Substitutions

[Brent]

Thanks for the clarifications Ludis, I appreciate it.  :)

Regards,
Brent

-----Original Message-----

>Brent wrote:
>>
>> The pin changes are second hand info.  I looked at the pinouts and found
>> that C15 & D15 show as not used on the 7747.  I don't know where those
pins
>> lead in the 7747 if anywhere....
>> In the 8746 I see D16 & D15 wired together as are D14 & C15.   Why they
are
>> linked that way I don't know.  I figured I should cut them to be safe.
>
>The 8746 and 7747 use the same PCB.  Internal to the ECM, D14 and C15
>are wired together.  Same with D15 and D16.  Pairing the pins increases
>the current capacity.
>
>> On the 8746 the A11 is cts,tps,mat gnd while the D2 is the map gnd.
>> In the 7747 D2 is cts and tps gnd, and A11 is the map gnd.  Does this
make a
>> difference?  I don't know.  I figured if Gm could have used one ground
pin
>> they would have.
>
>It won't make a bit of difference.  All the ECM's ground "outputs" are
>equivalent.  Which one to use was probably determined by how the harness
>was assembled and routed.
>
>--
>Ludis Langens                               ludis (at) cruzers (dot) com
>Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/


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