| View previous topic :: View next topic |
| Author |
Message |
Sonu
Flying Brick Rider
Joined: 15 Jan 2004
Posts: 400
Location: San Jose, CA
|
 Posted: Sat Aug 15, 2009 7:04 pm Post subject: Diagnostic and fix for brake switch/brake light always ON |
 |
|
Friends,
My rear brake light would intermittently turn on by itself. I fixed the problem and just finished replacing front brake micro-switch. Thought I'd write up my notes in case it helps someone else.
DIAGNOSTIC PROCEDURE TO SEE WHICH BRAKE SWITCH IS THE PROBLEM
1) Bike on center stand in neutral
2) Turn on Power. BMU light should come ON. Brake light should be OFF.
3) Stomp on rear brake and let go. Brake light should come ON then go OFF.
4) Depress front brake & hold. BMU should go OFF. Brake light should stay ON.
5) Let go front brake. Brake light should go OFF.
PROBLEM I HAD
At step 2) in above procedure the BMU was ON and brake light was ON.
At step 3) BMU went OFF. Conclusion front brake switch is open.
TEMPORARY FIX
Thoroughly cleaned switch (accumulated dust & grime). Tried WD40. Took needle nose pliers and manually depressed plastic switch a few times. This fixed the problem but it would keep coming back.
PERMANENT FIX (Replace front micro switch procedure)
Buy the correct BMW part shown
1) Took off left and right fiberglass panels
2) Removed two circlips holding the (Corbin) seat to release tank
3) Lift gas tank up and back & hold in place with bungee or tie wrap. The silver foil you see in the pic is my Johnny Blanket for heat control. Search this site if you're interested in it.
4) Locate connector plug on left side of bike. Picture shows my thumb on the OLD switch connector (after I undid it) and index finger on NEW switch connector
5) Repeat diagnostic procedure listed above as a sanity check that new switch fixes the problem (manually operate the switch)
6) Remove plastic cover at the front brake lever
7) Note how wiring is routed from the switch & then remove the two screws holding switch in place with a jewelers flat head.
#8 Install new switch and repeat diagnostic
9) Install tie wraps as needed & replace tank and body parts in reverse order of removal
10) All done! The LED lights seen are Hyperlights I added a while back. Very easy install with customized instructions for K1100 bikes. No wire splicing required.
Sanjiv
_________________
1997 K1100LT "Ziggy" _GarminGPS_Corbin saddle_K Guards _Hyperlights_Fog lights_Eastern Beaver Relays_Cee Bailey_4"speakers_Michelin PR4's_MoS2_Spiegler lines_TPMS_VDO
 |
|
| Back to top |
|
 |
owrstrich
Flying Brick Rider
Joined: 29 Oct 2006
Posts: 2566
Location: CheezConsin
|
| Posted: Sat Aug 15, 2009 9:38 pm Post subject: |
|
|
rodger that sonu... excellent write up...
hope you are not getting smoked out down there...
nice touch... the leds on the turn signals... are those hyperlites...
we are gonna be in fremont next weekend... f y i...
j o
_________________
yeeeeeehaaaaaaa... |
|
| Back to top |
|
|
Sonu
Flying Brick Rider
Joined: 15 Jan 2004
Posts: 400
Location: San Jose, CA
|
| Posted: Sun Aug 16, 2009 1:51 am Post subject: |
|
|
Hi Johnny,
Yes those are Hyperlites. Expensive but my butt is worth more 
If you're in town next weekend lets ride up Mt Hamilton following the route you had put together earlier. Tried to send you a PM but mail is stuck in "outbox". So here's the proposal...
Breakfast at 9am? Sat Aug 22nd.
Evergreen Inn & Pub
(408) 238-8846
3273 S White Rd, San Jose, CA 95148
Sanjiv
_________________
1997 K1100LT "Ziggy" _GarminGPS_Corbin saddle_K Guards _Hyperlights_Fog lights_Eastern Beaver Relays_Cee Bailey_4"speakers_Michelin PR4's_MoS2_Spiegler lines_TPMS_VDO
Last edited by Sonu on Sun Aug 16, 2009 3:36 pm; edited 1 time in total |
|
| Back to top |
|
|
Scott_Anderson
Site Admin
Joined: 05 Sep 2006
Posts: 3122
Location: Central Iowa, USA
|
| Posted: Sun Aug 16, 2009 6:50 am Post subject: |
|
|
| Sonu wrote: | | Tried to send you a PM but mail is stuck in "outbox". |
P.M.'s will stay in your out box until the recipient logs on to receive it.
Just so you know.
It's also a good way to know when it is read.
_________________
Ride safe.
1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold) |
|
| Back to top |
|
|
owrstrich
Flying Brick Rider
Joined: 29 Oct 2006
Posts: 2566
Location: CheezConsin
|
| Posted: Sun Aug 16, 2009 10:43 am Post subject: |
|
|
im not riding with any l t motobricks anymore... for many reasons... but most importantly... all you l t riders are o c d... its freaking disturbing...
j o
_________________
yeeeeeehaaaaaaa... |
|
| Back to top |
|
|
Mystic Red
Flying Brick Rider
Joined: 28 Mar 2005
Posts: 2330
Location: Twin Lakes Idaho
|
| Posted: Sun Aug 16, 2009 1:50 pm Post subject: |
|
|
| Quote: |
im not riding with any l t motobricks anymore... |
Even if I promise to carry a roll of duct tape and some extra bungee cords to strap all your loose plastic bits back on. By the way, I did a Google search on "bungee cord head light mounts" and got no hits. 
_________________
Scott Hespelt, '94 K11LT
K11 OG #466 |
|
| Back to top |
|
|
Sonu
Flying Brick Rider
Joined: 15 Jan 2004
Posts: 400
Location: San Jose, CA
|
| Posted: Sun Aug 16, 2009 3:17 pm Post subject: |
|
|
| Scott_Anderson wrote: |
P.M.'s will stay in your out box until the recipient logs on to receive it.
|
That explains a whole lot. Thanks Scott!
No longer clueless Sanjiv...
_________________
1997 K1100LT "Ziggy" _GarminGPS_Corbin saddle_K Guards _Hyperlights_Fog lights_Eastern Beaver Relays_Cee Bailey_4"speakers_Michelin PR4's_MoS2_Spiegler lines_TPMS_VDO
|
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
