Hello all.

I am having some issues with my ignition. I think it is the number 4 cylinder (middle coil on driver side) does not ignite. I checked the plugs, coils and everything is fine. I did however check the wiring plug to the coil with a voltmeter and it first showed 14v, then dropped to 12v, now it's just dead.

Any ideas?

I also checked the computer and shows no fault codes or anything. Interesting considering it's running on 5 cylinders. Any help is much appreciated!

there are 3 wires on each cop, one is positive, one is groud and one is a 5v square wave, thats the trigger signal and can be difficult to detect without secialized tools, there is a fair chance you have a dead channel on your ptu

Replaced the PTU and getting signal....just no power to the coil