2007 Nissan Xtrail ignition waveform

Hello,
I am trying to understand the ignition waveform on my 2007 Nissan Xtrail T30. The engine is running fine with no problems or misfires, I have just not seen this voltage waveform before and I am trying to interpret/understand what it means.

Hello,
I am trying to understand the ignition waveform on my 2007 Nissan Xtrail T30. The engine is running fine with no problems or misfires, I have just not seen this voltage waveform before and I am trying to interpret/understand what it means. I am using a Hantek scope.


imgur.com/a/h8tsPmS

Please explain what exactly you're measuring and how/where you're connected to.

While you say voltage waveform the pictures remind a current trace with no CEMF in the beginning.(which NOT always translates to a bad coil). Then again there is some "ringing' at the beginning where the ramp actually starts.

The channel adjustment seems to be at 1V/div. Supposing 100mV =1A, this would correspond to more than 30A of peak current.Crazy high for a coil only.

I am using a Hanktek scope with a 20:1 attenuator, and the black lead is connected to ground and the red lead is connected to one of the wires on the ignition coil (unsure which wire I am connected to).

I don't have wiring diagrams and I'm mostly self taught.

Ok, you're probably dealing with a three wire coil on plug and the captured signal may show the trigger signal from the ECU to the ignition module.

This module is integrated within the coil and the trigger signal is used to control current flow through the primary windings. Due to he design of this ignition system you can't get a primary voltage capture.