My car cranks(engine turns), but wont start. Fuel pump, ignition coils, camshaft position sensor, battery etc. Are fine. After trying many things, found out that no voltage(on power circuit) on electrical connector of ignition coil. Also no voltage on power circuit of crankshaft position sensor electrical connector. One online article suggested that Repairing the cause of this missing voltage will solve the problem. I don't know where to start to repair no voltage problem.
If you could please advise as what should be my next step.