ECU Ground

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Oct 10, 2007 | 09:33 AM

crackerjakx

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Joined: Feb 2007

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ECU Ground

Where does the ECU ground terminate? The engine or the chassis? I plan on running a wideband gauge and want to use the same voltage reference (ground)as the ecuwithout tapping into the harness.

Oct 10, 2007 | 10:06 PM

MazdaES

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Joined: Mar 2007

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RE: ECU Ground

That mind reading thing isn't working for us. What is the year and model number????

Oct 11, 2007 | 02:58 PM

crackerjakx

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Joined: Feb 2007

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RE: ECU Ground

Sorry, used to posting on year/model specific forums... It's a 2003 MazdaSpeed Protege.

Oct 12, 2007 | 06:36 PM

MazdaES

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RE: ECU Ground

http://protege5.ugly.net/#ac

This link is for a 2002. But the wiring diagrams would be similar, but I would definitely try to get a diagram that is specific to your car. But this might point you in the right direction.