Is there a way to bench flash the lt1 94 ecu just wiring the aldl cable to ecu pins? What ecu pins need to be used? Anyone can help me? I want to try flash my ecu but the aldl port don't have connection
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Is there a way to bench flash the lt1 94 ecu just wiring the aldl cable to ecu pins? What ecu pins need to be used? Anyone can help me? I want to try flash my ecu but the aldl port don't have connection
yep it's fairly easy, i had an ecm hooked up on the bench when i wrote eehack
you just supply power and ground to a bunch o stuff. use a good clean power supply (i used an old PC power supply) or a well charged car battery.
on the RED connector, A2 and A18 need to be grounded
on the BLACK connector, B15, B30, and B31 need to be +12v
on the GREY connector, C32 needs to be grounded
on the BLUE connector, D1 needs to be grounded, D3 needs to be +12v
it sounds like a lot, but it's just 4 grounds and 4 power.
then for your ALDL data link, you connect RX and TX to D30 on the blue connector, and ground to that bundle o' grounds above.
Thank you very much for your answer, my only doubt is regarding the connections that you mention rx and tx, I want to connect it to the obd1 terminal of 12pin of my cable without altering it, I understand that the only 4 pins that are used in the lt1 94 are pin A what is earth, pin B which is to diagnose, pin G which is to test the fuel pump and pinQuote:
Originally Posted by steveo
M which is for serial data, correct me if I am wrong please, but I need to put pin A to ground and pin M to pinD30 of the blue connector?
you got itQuote:
M which is for serial data, correct me if I am wrong please, but I need to put pin A to ground and pin M to pinD30 of the blue connector?
Ok friend, thanks you so muchQuote:
Originally Posted by steveo