinder?
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4 years 8 months ago #31560 by jreardon
I'm good with some pictures I will try to illustrate :)
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