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where is the ecu ground wire terminated?

 
Old Mar 15, 2008, 02:25 PM
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where is the ecu ground wire terminated?

i was wondering where the oem ecu ground wire, pin#13, terminated on the car?

i want to have my wideband gauge ground wire terminated @ the same location.

TIA
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Old Mar 17, 2008, 07:12 AM
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I believe it is terminated behind the passenger side kick panel and up a bit, about half way up the glove box height if I remember properly.
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Old Mar 22, 2008, 06:24 PM
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^ i crawled under the dash & saw 2 black wires with gold dots going to through the firewall & being terminated in front of the battery on the drivers side.....along with a bunch of other ground wires.

i am refering to ecu pin #'s 13 & 26. per aem, they are ecu ground wires.

i want to ground my aem uego to the same point as the ecu, in attempts to alleviate a discrepancy between what the uego say's & what is observed within logged data.
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Old Mar 22, 2008, 06:50 PM
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That is what the 02 gain is for. Again look on the passenger side there is a ground point where a few wires terminate, I believe that is the ecu ground.
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Old Mar 23, 2008, 10:46 PM
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Originally Posted by joeracer321 View Post
That is what the 02 gain is for.
i know, but sometime the 2 are bang on & oher times the gauge & ecu are ~0.2-0.4 different not something i care for while tuning on 91 octane.

Originally Posted by joeracer321 View Post
Again look on the passenger side there is a ground point where a few wires terminate, I believe that is the ecu ground.
i will. but according to aem, the 2 ecu ground wires are pin 13 & 26. i followed those wires to the grounding area near the battery. i will look again for the wires your describing...
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Old Mar 30, 2008, 06:44 PM
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Originally Posted by joeracer321 View Post
That is what the 02 gain is for. Again look on the passenger side there is a ground point where a few wires terminate, I believe that is the ecu ground.
according to the aem wiring .pdf, the ecu ground wires are #13 & #26 = black with a gold dot.

i did find wires in the kick-panel area, however they are black with silver dots.....i didnt find any black wires with silver dots coming out of the ecu?
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Old Sep 7, 2017, 01:56 AM
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So just tap ground pins 13 & 26 from ECU to wb for ground?
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Old Sep 29, 2018, 02:22 PM
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To answer this for people in the future, The ECU grounds (pin 13 and 26) terminate at grounding location #4, which is the grounding location behind the battery on the side of the strut tower.

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