CJREX

I just added a factory CD changer to my factory Monsoon system (2001 Camaro SS) and the head unit does not recognize that the changer is there.

The changer powers up and cycles through all the discs but I can't get the deck to access it.

I tried disconnecting the battery for an hour to see if the unit might see it when power restored but no dice.

Is my changer bad?

Any suggestions on how to make them talk to each other?

Thanks!

WhiteBird00

iTrader: (4)

Make sure you put the discs in upside down. The factory changer is the only one I've ever seen where the discs go in the cartridge with the label side down.

CJREX

Discs are loaded correctly.

WhiteBird00

iTrader: (4)

Just to eliminate the obvious - are you pressing the CD/AUX button twice to switch to the changer? (the first press switches to the internal single CD then the second press switches to the changer)

Next thing to check is that the changer cable is securely plugged into the back of the head unit. The power and ground wires in the changer harness run separately from the signal wires so the changer will power up even if the harness isn't plugged into the radio.

CJREX

Yes, I'm pressing the button.

I even took out the CD from the dash unit so it would be forced to look at the changer.

I'll double check the wires but I think they're tight.

I was thinking there might be a procedure that needs to be followed to make the head unit look for the changer, but I can't find one in my op manual.

VIP1

The GM9-AUX uses the CD-Changer port and tricks the headunit into thinking the AUX device is the CD-Changer, so this may be related. In the past I've had connection issues with my GM9-AUX adapter when the battery was going and eventually failed and when I had the headunit replaced a few times to due unrelated internal problems (display problems/failures). Also, when first connected, I noticed that it took about 30+ seconds for the sound to start. Sometimes the headunit would give up waiting and display an error and I'd have to try again later. Each time I've disconnected it or the battery was failing/failed it exhibited the same delay each time. Other than that initial delay, its worked fine.

I've done this a few times and it usually works.
Here is my test/fix procedure:
* Turn off the headunit and car
* Completely remove/unplug the heaunit from the car.
* Wait a few minutes.
* Reconnect the headunit minus the GM9-AUX (in your case CD-Changer)
* Test the headunit to make sure it works and that it doesn't see any CD-Changer.
* Turn off the headunit and car
* Reconnect the GM9-AUX (in your case CD-Changer)
* Turn on radio and try the GM9-AUX/CD-Changer
* Wait for it to sync and sound to come through
* If the headunit gives up and displays an error, wait a few minutes and try again.

I've had the failure last a few days and then work perfectly again until the next battery or headunit issue. Each time, there was nothing wrong with the GM9-AUX. The problem was either internal to the headunit (display problems/failures) or the battery was going (its one of the lesser known symptoms).

CJREX

Thanks for the info!

I'll give that a try on Friday (I'm in Houston all week )

Nick_Rapitis

iTrader: (15)

it will take up to two mniutes sometimes for the cdplayer to recognize and read all the disks in the changer, after that it will begin playing...that could be it, mine took forever the first time i put the disks in

CJREX

The changer reads all the discs and then loads and spools up disc 1.

I have taken the cover off and watched it operate.

It just never becomes accessible from the head unit.

Nick_Rapitis

iTrader: (15)

well does it still do it when it isnt plugged into the headunit? and are you using stock or aftermarket headunit?

CJREX

Stock Monsoon head unit

Nick_Rapitis

iTrader: (15)

try plugging it into a different camaro and see what happens

CJREX

I just realized that there are only 11 trays in my cartridge.

The 12th one is missing.

Could someone remove 1 tray and see if their changer does the same thing?

Thanks!

Nick_Rapitis

iTrader: (15)

i will bro next time i get a chance, its snowy out right now...should be able to tell you by tonight though

Nick_Rapitis

iTrader: (15)

sorry bro, i took one of mine out and it still booted up after about 30 seconds...you must have purchased either a bad changer or a stock cd player that isnt made to function with the changer

PSU 98

iTrader: (4)

I just had a similar problem, posted today. My used changer was shipped with a disc inside, and with a full cartridge inserted, it jammed up. Head unit did not recognize the changer at all. It seems strange that you have one just tray missing though, if it isn't the one in the player itself.

Nick_Rapitis

iTrader: (15)

yeah, it could be jammed in there so it wont work properly...dude call a dealership and ask them or have a sound shop check it out

CJREX

Thanks for checking that out for me.

I'm gonna try the detailed reset procedure above on Friday and see of it'll fly.

If not, I'm going to see about returning it.

Thanks again!

Nick_Rapitis

iTrader: (15)

no prob bro, good luck!

CJREX

Still no dice.

Anyone in the Atlanta area want to meet me somewhere and see if it'll work in your car just so I can rule out my head unit?

I'll buy your lunch!