Hi Jerry.

Viewing primary voltage on these systems is impossible.  Use your low current clamp and look at primary current.  Then you will see the dwell 

Jerry,

The IC command may not be the same as dwell.  For direct power transistor ignition, it is.  The IC time high (not rise time) is the dwell because the computer controls the dwell.  In other systems, an ignition module controls the dwell and the IC command just serves to control spark timing.

I don't have any captures of this model to say for sure which it is but the diagram below shows an ignition module in the coil.  To answer this question one would need to capture the IC and primary current together.  In any case, the primary current will always be the dwell, whereas the IC signal may not.