Another speedo all indicators inop thread
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Stage II
Joined: Aug 2023
Posts: 2
Likes: 0
From: Virginia
Another speedo all indicators inop thread
Just bought a 2012 FLSTF. Rode it for the first time at night and everything goes off. It does come back on then intermittently go off.
Bad ground? BCM seems to be a common problem. Bike has 1700 miles and sat for a while.
Thanx in advance.
Bad ground? BCM seems to be a common problem. Bike has 1700 miles and sat for a while.
Thanx in advance.
Club Member
Joined: Apr 2007
Posts: 69,901
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From: South Florida
Hi there e-2012, welcome to HDF mate. While you are waiting for a reply, feel free to click HERE. <-- That will take you to the Welcome Area Only where you can tell us a bit about yourself, post a PIX of your bike if you like and it will give us guys a chance to say hi to you, get to you know you a bit and welcome you.
Stay well.....good luck with you bike.
BC7
Stay well.....good luck with you bike.
BC7
Road Warrior
Joined: Apr 2022
Posts: 1,514
Likes: 1,823
From: Omaha
Does a 2012 have a BCM? I thought the BCM and canbus didn't come out until 2014? I would start by checking your relay's and loose wires under the console.
Thread Starter
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Stage II
Joined: Aug 2023
Posts: 2
Likes: 0
From: Virginia
2011 1st BCM
BCM was introduced in 11'. However I have a voltage reg code and a speedo B2272.
The orange charge light did come on. Also weird the fuel gauge and range in speedo is way off to. I filled up rode 20 miles and the gauge is just on red, the fuel light is on and the Range shows 55 miles.
The previous owner said he dropped the bike. In fact, he bent the right side brake lever and throttle handle.
Does the BCM control the charging system or the BCM just senses the voltage to put on dash light?
The orange charge light did come on. Also weird the fuel gauge and range in speedo is way off to. I filled up rode 20 miles and the gauge is just on red, the fuel light is on and the Range shows 55 miles.
The previous owner said he dropped the bike. In fact, he bent the right side brake lever and throttle handle.
Does the BCM control the charging system or the BCM just senses the voltage to put on dash light?
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,593
Likes: 6,435
From: Honah Lee
Have you tried just unplugging the speedometer and replugging it?
Followed a lot of these BCM problems and used some of my services manuals to troubleshoot them. It goes page after pages of drop downs.
Just my opinion but you sure need you a good OEM service manual and the electrical diagnostic manual .
PS another...
Welcome Marc.
Hope you enjoy your ride here.
Only as a suggestion, create a signature
line for your bike, year, model, and all the
code letters.
You can add that bike photo to the signature too.
Followed a lot of these BCM problems and used some of my services manuals to troubleshoot them. It goes page after pages of drop downs.
Just my opinion but you sure need you a good OEM service manual and the electrical diagnostic manual .
PS another...
Welcome Marc.
Hope you enjoy your ride here.
Only as a suggestion, create a signature
line for your bike, year, model, and all the
code letters.
You can add that bike photo to the signature too.
Last edited by Jackie Paper; Aug 19, 2023 at 04:57 AM.
Seasoned HDF Member
Joined: Sep 2017
Posts: 12,255
Likes: 4,947
From: England
At this point I think you need to stop fretting about a BCM fault and do some actual diagnostics. It might be faulty but it is expensive!
B2272 BCM/IM voltage high
You need to check the charging system first. It shouldn't be above 15 volts but in reality it ought to be around 14.4 to 14.8 volts. It needs to measured accurately as 1/10ths makes a difference.
If you can find one get the electrical diagnostic manual as that describes how all the electrics can be tested.
B2272 BCM/IM voltage high
You need to check the charging system first. It shouldn't be above 15 volts but in reality it ought to be around 14.4 to 14.8 volts. It needs to measured accurately as 1/10ths makes a difference.
If you can find one get the electrical diagnostic manual as that describes how all the electrics can be tested.
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,593
Likes: 6,435
From: Honah Lee
At this point I think you need to stop fretting about a BCM fault and do some actual diagnostics. It might be faulty but it is expensive!
B2272 BCM/IM voltage high
You need to check the charging system first. It shouldn't be above 15 volts but in reality it ought to be around 14.4 to 14.8 volts. It needs to measured accurately as 1/10ths makes a difference.
If you can find one get the electrical diagnostic manual as that describes how all the electrics can be tested.
B2272 BCM/IM voltage high
You need to check the charging system first. It shouldn't be above 15 volts but in reality it ought to be around 14.4 to 14.8 volts. It needs to measured accurately as 1/10ths makes a difference.
If you can find one get the electrical diagnostic manual as that describes how all the electrics can be tested.
Then the voltage regulator depending on battery condition and charge on it determines what you see as to a voltage range of 13.6 to 14.9. at 2000 rpm.
Of course, lights and such are on.
Is that wrong in general or just wrong for these new BCM bikes?
Last edited by Jackie Paper; Aug 19, 2023 at 04:40 AM.
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Seasoned HDF Member
Joined: Sep 2017
Posts: 12,255
Likes: 4,947
From: England
Not an expert either and in the past I would have gone with 14.4 volts being the correct charging voltage for a battery. Any higher continuously on a fully charged battery is liable to boil the electrolyte away, which is probably the main reason for the demise of most sealed maintenanceless batteries.
HD though seem quite happy if the charging circuit goes higher so that is all I can say from reading the electrical troubleshooting manual.
I would expect the BCM to be capable of handling higher voltages for self preservation with over voltage cut-offs for absolute protection on its inputs. I know it must have current limiting capabilities as it can report short circuits on most circuits and also fuses have been done away with.
HD though seem quite happy if the charging circuit goes higher so that is all I can say from reading the electrical troubleshooting manual.
I would expect the BCM to be capable of handling higher voltages for self preservation with over voltage cut-offs for absolute protection on its inputs. I know it must have current limiting capabilities as it can report short circuits on most circuits and also fuses have been done away with.
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Seasoned HDF Member
Joined: Mar 2010
Posts: 38,593
Likes: 6,435
From: Honah Lee
Marc, I would remove the battery and have it checked. Needs a good full maintenance charge on it first before checking. It could have been damaged in fall. How old is it?
Then you will have a good connection and a known battery condition for sure.
Cear code and see if it comes back.
Then you will have a good connection and a known battery condition for sure.
Cear code and see if it comes back.
Last edited by Jackie Paper; Aug 19, 2023 at 05:16 AM.
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,158
Likes: 11,249
From: San Diego, CA
I agree with the above....
Any electrical issue, I first check for good 12V power. Load test the battery, check all battery cables to include the ground. If it all checks OK, then clear the code and see if it returns.
If it returns, check the BCM connector for dirty, corroded, or bent pins.... then go from there...
Any electrical issue, I first check for good 12V power. Load test the battery, check all battery cables to include the ground. If it all checks OK, then clear the code and see if it returns.
If it returns, check the BCM connector for dirty, corroded, or bent pins.... then go from there...