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View Full Version : GM E80, E82, E83, E84 ECM bench harness diagrams



araes
October 1st, 2017, 12:33 PM
Hi. I need diagrams for E80, E82, E83, E84 ECM bench harness. If someone has some schematics I will thank you very much.

GMPX
October 1st, 2017, 01:30 PM
Big ask for a first time poster :angel_innocent:

araes
October 1st, 2017, 03:09 PM
Big ask for a first time poster :angel_innocent:

Yes, you are right. And this is why I found what EFI Live does and know about this forum. If you have no problem with a newcomer and have some info to share with me I will thank you so much. :cheers:

araes
October 1st, 2017, 03:29 PM
I am trying to make bench harness for most newer GM ECMs. This is the information that I found here and in some other forums. I like to share it here with you so you can see that I am not just asking for help but contribute with something (altrough I just made a copy and pase):

E37:
Black Connector:
Pin Signal
8 Ground
19 Ignition
20 Battery
43 CAN +
44 CAN -

E78:
Blue connector:
J1-19=battery pos
J1-20=battery pos
J1-43=can low
J1-29=can high
J2-13=switched 12v+
J2-28=switched 12v+
J2-73= gnd

E39:
Blue connector:
J1-20= gnd
J1-30=gnd
J1-39=can high
J1-40=can low
J1-51=switched 12+
J1-52=battery pos
J1-71=switched 12+
J1-73=switched 12+

be sure to use a power supply rated for at least 3 amps as the e39 pulls a lot of current
E78 is the same as the mt-88, Entrol 88
we also put an led on the fuel pump relay pin to see if the cal is valid

E92 in attached image:

21552

albert12892
December 11th, 2020, 04:20 AM
I am trying to make bench harness for most newer GM ECMs. This is the information that I found here and in some other forums. I like to share it here with you so you can see that I am not just asking for help but contribute with something (altrough I just made a copy and pase):

E37:
Black Connector:
Pin Signal
8 Ground
19 Ignition
20 Battery
43 CAN +
44 CAN -

E78:
Blue connector:
J1-19=battery pos
J1-20=battery pos
J1-43=can low
J1-29=can high
J2-13=switched 12v+
J2-28=switched 12v+
J2-73= gnd

E39:
Blue connector:
J1-20= gnd
J1-30=gnd
J1-39=can high
J1-40=can low
J1-51=switched 12+
J1-52=battery pos
J1-71=switched 12+
J1-73=switched 12+

be sure to use a power supply rated for at least 3 amps as the e39 pulls a lot of current
E78 is the same as the mt-88, Entrol 88
we also put an led on the fuel pump relay pin to see if the cal is valid

E92 in attached image:

21552


hi i need the e92 harness bench anyone ??


thanks albert