Code 12 Possibilties

[SCV8]

I've managed to come up with a code 12 recently, along with no spark on both sides.
Both the cam sensors, and the crank sensor check out OK on the ohms test; anything else that I can check out besides the wiring itself?

 

[Toysrme]

1) Check the air gap of the sensor pick-ups *& distributor
2) Check the wiring
3) Check for the correcet STA signal

 

[SCV8]

The ignitors have a 5v signal going to them, is that what you are refering to, or is it the small signal to the cam, and crank sensor that you are refering (STA signal)to?

 

[Toysrme]

The STA is the starter signal.
I'm talking about the air gaps on the sensors themselves. If you bump any kind of inductive pick-up sensor out of alignment they wont' pickup.

 

[SCV8]

Nothing has been touched in that area, distributors are in fine condition.
What I believe I need is a pinout description of the ecu, and ignitor plugs so I can check the ECU for a pulse from the sensors, and an output to the ignitors.

Unless there's something I'm missing...

 

[SCV8]

Found an open circuit; the crank sensor wire that the piggyback uses had come separated inside the connector.
It's always the aftermarket stuff it seems.