Help!! radio wont turn on after battery disconection
09-13-2009, 02:28 PM
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Help!! radio wont turn on after battery disconection I searched for 30 minutes but didnt find anything. I unhooked the ground the other day to work on my nitrous, I also removed my antena from the base. Now the radio will just show the time as if it is turned off and it is kinda blinking. It wont turn on or do anything. Any suggestions?
09-13-2009, 03:53 PM
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Could this be because the anti-theft is turned on for the HU? I'm assuming you have the stock HU.
If you have the stock HU when the alarm is armed is there a small blinking light next to the volume ****? If so that means that the theft unit is on. There is a code that has been set with the HU that needs to be entered in order for the radio to turn back on. Instructions are in the owner's manual.
Happened to me when I had to replace the battery in the spring. Luckily I had the code written down.
If you have the stock HU when the alarm is armed is there a small blinking light next to the volume ****? If so that means that the theft unit is on. There is a code that has been set with the HU that needs to be entered in order for the radio to turn back on. Instructions are in the owner's manual.
Happened to me when I had to replace the battery in the spring. Luckily I had the code written down.
09-13-2009, 04:36 PM
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Has your HU ever had one set? If not you get to chose the code when you set it. Found this in the Monsoon FAQ on how to reset if the code is lost. Not sure if this is still valid but I'm sure the dealer could help.
1. Press and hold presets 2 & 3 for about 10 seconds until the first three digits of the display code are displayed.
2. Write the numbers down.
3. Press the AM-FM button, write down the next three numbers.
4. Call 1-800-537-5140. When asked, enter dealer code 202108, press the * button, and enter the six digit code from the radio. You will get an unlock code, write it down.
5. Go back to the car, press the HR button and set the first two numbers, press the MIN button and set the next two numbers, then press the AM-FM button. The display will show SEC, indicating the radio is now operable and secure.
To remove the code, repeat step 5. you should see --- on the radio face indicating the code is now out of the radio.
1. Press and hold presets 2 & 3 for about 10 seconds until the first three digits of the display code are displayed.
2. Write the numbers down.
3. Press the AM-FM button, write down the next three numbers.
4. Call 1-800-537-5140. When asked, enter dealer code 202108, press the * button, and enter the six digit code from the radio. You will get an unlock code, write it down.
5. Go back to the car, press the HR button and set the first two numbers, press the MIN button and set the next two numbers, then press the AM-FM button. The display will show SEC, indicating the radio is now operable and secure.
To remove the code, repeat step 5. you should see --- on the radio face indicating the code is now out of the radio.
09-13-2009, 09:59 PM
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there is no light blinking, just the display kinda dims and flashes bright again. Just like it is turned off. Ive tried the reset sequence but It doesnt do anything when I push 2 and 3 for 10 seconds
09-14-2009, 09:15 AM
#6
Did you test the fuse? There are two power sources for the radio - constant (battery) power through the RADIO ACCY fuse and ignition controlled power through the RADIO fuse. The battery power will give you a clock display and will allow you to eject CDs but the radio won't turn on without the ignition controlled power.
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09-23-2018, 04:45 PM
#8
BUMP
I just started having the same issue. Courtesy lights won't come on either. COURTESY fuse for the lights, and the RADIO, RADIO ACCY, and PWR ACCY fuses were all replaced. The radio, eject works, but radio won't power on. Usually it goes into LOC mode after disconnecting the battery but now it's just showing the clock display, which I'm able to set the clock time. Pressing power on the radio does nothing. Hold 2+3 does nothing. Radio not getting ignition source power and courtesy lights are not getting power. Bad BCM? I have a kill switch on my rear bumper than I use to shut everything off when the car is stationary. Normally I just hit the switch and enter in the LOC code and everything works. What could be the issue? I guess I'll try BCM from the yard and do the VATS bypass trick and see if it solves the problem. Maybe I'll try replacing the transistor in the BCM first with a BUZ71A FET rated at 13 amps? Would a bad transistor cause the radio issue as well?
