Reversed polarity ignition coil?

Tiny
F IT FIX IT YOURSELF
  • MEMBER
  • 2009 NISSAN ALTIMA
  • 2.5L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 145,231 MILES
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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Monday, July 14th, 2025 AT 5:21 AM

3 Replies

Tiny
KEN L
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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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Monday, July 14th, 2025 AT 8:20 AM
Tiny
F IT FIX IT YOURSELF
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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?
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Monday, July 14th, 2025 AT 2:41 PM
Tiny
KEN L
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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.
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Monday, July 14th, 2025 AT 6:59 PM

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