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Honda Accord Hybrid Harmonic Drone/Noise Suppression

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  • LISTEN UP DRONE NOISES - I read on here somewhere - some guy say - this noise is related to the Noise Cancellation System "if" you open the drivers door and it stops the drone noise. I laffed but got desperate enuff to try it before I spent thousands on repairs. IT WORKED!! The Noise Cancellation System cancels out noise of the 3 cylinders when in ECO mode. My stereo amp had a short which broke the circut on the Noise Cancellation System and with it off I had a loud drone. I fixed that and the drone was instantly gone - no expenses. Feel free to email me for more info: AlanMartin@mindspring.com
  • PF_FlyerPF_Flyer Pennsylvania Furnace, PAPosts: 6,374
    droneless said:

    My stereo amp had a short which broke the circut on the Noise Cancellation System and with it off I had a loud drone. I fixed that and the drone was instantly gone - no expenses.

    Nice fix!

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  • I have a permanent silution for this ANC system.
    Just go to the back of the stereo and find the 14-pin gray connector in the top middle.
    Once located the connector, go ahead and cut the black wire and connect it back.
    Put everything back and your ANC system should be disconnected.
    Test Drive the car and see if the booming, humming droning noise is gone.
  • I have a permanent silution for this ANC system.
    Just go to the back of the stereo and find the 14-pin gray connector in the top middle.
    Once located the connector, go ahead and cut the black wire and connect it back.
    Put everything back and your ANC system should be disconnected.
    Test Drive the car and see if the booming, humming droning noise is gone.

    I did this and it didn't work for me. Now I have to join that black wire again since I'm not sure what it does.

  • Does anybody have a solution that actually works? I tried the disable via DIAG mode and that didn't work either.
  • ghchawaii said:
    Back to the all important green and red wire. Cut that wire free then ground the wire some place to the chasis. I first "tapped" into the wire and grounded it; the noise went away, but the dome light stays on with the switch in the "door" position. After I cut it loose, the dome light works correctly and the noise is still gone. It cost me about $10 at Radio Shack for wire and a connector to splice in. Sure is a lot better than $400 to the dealer
    hi ghchawaii! hope you are still tracking this forum. so can you confirm that this "gray connector" is actually hidden above the big bunch of wire harnesses right above the fuse box under the driver side?

    also what do you mean "after i cut it loose, the dome light works correctly"?  cut what loose?  i get the part where i need to cut that green/red wire and ground it to the chasis.  but other than that is there anything else i needed to do?  please advise. this droning sound is giving me headaches.
  • problem solved! finally found the mysterious gray connector.  the huge brown and yellow connectors get in the way of seeing the gray connector.  you have to push that bunch UP and out of the way. then you'll see the gray connector. thanks ghchawaii!  your instructions helped me a great deal. 
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Honda Accord Hybrid Harmonic Drone/Noise Suppression - Page 5 - Car Forums at Edmunds.com