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no sound
07-11-2011, 07:51 AM
Post: #1
no sound
I have an 07 Grand Cherokee with no sound the CD shows the radio is working. The amp is under the front seat Iam wondering if this could be the cause.All the equip. is stock.
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07-11-2011, 09:15 AM
Post: #2
RE: no sound
I presume there's no sound in any mode... radio or CD, right? There is more than one fuse for the system so double check that first.

The amp also has protection built in for a short in any speaker wire so if you can think of any old collision repairs or a worn spot in the carpet or (number one in my book) a poor running condition that may have caused the exhaust to over heat.... pull up the carpet and examine the harness. The last guy who posted a similar question found the harness had melted just over the cat converter. He installed some new wires and routed them a bit different to get away from the heat.

Let us know if this helps.
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07-11-2011, 06:56 PM
Post: #3
RE: no sound
I only found 1 fuse under the dash,but I did remember that this happened 2 months ago, I pushed on the plug on that unit under the passenger seat and the sound was on again.I did the same thing this time but it didnt work.
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07-11-2011, 09:09 PM
Post: #4
RE: no sound
If pushing on the plug worked the last time you may need to pull the connection apart this time. Look for dirt, corrosion, melted wires, or any other damage. If you don't find any damage, clean the connection and try it again. May-be while it's apart you can use a test light to see if there is power there. If that doesn't work you will likely need to follow the steps that Rupe provided.

Please keep us posted as to your progress.

Thanks for using the forum,
Garner

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07-11-2011, 09:42 PM
Post: #5
RE: no sound
Yes, was just thinking the same thing.

The guy who posted similar last year mentioned melted wires under the carpet so perhaps your last attempt at jiggling the plug also jiggled the wires and removed an intermittent short.

BTW, a short in the speaker wires may not blow the fuse but the amp will shut down internally to protect itself from damage. Certainly worth a look even though pulling the carpet up may be a bit of a pain.
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07-15-2011, 05:17 PM (This post was last modified: 07-15-2011 05:24 PM by njerome2002.)
Post: #6
RE: no sound
(07-11-2011 09:15 AM)Rupe Wrote:  I presume there's no sound in any mode... radio or CD, right? There is more than one fuse for the system so double check that first.

The amp also has protection built in for a short in any speaker wire so if you can think of any old collision repairs or a worn spot in the carpet or (number one in my book) a poor running condition that may have caused the exhaust to over heat.... pull up the carpet and examine the harness. The last guy who posted a similar question found the harness had melted just over the cat converter. He installed some new wires and routed them a bit different to get away from the heat.

Let us know if this helps.

Well I got a chance to pull the carpet today no burnt wires they all look in good shape.I dont know maybe it is the amp.
Well I got a chance to pull the carpet today no burnt wires they all look in good shape.I dont know maybe it is the amp.
Well I got a chance to pull the carpet today no burnt wires they all look in good shape.I dont know maybe it is the amp.
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07-15-2011, 06:46 PM
Post: #7
RE: no sound
Did you use a test light to see if power was getting to the amp?

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Garner

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07-15-2011, 08:16 PM
Post: #8
RE: no sound
I have a tester but dont know exactlly how to do it.
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07-15-2011, 11:06 PM (This post was last modified: 07-15-2011 11:11 PM by Garner.)
Post: #9
RE: no sound
If it is a test "Light" where a bulb lights to let you know that there is power, try it on the battery first to be sure it works. If the light works, unplug the amp, find a good ground to ground the light, turn the key, radio, etc., on as if you were going to listen to the radio, and probe the connector to see if the light lights. There should be at least one hot wire going to the amp to power it. If you can't find a hot wire then you need to back up the harness while checking for damaged wires, more connectors, fuses, switches, etc.. Clean all connections along the way. If you can help it, DON'T poke holes in the wire coating with the test light. Try checking at connectors. If you don't understand this procedure you may want to recruit some professional help. They may be able to save you a lot of time & money.

Thanks for using the forum,
Garner

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07-16-2011, 08:03 AM
Post: #10
RE: no sound
I tested the plug and there is power to it.
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