Posts 188 and 189 here look like what I need for BCM removal:
https://ls1tech.com/forums/general-m...ms-fix-10.html
VATS bypass:
https://ls1tech.com/forums/general-m...how-video.html
Seems like all I may need is a BCM from the yard and this VATS bypass box? Would this be the easiest and quickest solution?
http://www.3rdbrakeflasher.com/gm-va...lt1-p-182.html
I just started having the same issue. Courtesy lights won't come on either. COURTESY fuse for the lights, and the RADIO, RADIO ACCY, and PWR ACCY fuses were all replaced. The radio, eject works, but radio won't power on. Usually it goes into LOC mode after disconnecting the battery but now it's just showing the clock display, which I'm able to set the clock time. Pressing power on the radio does nothing. Hold 2+3 does nothing. Radio not getting ignition source power and courtesy lights are not getting power. Bad BCM? I have a kill switch on my rear bumper than I use to shut everything off when the car is stationary. Normally I just hit the switch and enter in the LOC code and everything works. What could be the issue? I guess I'll try BCM from the yard and do the VATS bypass trick and see if it solves the problem. Maybe I'll try replacing the transistor in the BCM first with a BUZ71A FET rated at 13 amps? Would a bad transistor cause the radio issue as well?
Posts 188 and 189 here look like what I need for BCM removal:
https://ls1tech.com/forums/general-m...ms-fix-10.html
VATS bypass:
https://ls1tech.com/forums/general-m...how-video.html
Seems like all I may need is a BCM from the yard and this VATS bypass box? Would this be the easiest and quickest solution?
http://www.3rdbrakeflasher.com/gm-va...lt1-p-182.html
Last edited by 5.7stroker; 09-23-2018 at 05:23 PM.
09-24-2018, 10:55 AM
#9
If you still have working power windows then you can assume that the RAP circuit in the BCM is not the reason for your radio problem. The first thing to do is determine if power is getting to the radio connector. You can assume the battery power (orange wire) is okay since the clock works. You want to check the yellow wire to see if you are getting power with the ignition on. That will tell you whether the problem is with power circuit or with the head unit itself. If you are getting power at the radio connector then the head unit is the problem. If you aren't getting power then pull the RADIO fuse and check that you are getting power to the fuse slot. If you have power at the fuse slot then either the fuse is bad or the wiring from the fuse panel to the head unit is broken.
As far as the courtesy lights go, do the map lights work? They are powered by the BCM but have a separate ground that isn't controlled by the BCM. If the map lights work then the problem would be that the BCM courtesy circuit is not providing the necessary ground. That could be the BCM itself or it could be the door switches.
As far as the courtesy lights go, do the map lights work? They are powered by the BCM but have a separate ground that isn't controlled by the BCM. If the map lights work then the problem would be that the BCM courtesy circuit is not providing the necessary ground. That could be the BCM itself or it could be the door switches.
09-24-2018, 12:02 PM
#10
I am getting power to the windows and the lights on the bottom side of the rear view mirror light up. The dome light on the roof doesn't light up. I'm wondering if that bulb is burned out? The small lights inside the door panel right above the window switches light up only when the head lights are turned on. I'll check power at the radio and fuse slot. Since the map lights are working, if it is the BCM courtesy circuit not providing the necessary ground then what would be the fix for that?
09-24-2018, 12:10 PM
#11
The door lights are not part of the courtesy circuit. Only the dome light and the mirror lights are part of that circuit. Do the mirror (map) lights go on with the door opening and fade when the doors close? If so then you probably just have a burned out bulb in the dome light. If not then it could be the BCM or the white (ground) wire from the lamps to the BCM.
