Weird . . .Pioneer AVH-P3200BT, Powers Up But No Sound

So I had to disconnect the battery for a couple hours on my 2006 DC 2WD
I turned the ignition and lights off and took the keys out. . . . then took the negative side of the battery off.
Nothing unusual.
Finished up what I was doing and reconnected the negative side back to the battery. . . I saw a few very small sparks for a split second as I reconnected the terminal . . . not a 'pop' or 'crack' . . . I could barely see /hear the sparks.

Everything else works 100%.
But the radio now has no sound . . . but the display itself powers up fine.
Even the bluetooth feature in the unit sees my phone and will make a call . . . but w/o sound.
Backup camera works as it should.
I read the Pioneer manual and did both of the factory re-sets . . . still no sound.

There is a USB port, I connected my phone too . . . it recognized the phone with an audible power-up chime from the phone . . . I tried playing pandora as I normally can . . .but no dice.

There is one 10 amp fuse/ holder (non factory) next to the 3 fuse/ relay boxes under the hood. I'm assuming it's for the radio (could be wrong) . . . I pulled it and it appeared fine. (flat type)

I stopped chasing fuses after that . . .my thinking was because the unit itself powers up and is 'trying' to work it's got power and is semi-working.

There is no additional amp anywhere that I am aware of . . . i don't see one under the seats in the cab . . . unless there's something way up under the dash.

I feel like it's a setting that I'm missing in the unit itself . . . either that or I fry'd a 'portion' of the audio system.

Any advice to help trouble shoot this would be appreciated.
Seems like it could be something simple I'm missing.

TIA

 

Stupid question, but did you check the volume doesn't zero out with no power? Also, did you try balancing and fading?

 

Are you bypassing the factory amp?

 

I'm not exactly sure what you mean about zero'ing out with no power (sorry). I've held down the volume button on the steering wheel and ran it all the way up and down . . . and I've done the same using the volume button on the unit itself. But I haven't tried it with no power. I did move the balance and fade a little . . . but the 'icon' showed that things were centered front to back and left to right.

I didn't do the install on the radio, and i've never had it out or looked behind it, so I'm really not sure.
The owners manual for the unit has a copyright date of 2009 printed on the back . . . So I'd assume it was installed around 15 years ago.

Everything has always worked fine in the 4-5 years since I've owned the truck.
This didn't happen when I swapped out a new battery a couple years ago . . . and also a couple times when I had to disconnect the battery to do something on the truck like install the Hewitt bypass kit.

 

I mean, maybe the head unit goes to zero volume when the car loses power (same way your OEM clock resets to 12:00 after battery power gets pulled).

When you press the volume buttons on the steering wheel, do you see the volume go up and down?

I just looked up the Pioneer AVH-P3200BT. It's a fairly old unit. I was hoping to pull the manual and find it had two fuses on the rear, one for the head unit, one for the integrated amp, and maybe you blew a fuse. But it appears it only has one mini or micro 10A fuse. I'm pretty sure that fuse, if blown, would prevent the entire head unit from powering up. I guess you really should check under your passenger rear seat, in the cubby, under the plastic cover inside the storage cubby, to see if the installer bypassed the factory amp or not. That will dictate next steps.

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Thanks @shifty` . . . I looked everywhere that I could, under back seats too, and don't see an amp . . . so I'm assuming they used the factory amp.
just for peace of mind, last night I checked all the factory fuses from 7.5 up to 20 amps . . . everything looked good.
This really has me scratching my skull.
I may call Pioneer customer service, and to see if by luck they can walk me through a trouble shoot.

 

The amp you’re looking for is the factory amp. It’s usually behind the seat in DC trucks I believe.

 

https://www.tundras.com/threads/1st...ons-jbl-non-jbl-all-cabs.115324/#post-2967340

 

I'll take a look again . . . my drivers side seat has a annoying squeek . . . so I need to see if i can tighten it anyways.
Thank You.

