Testing Crankshaft Position Sensor and Wiring

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Mar 28, 2018 | 08:58 PM

Danspeed1

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Testing Crankshaft Position Sensor and Wiring

Hello,

I just did a 0411 Conversion on a car I am working on. I am getting a no spark, no fuel situation and a Code P0355. One of the things I needed to do was extend the CPS wires. I just want to check the wiring to the ECM as well as the sensor itself. What is the best way to approach this. I have voltage at the green wire but past that I am not sure how to test the other 2.

Thanks,

Dan

Mar 29, 2018 | 10:14 AM

EFIHARNESS

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Does the fuel pump come on when you hit the starter ? If it does then the crank sender is ok as the ecu uses the signal to control fuel pump relay. Steve

Mar 29, 2018 | 06:00 PM

Danspeed1

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Quote:

Originally Posted by EFIHARNESS

Does the fuel pump come on when you hit the starter ? If it does then the crank sender is ok as the ecu uses the signal to control fuel pump relay. Steve

yes, well I guess that eliminates that?

Mar 30, 2018 | 08:25 AM

LilJayV10

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From: Evansville,IN

I am assuming you are data logging. Are you showing a RPM signal?

Apr 8, 2018 | 10:10 AM

Slow11CCZ71

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From: Greensboro, NC

Scope it. Signal wire and ground. If your waveform looks good and is making it all the way to the ECM, overlay with CMP waveform and check for proper sync.

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