High-Pitched Frequency Update

zrider · 10-21-2010, 01:25 PM

Quote:

Originally Posted by getmecoffee

Yeah second that...any TSB numbers?

I called the place that zrider had his car fixed(passport nissan of alexandria) and they had no idea of a ECM problem...

sorry guys for not being around, but heres the separate thread i made. You should talk to Kurtis Krauth at passport from the service department. hes the one who had mine fixed. I dont know if theres an ACTUAL tsb because I think Nissan isnt trying to fix everyones, since only a certain amount of people can hear it. Hope this helps !

Apparent TSB for frequency noise

getmecoffee · 10-21-2010, 02:05 PM

just got off the phone with my place....they are ordering a new ECM...lets see how it goes...Thanks!

getmecoffee · 10-29-2010, 04:52 PM

ALL FIXED!!! They swapped out my ECM's and no more noise! Thanks everyone for all your help and direction!

shoopajae10 · 10-30-2010, 11:28 PM

^^ I called my place and he said he has never heard of a problem like this before but that he will look at it tuesday when i bring it in...

what are you saying or doing differently for them to order you a new ECM just like that over the phone????

Whats your secret?!?!?

getmecoffee · 10-31-2010, 09:02 AM

It's a warranty replacement of the ECM. Make sure you get someone to hear the noise, don't just drop off the car try to show them.

JB1 · 01-07-2011, 01:40 PM

Had my ECM replaced under warranty as well, noise is gone!!

spearfish25 · 01-21-2011, 01:04 PM

JB1 motivated me to get mine evaluated. New ECM on order

.

kenchan · 01-21-2011, 01:08 PM

mine's at (if i can remember...) ~6k so got 2more k's to go.

EazyD · 01-21-2011, 01:32 PM

I think I heard this sound when the fans were blowing the other day.. it went away when I turned the fan off. Is this something else? It's that same high pitched frequency computer power supplies make when they are going bad..

JungleB · 01-22-2011, 06:57 AM

I posted this on the first page of the thread, but I'll post it again. The high pitched noise sounds like this...

freesound :: view sample :: TONE 10 kHz 44.1 16bit.wav

Quote:

Originally Posted by EazyD

I think I heard this sound when the fans were blowing the other day.. it went away when I turned the fan off. Is this something else? It's that same high pitched frequency computer power supplies make when they are going bad..

EazyD · 01-22-2011, 12:17 PM

Quote:

Originally Posted by JungleB

I posted this on the first page of the thread, but I'll post it again. The high pitched noise sounds like this...

freesound :: view sample :: TONE 10 kHz 44.1 16bit.wav

Yeah, that's the noise I hear - but I only heard it when the fan was on. Must be something else, then. 1900 miles, 2010Z

Stosh Rickles · 06-18-2011, 11:17 PM

Did anyone see this update on the G37 forum thread re: the same issue? Seems like the logic was that an ECM mapped for ICC (in a car that didn't actually have it) was the problem.

"...apparently the database from the factory says that my car has intelligent cruise control, which it doesn't. Once they realized this, they were able to install the correct ECM with high-frequency fix. I've been running with this new ECM for several months, and it appears that the noise is pretty much gone..."

Posted this in my New Owner thread - didn't get any response.

spearfish25 · 01-21-2011, 02:11 PM

It sounds like your ears are ringing and you'll hear it best with your right ear directed at the passenger footwell. That's where the ECM is located which is the culprit. For the engineering types, it sounds like a highly charged capacitor. Think of your really old tube TV when you turn it on....high pitch noise.

Vaughanabe13 · 11-09-2011, 03:43 PM

Quote:

Originally Posted by spearfish25

It sounds like your ears are ringing and you'll hear it best with your right ear directed at the passenger footwell. That's where the ECM is located which is the culprit. For the engineering types, it sounds like a highly charged capacitor. Think of your really old tube TV when you turn it on....high pitch noise.

A "highly charged capacitor" is not correct, but it is most likely an issue with one or more capacitors. Ceramic capacitors are piezoelectric so an applied voltage will cause mechanical strain, and thus audible noise. They probably used ceramic caps with a high dialectric constant and these are affected by temperature so the ambient temperature in the car and the temperature on the ECU board will likely effect how much you hear the noise. The noise could also be harmonic distortion from a capacitor that has a rapidly changing applied voltage, such as a switching power supply.

