OEM head unit no sound HELP - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

chi86 · 06-02-2019, 10:04 PM

I was trying to install a camera using the Autoharnesshouse kit. Did not disconnect battery because I'm a dummy. Went to connect one the 10-pin harness to the back and saw a spark. Got everything put back together, OEM head unit turns on but no signal to speakers. The screen works, it can read from USB, etc., just no sound. I've tried disconnecting the battery for a while, no effect.
The clock and dome light still work, so it's not a fuse (at least not the radio fuse). What else should I check? Or is the head unit fried?

chi86 · 06-02-2019, 11:08 PM

Update: checked amp and head unit fuse just to be sure, both look fine. Upon researching this further, I learned that I had probably spliced the camera's ground into right front speaker (-) (pin 5) instead of pin 7, the ground wire. I will adjust tomorrow and update the thread.

chi86 · 06-02-2019, 11:09 PM

I hope this works, because I might kill two birds with one stone: have my head unit working properly again and have a functioning rear view camera.
Either way, I have an Alpine ILX-007 standing by for install, just really hoping to get this speaker issue fixed first to be sure that the Alpine works too.

chi86 · 06-03-2019, 10:43 AM

Redid the camera ground wire today from pin 5 of the 10-pin harness to pin 7. Audio is back! Camera still doesn't work, but I'm done trying to get it to work at this point. I will try again when I'm installing that Alpine, maybe I'll have better luck then.

06-02-2019, 10:04 PM	#1
chi86 Member Join Date: Apr 2019 Drives: Asphalt Gray Base FR-S 6mt Location: Chicago, IL Posts: 16 Thanks: 3 Thanked 4 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	OEM head unit no sound HELP I was trying to install a camera using the Autoharnesshouse kit. Did not disconnect battery because I'm a dummy. Went to connect one the 10-pin harness to the back and saw a spark. Got everything put back together, OEM head unit turns on but no signal to speakers. The screen works, it can read from USB, etc., just no sound. I've tried disconnecting the battery for a while, no effect. The clock and dome light still work, so it's not a fuse (at least not the radio fuse). What else should I check? Or is the head unit fried? Last edited by chi86; 06-02-2019 at 10:17 PM.

06-02-2019, 11:09 PM	#3
chi86 Member Join Date: Apr 2019 Drives: Asphalt Gray Base FR-S 6mt Location: Chicago, IL Posts: 16 Thanks: 3 Thanked 4 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I hope this works, because I might kill two birds with one stone: have my head unit working properly again and have a functioning rear view camera. Either way, I have an Alpine ILX-007 standing by for install, just really hoping to get this speaker issue fixed first to be sure that the Alpine works too. Last edited by chi86; 06-03-2019 at 09:31 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
For Sale: Stock BeSpoke Premium Audio head unit with NAV unit	Glok24	Audio/Visual, Electronics, Infotainment, NAV	13	07-22-2018 12:34 AM
Looking for help adding sub and amp to existing 2016 FRS sound system and head unit	Sonicp9	Electronics \| Audio \| NAV \| Infotainment	2	02-27-2016 10:24 PM
BRZ Nav Head Unit	Sojhinn	Audio/Visual, Electronics, Infotainment, NAV	16	11-03-2013 06:02 PM
head unit swap speakers sound flat and muffled	iketiak	Electronics \| Audio \| NAV \| Infotainment	5	04-20-2013 08:48 AM
looking for a head unit for Fr-s like the Brz.	enjoi23	Electronics \| Audio \| NAV \| Infotainment	5	08-08-2012 02:51 PM

06-02-2019, 11:08 PM	#2
chi86 Member Join Date: Apr 2019 Drives: Asphalt Gray Base FR-S 6mt Location: Chicago, IL Posts: 16 Thanks: 3 Thanked 4 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Update: checked amp and head unit fuse just to be sure, both look fine. Upon researching this further, I learned that I had probably spliced the camera's ground into right front speaker (-) (pin 5) instead of pin 7, the ground wire. I will adjust tomorrow and update the thread.

06-03-2019, 10:43 AM	#4
chi86 Member Join Date: Apr 2019 Drives: Asphalt Gray Base FR-S 6mt Location: Chicago, IL Posts: 16 Thanks: 3 Thanked 4 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Redid the camera ground wire today from pin 5 of the 10-pin harness to pin 7. Audio is back! Camera still doesn't work, but I'm done trying to get it to work at this point. I will try again when I'm installing that Alpine, maybe I'll have better luck then.

User Name		Remember Me?
Password