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2014 forty eight cranking when hooking up new battery

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  #21  
Old 05-29-2020, 08:51 PM
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If this is the correct fish , then you do ... not sure where it might be located though .

https://partsfinder.onlinemicrofiche...UIT%20BREAKERS
 
  #22  
Old 05-30-2020, 08:56 AM
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The starter solenoid is controlled by the Body Control Module.
 
  #23  
Old 05-30-2020, 09:23 AM
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So I checked the voltage at the connector it’s at 12.8, followed it to bcm unplugged the harness and checked the pin 128b connects to in the bcm and it’s throwing power, does this mean I have a bad bcm?
 
  #24  
Old 05-30-2020, 09:53 AM
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This is computer stuff that I can`t answer. I don`t know if the body control module can be reset or updated...But for some reason it is powering this circuit when it shouldn`t.
 
  #25  
Old 05-30-2020, 05:40 PM
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I don't know much , if anything about the bcm , but from what I have read , if power from the ignition switch or start button is going to the bcm , it will send voltage to the starter , which may be the reason why you have power to the solenoid when it shouldn't . I would check your connections at the ignition switch as well as the start button and the wiring leading back to the bcm , could be a short in the wiring or corrosion inside the button itself . A break in the wiring harness at the steering head or somewhere along the handle bar .
 
  #26  
Old 05-31-2020, 09:07 AM
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Read the thread.

Just a thought...is the handlebar starter button stuck?

Before the battery change, any other work done to the bike?
 
  #27  
Old 05-31-2020, 11:19 AM
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Originally Posted by Kenny94945
Read the thread.

Just a thought...is the handlebar starter button stuck?

Before the battery change, any other work done to the bike?
Think about this....

If the starter switch (button) were stuck, the ignition switch would still need to be on, and the kill switch would need to be on.

The starter cranks when ignition switch and kill switch are turned off.....
 

Last edited by Dan89FLSTC; 05-31-2020 at 11:20 AM.
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  #28  
Old 05-31-2020, 12:11 PM
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Dan , that makes perfect sense to me . Makes me wonder if the bcm is actually faulty . From what I have read so far , the bcm has a built in starter relay , which seems to be receiving power constantly . Trying to find out if the power going to the bcm is constant or only when the ignition is turned on ..
 
  #29  
Old 05-31-2020, 03:43 PM
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I think it’s time for a new bcm unplugged the harness but left the power plug into the bcm and the L2 where the solenoid power cable is was at 12.8v so I’m thinking it’s a bad bcm considering the harness was out so nothing could have been sending a signal to make that hot besides the actual unit itself
 
  #30  
Old 05-31-2020, 05:59 PM
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Well , I'm rooting for you . Your issue really did peak my interest and I learned a bit about it as well , not an issue that comes up very often .

If it ends up being the ecm , I would tear into that old one and see if there are any signs of malfunction . The bcm is supose to have a built in relay to the starter , so maybe it's corroded or stuck in the " power mode " .. There was an issue with the earlier one's that got wet and caused a similar problem as yours .

Hope that's what gets you back on the road !
 


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