09-24-2018, 12:14 PM
#12
The door lights are not part of the courtesy circuit. Only the dome light and the mirror lights are part of that circuit. Do the mirror (map) lights go on with the door opening and fade when the doors close? If so then you probably just have a burned out bulb in the dome light. If not then it could be the BCM or the white (ground) wire from the lamps to the BCM.
09-24-2018, 12:30 PM
#13
If your windows work and your mirror courtesy lights work then there is nothing wrong with your BCM. The radio problem is something specific to the radio circuit - either the head unit itself, the RADIO fuse, or the wiring from the fuse to the head unit. The dome light is probably just a bulb but could be a broken wire somewhere.
10-06-2018, 05:14 PM
#14
On the C1 connector 10 pin, I confirmed that pin 9 yellow (IGN) has power only when the key is turned (12.15v) and pin 10 orange (BAT) has constant power (12.15v also). Just used pin 5 for ground. Looks like it's a bad radio. Can it be repaired?
The CD player is model 16259811.
What year 4th gen trims can be possible donor cars? Did the 98-02 v6 camaro have the same head unit in them? Are these all the interchange models that would work? I can get a 09383045 for cheap but it doesn't say monsoon on it it says delco electronics.
09380141, 10300770, 10306067, 12370251, 12370918, 12371122, 12371137, 12496127, 15071244, 15071662, 15766822, 16194491, 16210141, 16228471, 16232131, 16232141, 16255321, 16255495, 16259801, 16259811, 16265881, 16265895, 9354195, 9367615, 9380141, 9381281, 9383821, 9383851, 09383045, 09383821
The CD player is model 16259811.
What year 4th gen trims can be possible donor cars? Did the 98-02 v6 camaro have the same head unit in them? Are these all the interchange models that would work? I can get a 09383045 for cheap but it doesn't say monsoon on it it says delco electronics.
09380141, 10300770, 10306067, 12370251, 12370918, 12371122, 12371137, 12496127, 15071244, 15071662, 15766822, 16194491, 16210141, 16228471, 16232131, 16232141, 16255321, 16255495, 16259801, 16259811, 16265881, 16265895, 9354195, 9367615, 9380141, 9381281, 9383821, 9383851, 09383045, 09383821
Last edited by 5.7stroker; 10-06-2018 at 05:22 PM.
10-08-2018, 07:10 AM
#15
Yes, the head units can be repaired but it is usually quicker and cheaper to just buy a replacement... there are lots of them on ebay.
There is no difference between a "Monsoon" head unit and a base head unit other than some of them had an extra Monsoon label on the face. Otherwise, they are just a standard Delco head unit. All 98-02 Camaro head units are interchangeable. Firebird head units will also work but they had some differences such as a graphic equalizer but no speed controlled volume. They were different colors as well - Camaros were black with blue-green illumination while Firebirds were grey with red illumination. Non-Bose Camaro head units from earlier 4th generation models will work but they look different (controls and display are different).
There were some electronic differences over the years. For example, if you want to use the optional external CD changer or auxiliary adapter with a CD head unit, you need to look for one from a 2000 or newer vehicle. In prior years, only the cassette head unit had the electronics to control those devices. This information is all covered in the Monsoon FAQ sticky at the top of the section.
There is no difference between a "Monsoon" head unit and a base head unit other than some of them had an extra Monsoon label on the face. Otherwise, they are just a standard Delco head unit. All 98-02 Camaro head units are interchangeable. Firebird head units will also work but they had some differences such as a graphic equalizer but no speed controlled volume. They were different colors as well - Camaros were black with blue-green illumination while Firebirds were grey with red illumination. Non-Bose Camaro head units from earlier 4th generation models will work but they look different (controls and display are different).
There were some electronic differences over the years. For example, if you want to use the optional external CD changer or auxiliary adapter with a CD head unit, you need to look for one from a 2000 or newer vehicle. In prior years, only the cassette head unit had the electronics to control those devices. This information is all covered in the Monsoon FAQ sticky at the top of the section.
