I’m doing it! Black Headliner, Cracked Dash Solution and no more Vibrations
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From: Miami
Hmm, I did what you mentioned but with my caps open. Oh well, that is a good observation and amazing problem solving. Good work man! I am considering redoing my headliner again with charcoal and just do a complete delete of the envelope holder and the grab handles this winter. Keep up the good work.
I actually like the handles but to each their own. I tried doing the envelope holder delete but it didn’t turn out too good so I am keeping it.
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From: Miami
Is it possible that during your interior transformation a connector at the rear parcel shelf became disconnected?
1st- I would, if possible, put the OEM unit back in so you can run the On Board Self Diagnosis function (the Phoenix unit may/not be able to run this). From here you can check the speakers and the amp connection (FSM: AV p. 340-355).
2nd- as all of the speakers are individually fed directly from the amp, check the wiring from the amp to the shelf speakers. I have a old 3.5mm headphone pigtail that I plug into a mp3 player to check speakers- crude, but works (saved me w/ my headrest speaker project).
3rd- and I don't see this as a contributing factor, temporarily plug in the quarter panel speakers and see what happens. Maybe the amp internally sees this disconnection and cuts sound (?)... not likely, but...
4th- if everything seems to check out then you will have to check the wiring from the headunit to the amp. With all of the connecting/disconnecting and fumbling of harnesses, it is possible a wire got pinched/broken, or even a damaged pin. These are tiny wires and it does not take much to fatigue them...
1st- I would, if possible, put the OEM unit back in so you can run the On Board Self Diagnosis function (the Phoenix unit may/not be able to run this). From here you can check the speakers and the amp connection (FSM: AV p. 340-355).
2nd- as all of the speakers are individually fed directly from the amp, check the wiring from the amp to the shelf speakers. I have a old 3.5mm headphone pigtail that I plug into a mp3 player to check speakers- crude, but works (saved me w/ my headrest speaker project).
3rd- and I don't see this as a contributing factor, temporarily plug in the quarter panel speakers and see what happens. Maybe the amp internally sees this disconnection and cuts sound (?)... not likely, but...
4th- if everything seems to check out then you will have to check the wiring from the headunit to the amp. With all of the connecting/disconnecting and fumbling of harnesses, it is possible a wire got pinched/broken, or even a damaged pin. These are tiny wires and it does not take much to fatigue them...
Also, what does the woofer amp power? Is it just to lower 8” door speakers?
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From: Miami
The 6x9s in the rear deck are what’s not working. Your saying those are what are powered by the woofer amp? In the FSM they always refer to the big door speaker as the woofer and the rest as just “speakers” so I figured that’s what the woofer amp powered. They are also beefier than the 6x9s so it makes sense they would have their own amp.
So assuming the woofer amp powers the 6x9s, I guess something could be wrong with connection from the main amp to woofer amp or the woofer amp to the 6x9s.
(man it really seems weird the woofer amp wouldn’t be powering the big 8” woofers in the doors).
So assuming the woofer amp powers the 6x9s, I guess something could be wrong with connection from the main amp to woofer amp or the woofer amp to the 6x9s.
(man it really seems weird the woofer amp wouldn’t be powering the big 8” woofers in the doors).
Hey Sobeipl, I wanted to ask if it is possible to remove the headliner without removing the pillars? When I did mine I remove practically everything. I don’t want to remove everything all over again this winter if I just want to change the headliner portion.
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From: Miami
I highly doubt you can keep the B and C pillars in but I’ll give you a definitive next week. I’m installing my B and C pillars this week so I’ll evaluate the reasonableness of keeping them in when I see how they interact with headliner. Even if you could force it out with them on, it’s likely not going back in and probably more work then just unclipping them. But I’ll let you know
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From: Miami
@ILM-NC G37S
Yea, thanks for schooling me. You gotta admit tho it doesn’t make much sense.
Any chance you could tell me what to do with my multimeter to narrow down the issue? I disconnected a 6x9 and was getting 3.5 ohms (cheap meter probably not precise) same as the little rear quarter panels so maybe speakers are okay.
If I have music playing and put one lead on the + and one on the - I should get should some reading right? Is that safe to do? I’m a newb when it comes to using a multimeter.
The speaker makes some noise at high volume but it’s inaudible and mostly bass (although not loud). Also note I checked the 2 15amp fuses under left side of the dash and both are good.
Any advice to troubleshoot would be helpful.
Yea, thanks for schooling me. You gotta admit tho it doesn’t make much sense.
Any chance you could tell me what to do with my multimeter to narrow down the issue? I disconnected a 6x9 and was getting 3.5 ohms (cheap meter probably not precise) same as the little rear quarter panels so maybe speakers are okay.
If I have music playing and put one lead on the + and one on the - I should get should some reading right? Is that safe to do? I’m a newb when it comes to using a multimeter.
