So I noticed when I put the dmm on the fuel pump harness brown wire at the pump with it not connected to the pump I get 11.5 volts with key on.
However, when I connect the fuel pump harness to the fuel pump then check the voltage at the brown wire key on I get 1.5 volts, why?
So today I went to the ipdm and tested the pin wire 1 which is a green or red wire and I get 12v constant but when I checked pin 36 brown wire which is the wire that primes the pump with key on I got absolutely no voltage.
So at the ipdm pin 36 brown wire I hooked a positive wire from the battery which with those 12v I finally heard the pump prime and the car turned on but when I took that wire off back to no priming and non starting.
Does this mean my ipdm since the fuel pump relay on mine is internal is bad?