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TCU pinout, 95 vs 97

johnceggleston
in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX

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i have been studying up on the pin outs for the TCU and i found an apparent error in the FSM.

 

(i have pdf copies of the FSM for each year which i can't / don't know how to up load. )

 

the 95 and the 97 are the same for the most part, both show pin 11 on connector B56 as VSS2 . but the 97 has has a few more pins identified at the bottom of the second page. these pin are for the ''data link signal'' (subaru select monitor) and ''AT diagnosis signal''. so they obviously added something, great.

 

but here is the problem, the AT diagnosis signal is assigned to pin 11 on connector B56, just like the VSS2.

 

anyone have any idea what is correct?? i have not checked other years yet.

 

thanks,

john

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