PCM / Computer pin diagram

[1RangerNut]

Looking for a diagram for a 1989 B2, had a pin come out with the connector and need to know if it's important.

Thanks: Steve

 

[RonD]

Have a look here: http://www.auto-diagnostics.info/ford_eec_iv
And here: http://www.fordmods.com/documents.php?d=41

Also look here: http://www.therangerstation.com/tech_library/EDiagrams/index.htm

Select the three 2.9l Engine Electronic Controls
Where you see "Solid State" in a box, that is the computer(EEC-IV), and there are pin numbers listed for each connection.

There are also 2 connections for automatic transmission, Lock up and 3/4 shift(OD)

 

[1RangerNut]

Thanks a lot, it's pin 60 looks like a ground for maybe the fuel system.


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[RonD]

PCM Grounds are important, most are not shared internally so one not working could effect just one or a few systems, not all systems, common practice in computer circuit design but not in automotive power distribution, where almost anything metal is a shared ground, lol.