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06 no cranking, fuel pump on, DTCs

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Old May 2, 2024 | 11:49 PM
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Default 06 no cranking, fuel pump on, DTCs

Hi all!

I have a HD FLSTN softail deluxe 06 which I was trying to start with a weak battery.
I hook the bike battery to a running car battery and tried cranking like that. All of a sudden the bike doesnt want to crack anymore.

Got the security system indicator light solid red for more than 4 seconds, so I knew I got some DTCs (bike doesnt crank, but I hear fuel pump cycling) - 4k miles
The trouble codes I have are:
P: None, Pn 32919-06
S: No rSP
SP: U1255, End, Pn 67439-05
T: No rSP

Any idea how to diagnose further?
 
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Old May 3, 2024 | 03:50 AM
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check the starter relay. Check voltages to it and let us know
 
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Old May 3, 2024 | 05:13 AM
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In the future, shut the car off when jumping a bike that has a computer in it.
 
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Old May 3, 2024 | 06:41 AM
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I've never been able to jump without a running car and revved up. It is only producing 14.4 volts like bike. I have wondered with the new ones that drop down to 9 volts when charged what they run at.

But lets look at this way, it would start, you tried jumping and it would start still. Put it on a charger, check voltage. You may simply need a new battery too.

I wouldn't do anything until I charged the battery overnight, and checking with a meter would be good too.

Think about this. You said weak battery. Charge it .Before anything.
 
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Old May 3, 2024 | 07:03 AM
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Before you start troubleshooting:

Make sure you have a fully charged battery that has passed a load test and clean all cable connections.

How old is the battery?
 

Last edited by Dan89FLSTC; May 3, 2024 at 07:07 AM.
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Old May 3, 2024 | 07:14 AM
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Never ever jump a motorcycle from a car with the car running. It's not the running voltage that's gonna damage things it's the output amperage of the cars altenator. Usually ends up damaging the stator and regulator. I've seen melted wire harness too. So yeah you could have blown the computer also
 
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Old May 3, 2024 | 07:39 AM
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U1255 is a serial data error. If the speedo is reporting that then it maybe the ECM is not getting the correct response from the TSM/TSSM.
 
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Old May 3, 2024 | 10:32 AM
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Originally Posted by Torkmizer
Never ever jump a motorcycle from a car with the car running. It's not the running voltage that's gonna damage things it's the output amperage of the cars altenator. Usually ends up damaging the stator and regulator. I've seen melted wire harness too. So yeah you could have blown the computer also
with this logic to big of battery could be bad. I order to have high amps, something must draw high amps.

I prefer jump packs these days, short clean connections. I have never been Able to jump anything without revving up engine . Need to raise the voltage.

First thing he needs to charged or new battery,then see what is wrong.

You can get codes for low voltage
 
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Old May 3, 2024 | 10:37 AM
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Originally Posted by Torkmizer
Never ever jump a motorcycle from a car with the car running. It's not the running voltage that's gonna damage things it's the output amperage of the cars altenator. Usually ends up damaging the stator and regulator. I've seen melted wire harness too. So yeah you could have blown the computer also
I have tried to explain this once before but it is hard to visualise as a problem.

The voltage from the car can be higher than the voltage the regulator can work with. It is that the regulator is being back powered. The positive voltage is flowing into the regulator. If there isn't sufficient protection against this it can damage the components.
 
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Old May 3, 2024 | 11:59 AM
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Car runs around 14 volts too
 
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