I have a 99 ram 4x4 318 and the ecu is showing acode of p1757 and p0748. I:ad the wireing harnis changed in trany a mounth ago and now it says my PCS is not working (the p0748 code) what can I do and were is the PCS. I know its in the trany but were. Code P1757 is maunufacturer control.

 

P0748 Governor Press Sol Ctrl/Trans Relay Circs
P1757 Gov Press above 3 PSI in gear with 0 MPH

Check the wiring first..... there is an 01 service manual in the faq section you can download. If the wiring is ok, replace the governor pressure sensor and solenoid. They are IN the transmission, easily found by dropping the pan. Change fluid and filter while you are in there, and maybe even adjust the bands.

 

Witch wires do I look at in the trany or outside the trany

 

Grab the 01 service manual, it will show locations and such in there. Pinouts may not be exactly accurate though... Keep that in mind. (manual is in the faq section, you can just download it.)