Need Help Center Speaker Failed

[haze10]

I went to swap out the center console B&O speaker for an Infinity Reference. Check polarity. Installed the resistor and capacitor. Swapped the original OEM socket. When I plugged it in and started the stereo, I get no response out of the speaker at all. Desoldeded the plug and moved it back to the original speaker, still no sound. All other speakers in the truck working. Tested the Infinity and the OEM speaker on my stereo and both work fine. Somehow I lost the signal to the center speaker. Did the swap with the truck and stereo off, nothing shorted. I don't know what else to do. Is there a fuse somewhere that might have blown? It was working before the swap. Any ideas?

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[haze10]

I searched he forums and discovered the B&O screen reset. I didn't get to do it. I started the truck again and the center speaker started playing. The screen booted with the Ford logo and then when the radio started all speakers, including the center, were working. Maybe cycling the truck on and off does its own reboot. Truck was off for about an hour.

 

[Jeff D.]

Nice when problems fix themselves. Doesn't happen often enough.

 

[Mavreezy]

I searched he forums and discovered the B&O screen reset. I didn't get to do it. I started the truck again and the center speaker started playing. The screen booted with the Ford logo and then when the radio started all speakers, including the center, were working. Maybe cycling the truck on and off does its own reboot. Truck was off for about an hour.

You're one lucky pup. Make sure you get down on all 4's and thank the Lord up above because that would've been one expensive boo-boo if you had fried something.

 

[colinl]

nah. even if you intentionally short a speaker, nothing happens at low volume.

he probably did short it, I've done it and it's not difficult to do with the cramped conditions and tiny factory wiring length for the center or several other speakers in the Mav.

I didn't know that it would disable a shorted speaker, but it does stand to reason that restarting the truck would reboot his audio module. holding power and FF would do the same.

 

[fossil]

Tested the Infinity and the OEM speaker on my stereo and both work fine.

Did you test the resistor and cap? Just to check all the boxes.

 

[haze10]

It failed again. This time cycling the truck, and cycling the screen, did not bring it back.
Yes, speaker with resistor and cap are working fine when tested with an alternate sound supply, external jack off my shop radio.

any idea what to do now. I can't understand how just unplugging and changing the speaker would cause a loss of signal.

No, did not short out the speaker, as verified it is not in contact with any metal, or even plastic, parts. Installed the speaker before I turned truck radio on.

What should I do now.

 

[colinl]

the answer is probably in your splice. when you said you soldered it, I assumed you cut off the molex connector. I did that, and mine works fine.

probe with your multimeter and check for voltage while playing music at a fairly low volume, say 6. if it's not there and you're anything less than 100% certain that the wires do not merge, then it's in the APIM. (if you think it could be cross-connected, cut some of the wire or remove the jacket where you would cut, and probe there.)

check the fuses in the passenger footwell. (the fuse listing is in the online owner's manual, and it's also correct on several 3rd party fuse diagram sites.)

you might already know this but in case it helps, this is definitely not the B&O amp. it doesn't do anything with the center, the center channel comes straight out of the Sync3 APIM.

 

[haze10]

I didn't cut the OEM connector. I desoldered the connector off the original speaker, and then soldered it to the Infinity. white/black wire to positive, all black to negative. Its not the speaker, as it plays fine when connected to my home stereo. There is no sound signal coming from the radio. I didn't check the fuses, but usually you don't have a fuse on a low level audio signal. The radio plays fine, and all other speakers work, so the B&0 amp must be getting an audio signal. Nothing is cross connected, nothing is shorted, there just is no audio coming over the wires. Happened last night, and by cycling the truck on/off/on the radio rebooted and it played. but next day I started the truck and it doesn't play. Tried cycling the truck on/off several times, and rebooting the screen with the 'volume/next' several times. IT would recycle fine, but didn;t solve the problem.

 

[colinl]

I didn't cut the OEM connector. I desoldered the connector off the original speaker, and then soldered it to the Infinity. white/black wire to positive, all black to negative. Its not the speaker, as it plays fine when connected to my home stereo. There is no sound signal coming from the radio. I didn't check the fuses, but usually you don't have a fuse on a low level audio signal. The radio plays fine, and all other speakers work, so the B&0 amp must be getting an audio signal. Nothing is cross connected, nothing is shorted, there just is no audio coming over the wires. Happened last night, and by cycling the truck on/off/on the radio rebooted and it played. but next day I started the truck and it doesn't play. Tried cycling the truck on/off several times, and rebooting the screen with the 'volume/next' several times. IT would recycle fine, but didn;t solve the problem.

my center channel speaker wires were not white/black and black. they were green and gray both with orange stripes, and green was positive. even though I have a '22 and you have a '24 I wouldn't really expect that to have changed.

did you try swapping them to make sure you didn't have the polarity reversed?

after you've done that I personally would put the stock back and see about getting your Ford dealership to look at it. you might be on the hook for diagnostic, hard to say, just talk to them and see. if they tell you to buy a new sync3 APIM I would probably consider my options before doing that.

how does it sound with the center disconnected?

 

[haze10]

Mine is a 2024 Lariat, and the colors are as I stated. I did try reversing, but that made no difference. I plan to put the original speaker back in and if necessary take it to ford. I was hoping it was something simple, like a reboot procedure.

 

[colinl]

Mine is a 2024 Lariat, and the colors are as I stated. I did try reversing, but that made no difference. I plan to put the original speaker back in and if necessary take it to ford. I was hoping it was something simple, like a reboot procedure.

So, yeah. Try to update your sync3 first of all. (Search here for the procedure, if you have 8GB+ USB thumbdrive handy.)

If it doesn't need updating, reboot it manually: hold power and skip forward until the screen goes black. It does fully reboot sometimes at cold-start, but often, it does not if you have driven the truck recently and you have good battery voltage. (The infotainment starts faster if it's not all the way off, is my guess.)

The last thing you can try is disconnecting the battery. Pull the negative terminal and wait 5 min, then reconnect.

 

[haze10]

Wire color: just check, the dash wires of the speaker are green with white strip and blue with white strip. The speaker wires after the pull apart plug are black/white and all black.

I'm going to double check polarity, but don't think that would eliminate the signal.

 

[haze10]

I have the original OEM speaker installed. I did the screen reboot. Then I did the Sync3 reset to factory defaults. Current software is up to date. Nothing worked. Center speaker is still dead. Guess its a dealer item now. Bit reluctant to disconnect battery. I know how, just don't know if there is any special protocol after I reconnect it.

 

[haze10]

Disconnected the 12V battery for 30 minutes. Re-attached, started truck, did NOT fix the problem.

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