Does anyone know how much voltage should come from the ecm to the fuel lift pump relay? Been getting 0230 code cause my lift pump is losing power. traced it back to the two wire connector, its hit and miss getting power. when lift pump has no power that wire is putting out maybe .03 volts. gonna take the ecm off tomorrow and test wires, look for corrosion etc

 

my truck did the same thing saying low voltage to lift pump it was a ground wire on pass side going to battery was cracked on battery post

 

i've checked all my grounds. they are all .2 or .3 i'm thinking maybe my ecm is bad but its not throwing any codes other then sometimes it loses power to lift pump relay, so i get a p0230. i checked the ground wire and yellow w/ white striped wire, it had 27.25 ohms through the ecm......not sure if thats bad or not.