2016 Jeep Compass CAN C Noise

Hi all,

I have a 2016 jeep compass with a 2.0l, I've been getting noise on can c. first thing we looked at was the alternator. and found the following waveform:
 
https://k5cew.arpnet.us/alt.pdf
almost thought it was a bad diode, upon further inspection, the waveform looked like a coil was charging and the time between each event aligned with a ignition coil or injector firing.
The ignition coils resistance was checked and all were dead on at .59 Ohm on the primary and 2.43M on the secondary. 
The number 1 ignition coil was used as a trigger and can c low was observed.
 
https://k5cew.arpnet.us/ig256.pdf
Here the disturbance of can c low is observed with the coil firing on every cylinder.

when we look closer at the capture, it clearly shows there is flyback reaching the can c network, in fact it reaches the entire electrical system.
 
https://k5cew.arpnet.us/ig.pdf
a voltage drop test on all PCM power and grounds reveled between .010 and .015V. 

The coils and injectors appear to be fine and the ignition condenser was tested as functional but for $10 it was replaced.
Is there a snubbing circuit in the PCM that is supposed to clamp the inductive kick from the coils that could possibly failed?

We are waiting for the new PCM to come back from cloning but wondering if anyone has seen this issue before?

not sure why the waveforms are not showing up.

Are you chasing a problem? Or, is it just that you don't like the noise that you are seeing in the CAN signal?

CAN Bus uses 2 wires...CAN High and CAN Low. In a passive state, the voltage on both wires is 2.5v (zero potential) When there is activity, CAN High toggles up to 3.5v and CAN Low toggles down to 1.5v. (2v potential)
The computer looks at the difference (potential) between CAN High and CAN Low. The result is  a 0v to 2v square wave.This allows the computer to ignore any outside noise.

If you want to see what the computer sees, do not use battery negative as your ground. Put the negative lead of your scope on CAN Low and put Channel A of your scope on CAN High. 

Now, instead of a noisy 2.5v to 3.5v toggle on CAN High and 2.5v to 1.5v toggle on CAN Low, you will see a clean 0v to 2v toggle.

If you do this and the signal is clean, the computer is seeing a clean signal.
 

Hi chad, thanks for the response. We are actually looking to resolve the initial U0001, U0002 codes. a three key cycle KOEO scan after clearing the codes never sets the U0001/2 codes until the engine is started.
Eventually, the pcm starts complaining and throwing codes for loss of communication with the abs, sas and tipm. 

Using CAN low on the scope ground seems to make no difference on the signal. The same noise appears when the engine is started.