Original speaker problem

Voice coil could be burned, rhus no sound. OR, there is a break in speaker wire door.

Put a known working speaker into the door to rule out speaker being the problem. If working speaker does not work, then it is radio or the wire for that speaker (speaker all the way to the back of radio).

 

It’s very unlikely that problem is connection behind the radio. And if you have JBL in your car then speakers are actually connected to amplifier under driver seat.

I would still go for the door as problem in the speaker connection problem on the speaker or the wiring problem in where wires go to the door are all more likely than problem in amplifier/radio.

 

Did the tweeter also stop working? If both the woofer and tweeter stopped working, it's most likely wiring, with the second most likely thing being that that channel of the amp blew on the amplifier/CD player (depending if JBL/non-JBL). If just the woofer stopped working, it's probably a blown woofer.

If would help us diagnose if told us JBL vs. non-JBL. You can tell you have the JBL system if there's a center speaker behind the center screen.

If you don't have the JBL system, you can access the wires to speaker at the tweeter. There's a 4 pin connector that's not hard to get at once you take off the door panel and the tweeter. Two of the wires connect to the CD player and then the other two pass the signal to the speaker. You can use a bookshelf speaker to check if you're getting signal to that point from the CD player, and then use a stereo amplifier to send signal to the woofer and see if it's working.

If your woofer is blown (and it's non-JBL), I'd sell you one for $5 + shipping. I have 4 of them taken out from when I replaced mine with aftermarkets.

 

On a normal car, this would be what I would suggest. However the speakers in the Prius have rivets that need to be drilled out to replace the speakers, so once they're removed, they are not easy to replace. I'd confirm the speaker is blown by accessing the wiring to speaker from the tweeter as mentioned above for non-JBL, or from the amplifier for the JBL system and confirm that the woofer is blown prior to drilling out the rivets.

 

Take a new length of speaker wire and carefully tape it to the POS and NEG leads of the factory door speaker. Connect the other end to a known working speaker.

Way easier this way.

 

can any one provide us a full diagram for jBL speaker system so maybe we can tracing the wiring from - to

 

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What are you trying to do? I didn’t understand “tracing the wiring from – to”.

 

from speaker in the left and right front to amplifier

 

do a forum search. the complete diagram is in here somewhere.

 

i have all speakers work ok but one in the left front door ... worked but not laood

 

the LF speaker is probably bad. pretty easy to remove the door panel and hook up a known good speaker to LF speaker wires.