P0622 Generator Field "F" Control Circuit Malfunction

[jwarren42]

I have a 2006 4.0l Mustang, I have gotten a code that says I have a P0622 Generator Field "F" Control Circuit Malfunction.... I have replaced the alternator 5 times now, my battery twice, my PCM, as well as the positive battery cables. I also checked and thoroughly cleaned every ground on the car. The alterator I just replaced produces about 14.84 volts.

 

[Dino Dino Bambino]

P0622 Generator Field F Control Circuit Malfunction

How to easily diagnose, repair, and info on causes of a P0622 trouble code that indicates a detected failure of the generator lamp F control circuit.

www.obd-codes.com

 

[jwarren42]

Read many other forums, including that one. Still, have not found a solution, there may be a short in the alternator wiring harness. Cant find a diagram showing the voltages of the plug.