2009 I load 4cyl petrol with code PO108. This code comes on first followed shortly after with PO113 Air temp code.It is not the map sensor as a new one has been substituted. It has a 4 wire connector and when the vehicle is running it has 5v on all wires.As I understand it, it should have 5v to 2 of the wires when the connector is disconnected from the map sensor. One of the other wires should change voltage as the engine revs (changing pressure inside inlet system). The other is the wire sending air temp to ECU. I am wondering is it a fried computer. Any expert advise would be great.