no power to ignition coils, will not start

2000 NISSAN MAXIMA
400,000 MILES • 3.0L • V6 • 2WD • AUTOMATIC
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VASILIS
  • MEMBER
  • 5 POSTS
Don't know what to do. Fuse 58 good. Seems i'm getting no power to ignition coils.
Jun 27, 2021 at 8:49 AM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Hi,

First, confirm there is power both to and from the fuse. Here is a link to help:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Next, each one of the ignition coils will have a red wire going to it. Check each for power. Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-wiring

If you find there is power, then check the black wires on the coils for continuity to ground. I circled and highlighted the ground location in the pic below. Note that all coils do have that common ground point, so that could be the issue as well.

Let me know what you find or if you have other questions.

Note: I believe I answered another question that may be yours. I suggested the crankshaft position sensor. If you have power and ground, that reinforces the idea that the sensor is the likely cause.

Let me know what you find or if you have other questions.

Take care,

Joe

See pic below.
Jun 27, 2021 at 3:46 PM
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VASILIS
  • MEMBER
  • 5 POSTS
Car wont start. Security light not indicating engagement. No power to coils.
Jun 28, 2021 at 5:16 AM (Merged)
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Hi,

The most common cause is a faulty crankshaft position sensor (CKP). If you have a live data scan tool, see if there is an RPM signal when cranking. If there isn't, suspect the CKP.

Take a look through this link. It explains common symptoms with a faulty CKP. Let me know if it seems to mirror what you experience.

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

If you find the sensor is bad, here is a link that shows in general how to replace one.

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

If you look at the attachments below, they provide the directions specific to your vehicle for inspection and replacement.

Also, if you haven't checked for diagnostic trouble codes, that is something that should be done. It may indicate where the problem is coming from. Here is a quick video showing how it's done.

https://youtu.be/YV3TRZwer8k

I realize most people don't own a scan tool. See if there is a parts store that will lend one to you. If you do scan it, let me know what codes are found.

Let me know what you find.

Take care,

Joe
Jun 28, 2021 at 5:16 AM (Merged)
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