Right so new development.
Ahc ecu has been disconnected and now it's stopped flashing off but the blink test has brought up the following codes does anyone have any idea
18, 31, 32,33,34,43
also what would stop the ahc pump running on active test but will energise manually but draws a lot of juice
also
4.4 v is going in across terminals on pressure switch and the same voltage is coming out. I thought it's supposed to be less