HarleyTechTalk

Hi,I have a 2010 FLHX.The ABS light stays on (does'nt flash) and I have a U1040 code stored.I purchased the shop manual on line and can't find a code chart in it.I known a U code is a network code.Does any one know what manual I need to purchase to get a 2010 code chart? Thanks Alex.

i believe you need the electrical manual

my 04 manual doesn't show a u1040. might be for newer modlesor different from my dyna

You have a tax problem...................

DTC U1040 indicates that the ABS module is not capable
of sending its state of health message. ( and this makes the ABS Light not flash ) check connections on the Module ...all fuses ...

Possable causes :
Open ABS fuse
Open battery circuit
Open ground circuit
Open serial data circuit
Short to ground in power circuit
ECU malfunction

I found a code chart at another web site.U1040 indicates no serial data communication with ABS module.I checked for wake up signal,it was there.I checked ground connection,it was good.I checked for B+ at module with DVOM and had battery voltage at both pins.I then load tested both B+ terminals and found the circuit was faulty.I went to the 30 amp ABS fuse and did a voltage drop test .I found the female connectors that the fuse plugged in to did not make good connection with the fuse.I bent the fuse pins outward and reinstalled.The ABS module came back on line.This bike has less than 2500 miles on it and this connection is already faulty.Is there a way to look up TSB'S for harley?.Bending the fuse pins is only a temperary fix.If there is no TSB for this problem I'm going to wire in a ATO fuse instead of the mini that Harley uses.The ABS motor draw on every start up appears to be excessive for that mini fuse connector.Thanks for the replies,Alex.

Quote from: apex on October 10, 2010, 08:02:23 PM
I found a code chart at another web site.U1040 indicates no serial data communication with ABS module.I checked for wake up signal,it was there.I checked ground connection,it was good.I checked for B+ at module with DVOM and had battery voltage at both pins.I then load tested both B+ terminals and found the circuit was faulty.I went to the 30 amp ABS fuse and did a voltage drop test .I found the female connectors that the fuse plugged in to did not make good connection with the fuse.I bent the fuse pins outward and reinstalled.The ABS module came back on line.This bike has less than 2500 miles on it and this connection is already faulty.Is there a way to look up TSB'S for harley?.Bending the fuse pins is only a temperary fix.If there is no TSB for this problem I'm going to wire in a ATO fuse instead of the mini that Harley uses.The ABS motor draw on every start up appears to be excessive for that mini fuse connector.Thanks for the replies,Alex.

There is no TSB on the issue

Isn't a 2010 still under warranty ? Why mess with it.

If its under warrenty they should just replace it... no questions