Reversed polarity ignition coil?

2009 NISSAN ALTIMA
145,231 MILES • 2.5L • 4 CYL • 2WD • AUTOMATIC
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F IT FIX IT YOURSELF
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Had my ignition coil harness rewired and now I'm getting reversed polarity when I try to jump the car. Doesn't start. If possible, please share an ignition system harness diagram.
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Jul 13, 2025 at 10:21 PM
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STRAILER
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Yep, if you get the wiring wrong it will shut down the injector driver inside the PCM. Here is how the coil are supposed to be wired. Check out the images (below). Let us know if you need anything else.

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Jul 14, 2025 at 1:20 AM
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I tested to see if my starter was getting the correct voltage and the main power line is getting it's constant 12volts but the signal is getting - 12. What could be causing this?
Jul 14, 2025 at 7:41 AM
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STRAILER
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This is a starter question, can you please start a new thread for it, we only handle one problem per question.
Jul 14, 2025 at 11:59 AM
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