So I have an 01 supercab 4x4 with a 5.4 and heres my problem. My electric door locks don't work but u can hear a clicking in the ecu. My mileage display disappears from time to time. When I look at the ecu the outside cover has white corrosion on it. Do you think my ecu could be the cause to my problems?

 

You have a wiring problem usually in the harness where it goes between the door and the body