Damaged ECM?

[34nineteen]

I have done more research, and contacted the guys at IDS. As it turns out, apparently the fuel pump on the 2010 models is PWM controlled, and has a flyback diode which acts to reduce the inductive kick that occurs during the PWM process, reducing voltage and heat dissipation in the ECM output. Of course, swapping polarity would destroy the flyback diode.

The solution (I have yet to try it) is to install a new flyback diode between the pump (+) and (-). I will try it tonight and let everyone know, in case this happens to someone else in the future.

Have you considered using a FULL BRIDGE RECTIFIER???