really need wiring diagram for 1990 Chevy Beretta GT 3.1 liter V6

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LisaMartinez
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really need wiring diagram for 1990 Chevy Beretta GT 3.1 liter V6

Postby LisaMartinez » Thu Feb 27, 2020 3:23 pm

Really need wiring diagram for 1990 Chevy Beretta GT V6 3.1 liter. Need to know where the rpm signal comes from. And if I can check injection pulse at Connected or PCM??



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Rettax3
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Re: really need wiring diagram for 1990 Chevy Beretta GT 3.1 liter V6

Postby Rettax3 » Thu Feb 27, 2020 10:34 pm

PM replied to for the RPM (Tach) signal info... Yes, you can check injector-pulse at the injector-harness four-pin connector, or even the PCM, the noid-lights just don't plug in to either harness like they do the injector connector.


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LisaMartinez
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Re: really need wiring diagram for 1990 Chevy Beretta GT 3.1 liter V6

Postby LisaMartinez » Thu Feb 27, 2020 11:07 pm

2010-07-02_012635_3.1_ECM_fig4.gif



LisaMartinez
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Joined: Sun Sep 29, 2019 6:35 am
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Re: really need wiring diagram for 1990 Chevy Beretta GT 3.1 liter V6

Postby LisaMartinez » Thu Feb 27, 2020 11:11 pm

This diagram matches, I'm familiar with this graph so if you were to say C12 wire I'd be familiar, quick learner




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