04 lb7
I have p0540 open iah. I test the relay and the iah both was fine. So I did put a new relay in just to make sure it was not weak. Still having the problem so next I hooked jumpers to the pig tail going into the relay box it turns on works fine. So I'm not getting a signal to turn it on. Well its not getting there.
Looking at a wire diagram it looks like the signal turns on both the fuel heater and iah??
Also I see the fuel heater has a fuse it's blown (fuse #3) I put in a new one hit the key same thing. So I unhooked the fuel heater and blow another one.
So does anyone know are both problems related? Anyone have any ideas what to look at?? I'm guessing it's a wire shorting out some place? ?
Thanks for any input
I have p0540 open iah. I test the relay and the iah both was fine. So I did put a new relay in just to make sure it was not weak. Still having the problem so next I hooked jumpers to the pig tail going into the relay box it turns on works fine. So I'm not getting a signal to turn it on. Well its not getting there.
Looking at a wire diagram it looks like the signal turns on both the fuel heater and iah??
Also I see the fuel heater has a fuse it's blown (fuse #3) I put in a new one hit the key same thing. So I unhooked the fuel heater and blow another one.
So does anyone know are both problems related? Anyone have any ideas what to look at?? I'm guessing it's a wire shorting out some place? ?
Thanks for any input