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This is a discussion on The Day the Music Died within the Gen II Prius Care, Maintenance and Troubleshooting forums, part of the Gen II (2004-2009) Toyota Prius Forums category; I hung up a call while driving today (Bluetooth), and my music never came back on. The XM seems to ...


The Day the Music Died

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Old 10-29-2009, 08:02 PM   1 links from elsewhere to this Post. Click to view. #1
efusco
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Default The Day the Music Died

I hung up a call while driving today (Bluetooth), and my music never came back on. The XM seems to find songs and stations, but no sound comes out no matter the volume setting.
Could this be a blown fuse? If so, which and what type? The MFD still beeps and looks fine.
Other ideas?
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Old 10-29-2009, 08:20 PM   #2
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You did hang up the phone, didn't you?
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Old 10-29-2009, 08:22 PM   #3
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Default Re: The Day the Music Died

Yea, and double checked, and have done 2 restarts... No change
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Old 10-29-2009, 08:24 PM   #4
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Default Re: The Day the Music Died

So it's Bye Bye Miss American Pie?
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Old 10-29-2009, 09:32 PM   #5
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Default Re: The Day the Music Died

Your car is toast. You should just give it to me since it's nothing but trouble. Buy a Hummer; I hear they are better for the environment.
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Old 10-29-2009, 10:26 PM   #6
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Default Re: The Day the Music Died

XM went out of business while you were taking that call.
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Old 10-29-2009, 11:09 PM   #7
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Are you sure the other person's phone disconnected?
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Old 10-29-2009, 11:14 PM   #8
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Default Re: The Day the Music Died

Quote:
Originally Posted by efusco View Post
I hung up a call while driving today (Bluetooth), and my music never came back on. The XM seems to find songs and stations, but no sound comes out no matter the volume setting.
Could this be a blown fuse? If so, which and what type? The MFD still beeps and looks fine.
Other ideas?
Hi Evan,

I assume you have an aftermarket config since you mention XM and Bluetooth on a 2004...

When making a phone call, are you using a hands-free mode where the sound comes through the speakers? If yes, then you can rule out a blown fuse since you can select various stations via the MFD (which proves the radio receiver assy has power) and the speakers work (which proves the JBL amp has power.)

The JBL amp has a mute circuit where the radio receiver sends a voltage to mute the amp when switching between various audio sources. When the amp is supposed to be working, the voltage on this circuit is >3.5V while the voltage is <1V when the amp is supposed to be muted.

Maybe this circuit is not working when the XM tuner is on and the mute voltage remains below <1V, thus keeping the amp silent. Or, maybe there's a problem with the XM tuner not providing an audio signal.

If you have a digital multimeter and feel like checking voltage on the mute circuit, see attached file.
Attached Files
File Type: pdf 2G Amp Mute Signal Circuit.pdf (61.2 KB, 32 views)
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Last edited by Patrick Wong; 10-29-2009 at 11:39 PM.
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Old 10-29-2009, 11:34 PM   #9
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Default Re: The Day the Music Died

Patrick,
That mute circuit thing sounds like the most likely issue, and I'd appreciate the details on how to check it. I did, just a bit ago, do a bluetooth call to make sure the speakers still work, and they do. Also, I don't think this is an XM issue b/c I get no sound with AM/FM/cassette...haven't tested a CD, but have no reason to think it would be the only thing working.
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Old 10-29-2009, 11:41 PM   #10
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Default Re: The Day the Music Died

Quote:
Originally Posted by efusco View Post
... I'd appreciate the details on how to check it.
Hi Evan,

See my prior msg and attached file.
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