Ground Wires on AC1 Plug - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

gtpvette · 04-26-2018, 12:54 PM

Any of you gentlemen know if the ECM needs the grounds on pins 34,35,36,37 and 40 supplied via the AC1 plug to operate correctly??

Or I might ask,,, for those who have swaps running,, did you ground these??

DustinS · 04-26-2018, 01:16 PM

If I remember correctly the AC1 plug is the engine harness plug in the engine bay? If so... I have completely removed mine. Now to preface that, I did have it unplugged in the car for the past year with the car running with no issues. Just removed it now to clean up some wiring in the car.

gtpvette · 04-26-2018, 01:36 PM

Quote:

Originally Posted by DustinS

If I remember correctly the AC1 plug is the engine harness plug in the engine bay? If so... I have completely removed mine. Now to preface that, I did have it unplugged in the car for the past year with the car running with no issues. Just removed it now to clean up some wiring in the car.

Thanks! I kind of figured they weren't just wanted to be sure.

04-26-2018, 12:54 PM	#1
gtpvette Senior Member Join Date: Mar 2015 Drives: 2015 FRS - FFR GTM Location: Key Largo, FL Posts: 785 Thanks: 240 Thanked 817 Times in 378 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Ground Wires on AC1 Plug Any of you gentlemen know if the ECM needs the grounds on pins 34,35,36,37 and 40 supplied via the AC1 plug to operate correctly?? Or I might ask,,, for those who have swaps running,, did you ground these?? __________________ 2015 FR-S - One Day I'll Finish The Swap

04-26-2018, 01:16 PM	#2
DustinS Senior Member Join Date: Apr 2014 Drives: 2013 Ultramarine FR-S Location: Springfield, MO Posts: 1,948 Thanks: 2,539 Thanked 1,414 Times in 804 Posts Mentioned: 31 Post(s) Tagged: 3 Thread(s)	If I remember correctly the AC1 plug is the engine harness plug in the engine bay? If so... I have completely removed mine. Now to preface that, I did have it unplugged in the car for the past year with the car running with no issues. Just removed it now to clean up some wiring in the car. __________________

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