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Radio turns on but no sound

Tiny
BORNALEDER
  • MEMBER
  • 2002 CHRYSLER TOWN AND COUNTRY
  • 3.8L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 161,000 MILES
I have the LXi model. It has radio P56038620AJ. There is a multi-disc changer mounted below the radio. My problem is that the radio turns on but delivers no sound to the speakers. I pulled the rear two speakers and noticed that there is mini-amps hooked to each one. It seems that power is getting back to these amplifiers but no other signal. I am stuck. I have read the other posts and am going to check to see if 12:00 shows up every time I restart the car. I wanted to give you my specific specs to see if you could help me pin point the problem.
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Tuesday, August 22nd, 2017 AT 5:01 PM

4 Replies

Tiny
BORNALEDER
  • MEMBER
  • 4 POSTS
I just checked to see if my clock switched back to 12:00 with every start. It does not reset with every start. The memory processor seems to be intact.
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Tuesday, August 22nd, 2017 AT 8:40 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,452 POSTS
It looks like those units share both the ground and power to the amplifiers. So to test both of them. Pull one of the rear speakers, Look at the connector on it. It should have six wires.
The dark green with gray stripe will be the battery positive line. Use a test light connected to a good ground to see if you have power to it. If you do not then check fuse 14. If it is okay test the speaker relay in the power module next to that fuse. (just swap it with one of the others with the same number of pins)
If you have sound the relay is bad.

If no sound, find a good bare steel ground spot and connect it to the gray wire with a dark green stripe. If you now have sound you have a bad ground connection. You could just leave the wire you added in if you make a good connection to the wire.

If none of this restores the sound it could be a bad head unit as it is unlikely that all of the amplifiers would go out at once.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester
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Tuesday, August 22nd, 2017 AT 10:30 PM
Tiny
BORNALEDER
  • MEMBER
  • 4 POSTS
I tested the dark green with gray wires on both sides. No power. I am getting it to light up with the gray with orange and gray with blue on the passenger side and the green with blue and green with orange on the driver side. Fuse 14 looks good. Relay adjacent to it tested fine when swapped out. I tested the ground circuit with my electrical tester and it tested good. Still no sound. It seems I am not getting any power to either amplifier but I am getting sound signal?
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Wednesday, August 23rd, 2017 AT 7:45 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,452 POSTS
Okay, no power to the dark green/gray suggests a break in that wire. As you do not have sound up front then the break is probably in the harness between the fuse box and the first amp. I would suspect the choke they show as it could have burned out. Or a simple broken wire. To see if it is just a lack of power you could run a test jumper from a battery positive feed to either of the dark green/gray wires. If you now have sound you can trace that wire in the harness from the fuse box. If you have access to a fox and hound tester it would be real handy to find the break.
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Wednesday, August 23rd, 2017 AT 12:23 PM

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