[V8]... grounding/codes

[John Dodd]

Thanks ,I am looking for some good pinters as I never had to
troubleshoot this car's electricals.
I started with the IAT(intake air temp) but it checks OK.
So where exactly is this J220 or the other connectors you mentioned ?I
thought it plugs into the ECU.
I cleaned the ISV and I'll try tonight.
I still have that 1111 code which can be nasty.
There is virtually no corrosion on the car since the climate here is
cold and  very dry.Also no salt on the roads either.