Any way you cut it, the board was not designed properly by the engineers and it sounds like a subsequent PCB revision has fixed the issue.

kenchan · 11-09-2011, 03:50 PM

Quote:

Originally Posted by Vaughanabe13

A "highly charged capacitor" is not correct, but it is most likely an issue with one or more capacitors. Ceramic capacitors are piezoelectric so an applied voltage will cause mechanical strain, and thus audible noise. They probably used ceramic caps with a high dialectric constant and these are affected by temperature so the ambient temperature in the car and the temperature on the ECU board will likely effect how much you hear the noise. The noise could also be harmonic distortion from a capacitor that has a rapidly changing applied voltage, such as a switching power supply.

let me guess.... you dont have a gf?

01-07-2011, 01:40 PM	#6 (permalink)
JB1 Track Member Join Date: Mar 2009 Location: Chicagoland Posts: 748 Drives: 09 Nissan 370Z sold Rep Power: 19	Had my ECM replaced under warranty as well, noise is gone!! __________________ Black Fangs // Black rear Valance // Berk CBE // COBB post MAF tubes // K&N drop in filters // Setrab Oil Cooler // Stillen Sway bars // Z1 SS brake lines // Stillen brake cooling kit // Harness bar //

01-21-2011, 01:04 PM	#7 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1858	JB1 motivated me to get mine evaluated. New ECM on order . __________________ 2013 Cadillac V-Wagon, RIP Z

01-21-2011, 01:32 PM	#9 (permalink)
EazyD A True Z Fanatic Join Date: Nov 2009 Location: Massachusetts, USA Posts: 1,211 Drives: 2010 6MT Sport pkg. Rep Power: 27	I think I heard this sound when the fans were blowing the other day.. it went away when I turned the fan off. Is this something else? It's that same high pitched frequency computer power supplies make when they are going bad.. __________________ Pearl White 2010 370Z Sport, Stillen CBE, tint, K&N drop-in filters, GT-R start button, Kenwood DNX-6980 with backup cam, LED bulbs, Raceseng shift knob. Last edited by EazyD; 01-21-2011 at 02:01 PM.

01-21-2011, 02:11 PM	#13 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1858	It sounds like your ears are ringing and you'll hear it best with your right ear directed at the passenger footwell. That's where the ECM is located which is the culprit. For the engineering types, it sounds like a highly charged capacitor. Think of your really old tube TV when you turn it on....high pitch noise. __________________ 2013 Cadillac V-Wagon, RIP Z

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10-21-2010, 02:05 PM	#2 (permalink)
getmecoffee Base Member Join Date: Nov 2009 Location: NY Posts: 52 Drives: Nissan 370Z Rep Power: 17	just got off the phone with my place....they are ordering a new ECM...lets see how it goes...Thanks!

10-29-2010, 04:52 PM	#3 (permalink)
getmecoffee Base Member Join Date: Nov 2009 Location: NY Posts: 52 Drives: Nissan 370Z Rep Power: 17	ALL FIXED!!! They swapped out my ECM's and no more noise! Thanks everyone for all your help and direction!

10-30-2010, 11:28 PM	#4 (permalink)
shoopajae10 Track Member Join Date: Oct 2009 Location: Over Yonder Posts: 650 Drives: A White Sports Car Rep Power: 18	^^ I called my place and he said he has never heard of a problem like this before but that he will look at it tuesday when i bring it in... what are you saying or doing differently for them to order you a new ECM just like that over the phone???? Whats your secret?!?!?

10-31-2010, 09:02 AM	#5 (permalink)
getmecoffee Base Member Join Date: Nov 2009 Location: NY Posts: 52 Drives: Nissan 370Z Rep Power: 17	It's a warranty replacement of the ECM. Make sure you get someone to hear the noise, don't just drop off the car try to show them.

01-21-2011, 01:08 PM	#8 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141522	mine's at (if i can remember...) ~6k so got 2more k's to go.

06-18-2011, 11:17 PM	#12 (permalink)
Stosh Rickles Base Member Join Date: Jun 2011 Location: Pittsburgh Posts: 31 Drives: 370Z Touring/Sport Rep Power: 15	Did anyone see this update on the G37 forum thread re: the same issue? Seems like the logic was that an ECM mapped for ICC (in a car that didn't actually have it) was the problem. "...apparently the database from the factory says that my car has intelligent cruise control, which it doesn't. Once they realized this, they were able to install the correct ECM with high-frequency fix. I've been running with this new ECM for several months, and it appears that the noise is pretty much gone..." Posted this in my New Owner thread - didn't get any response.