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Go to the dealer and have the unlock code reapplied. You are probably locked out, if you get no sound at all. If you get sound from some speakers, but not all... it's a wiring or blown speaker issue. Remove the unit from the dash and check the wires. If you suspect a blow speaker(s), remove one from the mounting location and move it to a known location where a speaker works and plug it in. Crutchfield makes replacements that fit your car in many price ranges.
Make sure the positive and negative wires for the speakers are correctly(not reversed) and securely attached to the mounted speakers and the speaker outlet wires on the deck
No speakers are not fused.. It is most likely a speaker wire that has gone to ground so they would have to be traced to each speaker to see if you can find the short
if im understanding correctly what you wrote. you hooked up the headunit to the car and no sound from speakers, then you hooked up a single house speaker up and that speaker works fine. the Ohms on the car speakers might be too high, but most likely sounds like the wires to the speakers are bad.
Check the speakers if they work. Connect the speaker terminals using a short wire to a 1.5 volt battery (AA or any dry cell batter) and listen if there's a thumping sound when the wires are connected to the battery terminals. If there's no sound, your speakers are busted. If there's a sound, check if the wires are okay. Use the same method with the battery with the wires from the back of your stereo. Make a small cut on the wire and attach the short wires you used earlier.
Did it fail while you had vehicle, or like this when you bought it? Could be bad radio or wiring harness was chopped up when previous owners had an aftermarket radio installed. They probably just slapped the OEM radio back in when selling car. And didn't put all the OEM wiring back in.
if no sound from both speakers check fuse, if some hissing or humming on full volume then its a fault in oscilator section if there is no hiss or hum at full volume its a breakage in the wires of speakers, if one speaker is ok its aagain a wire open problem in out put section open up the speakers and just apply 1.5 volts dc for fraction of second to the speaker leads , if theres crackling the speaker is ok also see for torn out cones or stuck cone or speaker coil open.
Sir,
I do not want to insult you in any way, but I must ask just in case it was overlooked! First check to be sure that the speaker settings on the stereo were not set all the way to the front. If that is not the problem, you can hook another speaker you know works to the wireing to the rear speakers to check to see if it is the speaker or the wireing. If you hear sound from the speaker you know works, then your speakers in the car are bad. If you do not hear sound, then it will be from the wireing. Next is the more difficult part. You will have to pull the stereo out and can splice into the wires. Hook the good speakers up to the splice and check for sound. make sure you know for sure the wires you splice into are for the rear speakers. If you still hear no sound, then it is more then likely a problem in the stereo itself. If you do hear sound then there is a problem in the wireing somewhere and may be easier to just run new wires to the rear speakers.
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