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There is a procedure you can try; did you find that in these postings? Good luck! And I'm glad my info helped someone.
I found a more permanent fix. The link is http://www.justanswer.com/honda/1bymn-causes-motorboat-noise-2005-honda-accord-h- - - ybrid.html. I think this fix is basically doing a permanent grounding from the dome light to the chasis which is the dealers' test procedure.
It took me a couple hours, mostly to figure out what I was looking at. I can summarize it here and it should only take about 30 min. Start by getting to the fuse box at the driver's left leg. In order to see, there is a flexible black plastic piece that has to be removed; the end by the engine side is easy. The end at the dash requires that the lower driver's side dash be loosened. To loosen the dash, there is a single Philips screw on the left and a clip on the right that goes into a metal bracket. The clip has to be squeezed then pushed through the bracket. The rest of the dash piece can be pulled away. Once the dash is loose, the flexible black piece can be popped. There are 3 white plastic clips that I pushed with a flat screw driver and pushed down.
Right above the fuse box are several wire harnesses and pin block connectors. There is a large brown and a large white pin block connector; these have to be unmounted by slipping a flat screw driver into the tab and pulling the whole block down. After these are off the mount, push them upward to see well.
The very top pin connector is a "8 pin"... It's actually a 10 pin connector, but two are not used. The far left top wire (1) is green and red; THAT IS THE ONE YOU WANT. To be sure you are on the right wire, count from the green-red; there are two open slots, then 2 more on the top row. The next row goes orange, yellow, black, yellow, yellow. The black is the 6th wire and is a ground.
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
1. Accord Hybrids with Navigations system: Turn the ignition switch to ACC (1) or ON (II)
2. Turn the Audio Unit off. (Radio on and Off button, push to off)
3. While holding down the upper part of both the "CH/DISK" and "SEEK/SKIP" buttons simultaneously, press the VOL/Pwr knob.
This will place it in Diagnostic mode...DIAG will appear in the upper window above the Nav unit.
Now while the engine is stopped and while in DIAG mode, turn the ANC ON and OFF by pressing the SCAN Button, you may have to push SCAN button ON and Off a couple times... While in the OFF mode, This will be displayed in the upper window above the Nav unit..... a low frequency hum (50HZ should be heard. While this low frequency tone is sounding turn the engine on and the sound should go away. IF it does your ANC is working and now is reset to the on position automatically. Now drive your car and see if the low frequency drone is gone!
If you do not have the NAV unit follow this procedure.
1. Turn the ignition switch to ACC (1) or ON (11)
2. Turn the audio unit ON.
3. While holding down both the "Preset1" and "Preset6" buttons simultaneously, press the AUDIO PWR knob.
4. "DIAG" will appear on the audio unit display to indicate you have entered the self-diagnostic mode.
NOW, while in Diag mode turn the ANC ON to OFF by pressing the #1 button, A LOW
frequency hum (50HZ) should sound for up to a minute. While this low frequency HUM is Sounding turn the engine on and the HUM should GO AWAY. Now drive your car and see if the low frequency drone has gone away!
There have been numerous cases where the ANC appears to toggle off all on its own.
Anyone have any ideas?
Any ideas?
Can you shower some details on replacing ANC like cost , what were all replaced etc... thanks
here is the link you can fix your problem.
http://www.youtube.com/watch?v=lnzQ7My--nk
Thanks for any help you can give me in this matter.
Thanks!
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.
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.
I have a link in the video to help describe the issue, it only comes from my front speakers. You may have to turn it up to hear what im speaking of.
https://youtu.be/3REPd7x3ckE