2009 Ram 3500 radio loses power
#1
2009 Ram 3500 radio loses power
The short version:
The radio will have power, then the next time I start it doesn't. There's no predictability, sometimes days, sometimes the next time I start.
I have taken the fuse box out, disassembled it, found no corrosion. Used my DMM and measured through the fuse output side to the terminal that connects to the blue connector under the fusebox and have good continuity.
Fuse has been replaced several times.
When the radio did not have power the output at the grey/red stripe wire in the blue connector read good voltage.
With key off, doors closed, pulling the radio fuse and reinstalling it something apparently resets and the radio has power when turning on the ignition.
I don't see where the FCM is or if it would control the radio power???
This schematic seems to be the correct one?
A pic of the FCM location and a verification that it does control the radio power would be appreciated.
The radio will have power, then the next time I start it doesn't. There's no predictability, sometimes days, sometimes the next time I start.
I have taken the fuse box out, disassembled it, found no corrosion. Used my DMM and measured through the fuse output side to the terminal that connects to the blue connector under the fusebox and have good continuity.
Fuse has been replaced several times.
When the radio did not have power the output at the grey/red stripe wire in the blue connector read good voltage.
With key off, doors closed, pulling the radio fuse and reinstalling it something apparently resets and the radio has power when turning on the ignition.
I don't see where the FCM is or if it would control the radio power???
This schematic seems to be the correct one?
A pic of the FCM location and a verification that it does control the radio power would be appreciated.
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I gave up.....
wired head unit to the key-on power from the driver side cigarette lighter socket, and the constant power from the passenger side socket.
Radio and cameras work now.
The headlight left on chime tells me when the old circuit doesn't work (again), no chime = reset fuse.
So now we'll see if the head unit power draw was the cause. Not ready to buy a new fusebox just yet.
wired head unit to the key-on power from the driver side cigarette lighter socket, and the constant power from the passenger side socket.
Radio and cameras work now.
The headlight left on chime tells me when the old circuit doesn't work (again), no chime = reset fuse.
So now we'll see if the head unit power draw was the cause. Not ready to buy a new fusebox just yet.