The speaker makes some noise at high volume but it’s inaudible and mostly bass (although not loud). Also note I checked the 2 15amp fuses under left side of the dash and both are good.
Any advice to troubleshoot would be helpful.
The A-Pillars you’ll definitely have to pull back b/ they definitely overlap too much.
I highly doubt you can keep the B and C pillars in but I’ll give you a definitive next week. I’m installing my B and C pillars this week so I’ll evaluate the reasonableness of keeping them in when I see how they interact with headliner. Even if you could force it out with them on, it’s likely not going back in and probably more work then just unclipping them. But I’ll let you know
I highly doubt you can keep the B and C pillars in but I’ll give you a definitive next week. I’m installing my B and C pillars this week so I’ll evaluate the reasonableness of keeping them in when I see how they interact with headliner. Even if you could force it out with them on, it’s likely not going back in and probably more work then just unclipping them. But I’ll let you know
Unfortunately, I can offer no guidance here. I have zero experience dealing with speakers and all that ohm and impedance crap. Hopefully someone more knowledgeable can offer some pointers. Things I would check:
1) Is the woofer amp getting 10V from the Bose amp (ON signal)?
2) Is the woofer amp getting 12V from battery?
Does this issue happen with both the OEM unit and this Tesla thing? Or one/the other?
1) Is the woofer amp getting 10V from the Bose amp (ON signal)?
2) Is the woofer amp getting 12V from battery?
Does this issue happen with both the OEM unit and this Tesla thing? Or one/the other?
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From: Miami
Well sh*t. It’s just the C pillars that are extra work to remove in the sedans which is why I asked. But I will not complain if I want to have my grab handles and envelope holder deleted. Also one more question, I compared the G37 and Q50 seat belts and they look almost identical. Can they be interchanged since you have experimented a lot with Q50 parts?
The coupe seatbelts are completely different from the sedan so I’m not sure on that either. I used GTR belts.
That top secret qx70 sport that nobody knows about which has black interior I’d be willing to bet has exact same belts as the sedan. If you can confirm the qx70 has the same belts, then all you gotta do is scan eBay for qx70 parts, fenders and tailgates are the best search items. Usually people parting out a car will snap a pic of the wrecked car as their main page listing even if listing is just for a fender. Find the sport, message them and ask for the seatbelts. That’s how I found my dome light assembly.
Thread Starter
Registered Member
Joined: Oct 2013
Posts: 622
Likes: 105
From: Miami
Unfortunately, I can offer no guidance here. I have zero experience dealing with speakers and all that ohm and impedance crap. Hopefully someone more knowledgeable can offer some pointers. Things I would check:
1) Is the woofer amp getting 10V from the Bose amp (ON signal)?
2) Is the woofer amp getting 12V from battery?
Does this issue happen with both the OEM unit and this Tesla thing? Or one/the other?
1) Is the woofer amp getting 10V from the Bose amp (ON signal)?
2) Is the woofer amp getting 12V from battery?
Does this issue happen with both the OEM unit and this Tesla thing? Or one/the other?
Yes. Always ground to car frame/metal.
With everything turned ON, at the WOOFER AMP connector you should read 10V at Pin 3 (GREEN) wire and 12V at Pin 7 (YELLOW).
At the BOSE AMP, you should have 10V (amp ON signal from headunit) at Pin 20 (WHITE), and 12V at Pin 10 (YELLOW) and Pin 11 (GREEN).
With everything turned ON, at the WOOFER AMP connector you should read 10V at Pin 3 (GREEN) wire and 12V at Pin 7 (YELLOW).
At the BOSE AMP, you should have 10V (amp ON signal from headunit) at Pin 20 (WHITE), and 12V at Pin 10 (YELLOW) and Pin 11 (GREEN).
Last edited by ILM-NC G37S; Oct 19, 2020 at 04:11 PM.
Your most likely gonna need to remove all the pillars but probably better to ask @deep0542 since has a sedan.
The coupe seatbelts are completely different from the sedan so I’m not sure on that either. I used GTR belts.
That top secret qx70 sport that nobody knows about which has black interior I’d be willing to bet has exact same belts as the sedan. If you can confirm the qx70 has the same belts, then all you gotta do is scan eBay for qx70 parts, fenders and tailgates are the best search items. Usually people parting out a car will snap a pic of the wrecked car as their main page listing even if listing is just for a fender. Find the sport, message them and ask for the seatbelts. That’s how I found my dome light assembly.
The coupe seatbelts are completely different from the sedan so I’m not sure on that either. I used GTR belts.
That top secret qx70 sport that nobody knows about which has black interior I’d be willing to bet has exact same belts as the sedan. If you can confirm the qx70 has the same belts, then all you gotta do is scan eBay for qx70 parts, fenders and tailgates are the best search items. Usually people parting out a car will snap a pic of the wrecked car as their main page listing even if listing is just for a fender. Find the sport, message them and ask for the seatbelts. That’s how I found my dome light assembly.
