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Crankshaft position sensor

Tiny
12VOLTTECH
  • MEMBER
  • 1996 NISSAN 200SX
  • 2.0L
  • 4 CYL
  • FWD
  • MANUAL
  • 600,000 MILES
Crankshaft position sensor. Can you tell me if I am supposed to have a 5 V reference signal on the black wire at the crankshaft position sensor? Also, what should my resistance be when the engine is running? And how should I test the voltage on the crankshaft position sensor when the engine is running? Any assistance would be greatly appreciated. Thank you so much for your time.
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Friday, September 15th, 2017 AT 4:43 AM

8 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
I would say your blue wires is the 5 volt reference. Just check to make sure the sensor is not open. The only way to fully test the sensor is to read the waves which is done with an oscilloscope.

Here is a guide and some wiring diagrams (below)

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Please let us know what happens and upload pictures or videos of the problem.

Cheers, Ken
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Saturday, September 16th, 2017 AT 7:12 PM
Tiny
12VOLTTECH
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I guess what I need to know is, I have a black and white wire at my CPS. From what I am seeing in the manual I should have 5volts on the black wire. I do not have 5 volts on that wire. The CPS is new. Also the car runs and drives fine until it gets warm and it starts wanting to cut off. Also I can turn off the check engine light off anytime warm or cold and it will run fine and the light will not come back on again until the ley gets cycled off on. So I guess I need to know is there some kinda of fuseable link between the CPS and the ECM? Also a pin out of the ECM would be very helpful.
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Saturday, September 16th, 2017 AT 9:37 PM
Tiny
KEN L
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  • 47,643 POSTS
There is a pin out diagram in the above post. It sounds like the ECM is going out to me.
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Sunday, September 17th, 2017 AT 12:04 PM
Tiny
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  • 5 POSTS
I have replaced that also.
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Sunday, September 17th, 2017 AT 2:58 PM
Tiny
KEN L
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  • 47,643 POSTS
Then you are on the right track with the pin to pin check it sounds like you have a wire pinched somewhere.

Here is a guide so you can do some testing.

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

Please let us know what happens and upload pictures or videos of the problem.

Cheers, Ken
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Monday, September 18th, 2017 AT 10:55 AM
Tiny
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  • 5 POSTS
I got it figured out. I have been sold the wrong sensor twice. The first two sensors have been to short to see the flywheel. I went to a junkyard today and found a car like mine and took the sensor out and put it in mine. Problem solved. Thx for ur assistance.
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Monday, September 18th, 2017 AT 11:56 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Good to hear, please use 2CarPros anytime we are here to help.

Cheers, Ken
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Tuesday, September 19th, 2017 AT 9:34 AM
Tiny
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Will do sir. Ty
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Tuesday, September 19th, 2017 AT 12:53 PM

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