Join Date: May 2004
Location: Hazel Green, AL, USA
Re: My Father purchased 2002 K1200LT with 7000 miles the abs pump stays on all the time
There is no ABS relay and it sounds like it has a bad ABS unit. Two things trigger the pumps. 1. brake switches -lever and pedal. 2. pressure. What we need to do is isolate the switches since they will prevent the unit from completeing its self test when the key is turned on.
The bike will not complete the self test if brakes are held during the initial key on period. If one of the switches is stuck it will remain in the fast flash mode until switch is released.
Check each switch with the bike turned off and in a quiet location. You should be able to hear a distinc click as the lever is slowly pulled in. If you are getting that click then that switch is most likely OK. Next look at the brake pedal and what looks like an adjusting nut. There is a paddle just above the head of that bolt. As you depress the pedal that paddel drops and you should hear a distinc click.
Once you get those in order try the key on again with no brakes applied and see if it complets the rapid flash selft test and switches to the slow flash. The slow flash means half the test is done and the second part is completed after a short rolling distance to check ABS wheel sensors. If all is well the flashing will stop.
Also it bothers me that the servos run even with the key off. That almost sounds like an early ABS II unit failure mode. Just to make sure what letters are on the front calipers, BMW or Brembo?
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT
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Last edited by jzeiler; Apr 30th, 2012 at 7:23 pm.