Some people scratch and remove the labels of the ICs used in electronic circuitry.
One such case came up inside a car's fuel switching mechanism. There is some 12 pin IC. The circuit is burnt due to water i guess.
We are not sure whether the IC is working or not.
We also can't replace the IC Since we do not know which IC is this.
You'll probably have to buy a whole new unit. The manufacturer is not going to tell you what that IC is (that's why they scraped off the identification! It might even be a custom part).
When i asked someone about this issue, he said that there is some highly sophisticated device which can trace the logic levels of the IC. I am not sure of the right name that he mentioned but i think it was perhaps "D tron tech". But he said that it's not available everywhere.
Whatever that gadget is; Is it possible to find out the logic being used inside an IC by checking logic levels somehow. And what's a logic level? Is it just like voltage level?