First thing to do [you may have gotten this far] is to change both plugs and the connector under the coil...plus check the wire to 5 for continuity.
The spark from the coil completes a loop for two cylinders in series. Goes from the coil- connector- plug- block- plug- plug wire- coil.
Any break here in this chain and you get no spark.[ most common is plug connector under coils]. Common practise to change them w/plug change, regardless....
If you want to check for B+ , it will be at the coil primary input. It is constant 12V . , as the coils are a switched ground at the ECU [ switching transistors]