If your ignition wiring diagram shows a L5 crank sensor then it is on the flywheel/bellhousing.

tHe point of watching on a scope is to see which signal stops first or together. The primary ignition is controlled by the EZL module as a reflection of the engine speed signal recieved from L5. So if the L5 signal dies the primary dies with it. But if primary dies there is no reason for the L5 signal to die till the motor is totally stopped.

There are many secondary ignition failures that can cause the fault you describe. Many could be seen without symptoms with an ignition scope. Low available voltage, high resistance paths to ground, etc. can be seen with proper technique.

__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician