Automotive electronics and part numbers

[Chuck(G)]

Replaced the RABS module in my 92 F150 after I got tired of looking at the idiot lights. NOS OEM cost about $50; easy install (just in back of the glove box; a 10 minute job). Opening the module up, I see the usual capacitors and resitsors, but every single active device (right down to the TO92 transistors) has a house number on it. For example, there's a 16 pin DIP with an NS logo and the number 70001SC. Or several TO-220 (transistors?) labeled 5102FB01. How about a 28 pin DIP with the breathtaking number N7600010FJC004 (another NSC part). How is anyone supposed to make any sense of this? The ECU, by contrast had standard part numbers on the ICs.

 

[Unknown_K]

Guess you need a FORD internal service manual to decode the parts if they even exist. Those boards were never meant to be user serviced anyway.

I would think that FORD was big enough back in the 90's to get parts made with their internal part numbers. Do new cards still have that?

 

[Chuck(G)]

Oh, I'm sure that they didn't want users repairing their own vehicles. Board is nicely conformally-coated. I suppose I could suss out the function of some of the components by looking at traces, but that would probably be a waste of time. About the only thing that I could replace with any degree of certainty is a 10µF 100V electrolytic.

 

[NeXT]

Ford sure didn't change much. MY Ford-made ECM is the exact same in construction and numbering, but it's from 1982.
I don't think those parts lists have ever been decoded. The folks who dig into vehicle modules typically only care about if something is or isn't an EPROM/EEPROM.