Need Help Wierd Issue

xxgary81xx · 01-16-2018, 11:28 AM

Lately when I turn on my car my car stereo will not play any music. If I put the car in ACC mode it will play with no issue, radio and bluetooth. After driving for about 15 minutes the stereo will then play music. I purchased a pioneer touch screen head unit 2.5 years ago from best buy and went there last week. They said everything is plugged in perfectly and nothing looks out of the ordinary. They gave the unit a reset and that did not fix the issue. I have an extended warranty with Nissan, but I know 100% the dealership will blame it on the stereo. What could cause an issue like this? I was thinking maybe the extreme cold our there but why would it work in ACC mode? Any suggestions, I dont feel like dealing with a bunch of ******** at the dealership. That's my last resort

RonRizz · 01-16-2018, 05:55 PM

My guess is its a head unit issue. Remove it, and check voltage at wiring harness in ACC and in Run. If both are good, its your unit. Is this a repeatable, ongoing issue??

xxgary81xx · 01-16-2018, 11:23 PM

The issue started last week. I know the tech at Best Buy and he said it makes no sense since it works perfectly in ACC mode. He checked the harness and everything else, said everything looks good. Why would an head unit only work instantly in ACC mode and take a while to work once the car is turned on fully. Its very baffling. I went on vacation for 5 days came back yesterday and it went right on. I started it today and it took 10 minutes, but in ACC mode it worked off the bat

RonRizz · 01-17-2018, 05:01 AM

by "checking the harness and saying it looks good" does that mean he eyeballed it, or did he put his DMM on the wires? My money is on a head unit issue, or a loose connection somewhere. Only 2 things that make sense to me.

bigaudiofanat · 01-17-2018, 01:50 PM

Sounds like it could be a lose wire in the dash or even a can bus issue with sending voltage. Do you have anything tied off your power wires for your head unit? You're about 2 hours from me if you need some help looking it over.

stansens · 01-23-2018, 10:08 AM

If hu works in acc then I would suggest harness. Possibly loose connection if crimp terminals were used or loose, damaged or oxidized pin in aftermarket harness. It's obviously a power supply issue in run mode that changes resistance values as car warms up. IMO the wiring should be investigated more closely

RonRizz · 01-26-2018, 04:26 PM

did we discover a fix for this yet?

01-16-2018, 11:28 AM	#1 (permalink)
xxgary81xx Base Member Join Date: Oct 2014 Location: hudson county nj Posts: 53 Drives: 2010 370z Rep Power: 10	Need Help Wierd Issue Lately when I turn on my car my car stereo will not play any music. If I put the car in ACC mode it will play with no issue, radio and bluetooth. After driving for about 15 minutes the stereo will then play music. I purchased a pioneer touch screen head unit 2.5 years ago from best buy and went there last week. They said everything is plugged in perfectly and nothing looks out of the ordinary. They gave the unit a reset and that did not fix the issue. I have an extended warranty with Nissan, but I know 100% the dealership will blame it on the stereo. What could cause an issue like this? I was thinking maybe the extreme cold our there but why would it work in ACC mode? Any suggestions, I dont feel like dealing with a bunch of ******** at the dealership. That's my last resort

01-16-2018, 05:55 PM	#2 (permalink)
RonRizz A True Z Fanatic Join Date: Aug 2011 Location: Pine grove, Pa Posts: 2,134 Drives: 2 feet, 3 pedals Rep Power: 6774	My guess is its a head unit issue. Remove it, and check voltage at wiring harness in ACC and in Run. If both are good, its your unit. Is this a repeatable, ongoing issue?? __________________ P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

01-17-2018, 05:01 AM	#4 (permalink)
RonRizz A True Z Fanatic Join Date: Aug 2011 Location: Pine grove, Pa Posts: 2,134 Drives: 2 feet, 3 pedals Rep Power: 6774	by "checking the harness and saying it looks good" does that mean he eyeballed it, or did he put his DMM on the wires? My money is on a head unit issue, or a loose connection somewhere. Only 2 things that make sense to me. __________________ P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

01-17-2018, 01:50 PM	#5 (permalink)
bigaudiofanat Car Audio Installer Join Date: Jun 2009 Location: Magnolia DE Posts: 8,342 Drives: 2012 Infiniti G37x Rep Power: 852	Sounds like it could be a lose wire in the dash or even a can bus issue with sending voltage. Do you have anything tied off your power wires for your head unit? You're about 2 hours from me if you need some help looking it over. wideglideleon and redondoaveb like this. __________________ Need help with car audio or electronics? Let me know!! Need Help Let Me Know Direct email address reimermatt@gmail.com Owner of: Dynamic Mobile Audio Follow me below https://www.facebook.com/Dynamicmobileaudio/

01-26-2018, 04:26 PM	#7 (permalink)
RonRizz A True Z Fanatic Join Date: Aug 2011 Location: Pine grove, Pa Posts: 2,134 Drives: 2 feet, 3 pedals Rep Power: 6774	did we discover a fix for this yet? bigaudiofanat likes this. __________________ P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

01-16-2018, 11:23 PM	#3 (permalink)
xxgary81xx Base Member Join Date: Oct 2014 Location: hudson county nj Posts: 53 Drives: 2010 370z Rep Power: 10	The issue started last week. I know the tech at Best Buy and he said it makes no sense since it works perfectly in ACC mode. He checked the harness and everything else, said everything looks good. Why would an head unit only work instantly in ACC mode and take a while to work once the car is turned on fully. Its very baffling. I went on vacation for 5 days came back yesterday and it went right on. I started it today and it took 10 minutes, but in ACC mode it worked off the bat

01-23-2018, 10:08 AM	#6 (permalink)
stansens Base Member Join Date: Nov 2015 Location: toronto, canada Posts: 144 Drives: 2016, 370z Rep Power: 192	If hu works in acc then I would suggest harness. Possibly loose connection if crimp terminals were used or loose, damaged or oxidized pin in aftermarket harness. It's obviously a power supply issue in run mode that changes resistance values as car warms up. IMO the wiring should be investigated more closely

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