Receiving no voltage ( at least test light don't light up) when pinned at yellow/green wire at distributor plug... the issue I'm having is no spark...however, coil passed test as well as igniter module. The ecu is new.

 

I'm not sure about this but do the cam and crank position sensors play a role in spark?

 

year make and model please

check engine light on?

ground wires connected and not in junk condition?

 

Turn key on but don't crank, do the oil and battery lights come on? Does the check engine light cycle and the fuel pump prime?

 

Ok, upon further review... here is judgement... there seems to be some power at plug due to a slight tick of voltage when test light connects to wire. however, I backpinned a positive lead to wire and a negative lead to battery positive and got low voltage around 2.53 volts but perhaps due to low battery. Also, tested coil resistance and primary seems to be at 0.00 whereas secondary is at 0.16 within specifications. I am going to replace coil and hope for the best.

 

Is the battery good? Can it crank the engine?

Check the dash lights like I said.

You should have about battery voltage from either primary screw of the coil to ground when the key is on.

Do not crank engine with the distributor cap off, unless you hold a grounded test wire near the coil secondary terminal. Coil damage is likely firing it into an open circuit.