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Cummins ISB cam sensor

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by 86mechanic, Apr 13, 2017.

  1. Apr 13, 2017 #1
    86mechanic

    86mechanic Medium Load Member

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    Not too familiar with these engines. Is that one with the angled connector the cam sensor?

    Thank you!
     

    Attached Files:

    86mechanic, Apr 13, 2017
    86mechanic, Apr 13, 2017
    #1
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  3. Apr 14, 2017 #2
    Heavyd

    Heavyd Road Train Member

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    The crankshaft position sensor is always inline along the block or front cover where about a crank main journal would be, or the center line of the crankshaft. The camshaft sensor will always be slightly higher as the cam is above the crankshaft in the block.
     
    Heavyd, Apr 14, 2017
    Heavyd, Apr 14, 2017
    #2
    86mechanic Thanks this.
  4. Apr 14, 2017 #3
    86mechanic

    86mechanic Medium Load Member

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    Ok good! That was it then. The crank sensor was right below it.

    Thanks
     
    86mechanic, Apr 14, 2017
    86mechanic, Apr 14, 2017
    #3
    Heavyd Thanks this.
  5. Apr 14, 2017 #4
    86mechanic

    86mechanic Medium Load Member

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    Hey @Heavyd on the crank sensor is it suppose to have a 12V signal as well or just the 5V?
     
    86mechanic, Apr 14, 2017
    86mechanic, Apr 14, 2017
    #4
  7. Apr 14, 2017 #5
    Heavyd

    Heavyd Road Train Member

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    Just the 5 volt.
     
    Heavyd, Apr 14, 2017
    Heavyd, Apr 14, 2017
    #5
    86mechanic Thanks this.
  8. Apr 15, 2017 #6
    86mechanic

    86mechanic Medium Load Member

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    Ok. I got a spn 190 fmi 2, the sensor is new and got 5 volts at the connector. So maybe a bad signal return wire or bad ECM !?
     
    86mechanic, Apr 15, 2017
    86mechanic, Apr 15, 2017
    #6
  9. Apr 15, 2017 #7
    Heavyd

    Heavyd Road Train Member

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    This is for crankshaft speed signal intermittent or incorrect. So double check the pins at the connector, and then follow the harness as best as possible. Broken wire or rubbed through somewhere.
     
    Heavyd, Apr 15, 2017
    Heavyd, Apr 15, 2017
    #7
    86mechanic Thanks this.
  10. Apr 15, 2017 #8
    86mechanic

    86mechanic Medium Load Member

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    I will check that. Thanks for your help!
     
    86mechanic, Apr 15, 2017
    86mechanic, Apr 15, 2017
    #8
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