 

In the '03+ years, the factory AC amp is under this plastic cover in the storage cubby.

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His profile says DC

 

Ah shit you're right. For some reason I thought he had an AC, but I was confusing him with @NickB_01TRD for some reason.

Yeah, check the thread @KNABORES linked. It has everything you need to know. And there's a very strong chance if the PO didn't bypass the amp, that's your issue. In which case you just need to get the apropos bypass harness and spend 1-2 hours removing the Crux or Axess unit they wired, and replacing it with the bypass harness. It's pretty easy job.

 

^ This.
If the radio had a separate factory amp, it would be behind or under the back seat.
S23 and S24

 

If it originally had the 6-speaker radio, there would be no separate amp.
That is what my 2005 SR5 had in it..

 

Nothing under the rear drivers side seat . . .


The passengers side just has the factory jack . . .


Nothing under the drivers seat . . .

And nothing under the passengers seat . . .

 

It's behind the plastic panel, driver's side, mounted to cab wall as @KNABORES and @1lowlife said, unless you have the 6-speaker config w/no amp. See the thread K linked.

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I'll pull that panel and check . . . I kind of doubt there's one back there.
The radio sounds good, but only average in the loud department . . . it doesn't seem 'bigger amp loud' . . . guess I'll find out.

 

Factory amp won’t be bigger amp loud, just adequate.

 

Sometimes HUs just peter out.
I'm on my 4th aftermarket HU in my 2014, 2 Kenwwods and 2 Pioneers....

The Pioneer I had in my 2005 lasted 8 years..


I used 1980s amps..


They don't make them like they used to.

 

I have a 90s Punch 75 under my seat. Powers my 90s 8” Kicker Solobaric.

 

According to the Owners manual it has a 'copyright' date on the back of 2009.
So it could be 15 years old . . . I was eyeing some newer more modern HU's . . . but I'm not ready financially to pull the trigger.

 

If the problem is with the OEM amp, then no amount of head units will solve that problem, but some basic wiring will.

 

Yeah. I agree.
Just got off the phone with Pioneer Customer Support . . . he walked me through some troubleshooting, but I'd already done everything they suggested short of pulling the HU and bench testing it.
I'm leaning towards the amp being bad, since as far as I can tell everything in the Pioneer 'seems' to be working properly.

 

Easiest way to tell would be to get a small speaker, pop out the head unit, find any of the speaker wire pairs (green/purple/white/grey, with a matching color striped wire), attach one pair to your test speaker. If you get sound, you know it's either the amp adapter they're using, or the OEM amp.

But I'd still check if there's an OEM amp before anything, and look for evidence someone spliced the factory amp wires, or used a bypass.

 

Pulled the back panel . . . . JBL . . . . stock unit I'm assuming?

 

Yup. If you’re able to test the amp, use a multimeter and see if it’s getting power

 

In case it helps, what work were you doing ?
Was the key in IGN ON position with radio possibly on ?

Have you checked fuses underhood, in particular the 30A RAD NO 3, which is the fuse that protects the amplifier. The radio itself is protected by RAD NO 1(BAT)/RAD NO 2(ACC) which appear to be good from what you describe.

 

I'm going to re-check those fuses you listed . . . I did it sort of quickly last night.
The stereo was probably on as I've never found a way to shut it completely off . . . in 'off mode' it still scrolls through a 'Demo Mode'.

I was working on the Hewlitt bypass kit on the other side . . . I was having an issue and they advised me that I should cut out the excess slack in the wires that I had left (about 10 inches too much). That went well and no CEL since.

Thanks for the feedback !

 

Just re-checked Rad-1 , Rad-2, and Rad-3 fuses . . . even checked continuity with a fluke tester to make sure.
They're good.

 

. . . OK , You guys are gonna trip on this one.
After I checked those 3 fuses, I fired up the truck to play around with the settings some more . . .
BOOM . . . radio comes on . . . all systems normal !
What the heck???