I have a 2007 F150 the ac compressor will not engage so I jumped the wires at what I thought was the pressure switch but it was the ac pressure transducer sensor now the pickup won't start or turn over I check all fuses the starter relay has power to it but no ground if I jump around the relay with ground I can git it to turn over but no start I plug in my scan tool and its unable to establish a link and the dash read out says check gauges

 

welcome to the site

 

Thanks Tony


I found my problem I don't know if when I jumped across the wires I shorted the PCM relay #203 and it stuck open, but I pulled it out to test it tested good plug it back in run fine

 

Glad you fixed it, welcome aboard!