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10-26-2007, 01:54 PM
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#1 (permalink)
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Pog Mo Thoin
Join Date: Feb 2007
Location: Coming to a town near you
Posts: 147
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HOW TO: FOOL ECU FOR EXUP REMOVAL
I got sick of seeing and hearing my servo motor after I installed my slip-on, so I decided to do a little investigating. I took out my stock servo motor and took it apart. (pics will follow later). Lo and behold, there's nothing to it at all! Its a potentiometer and a small DC motor.
I read on the web that the R1 can either use a 7.5K Ohm resistor or a jumper wire between the outside wires and the bike will be fooled in all but the coasting / clutch pulled in position. This still causes erratic tach behavior, but keeps the CEL from coming on.
I checked the resistance in all ranges and across all three inputs on the R6 and found that the Ohms were different (around 10.2K outside, and between 4.8 - 5.7 both middle and outstide inputs. Duh, the outside is twice the inside amounts, I just wanted to confirm this)
Here's how I tricked the ECU into thinking Servo is still there.
1st attempt was to jumper the outside wires with a 10K Ohm resistor...no luck the CEL came on and I had to goto 62 in Diag and reset it.
2nd attempt was to jumper two 4.7K Ohms resistors between left and middle and right and middle...again no luck.
3rd time was the charm, 10K Ohms between the outsides, and two 4.7K Ohms between Left - Middle - Right and perfecto!!!
I went into Diag and ran line 53 to check servo, light flashed twice to test and no CEL!
I went into line 62 to check for errors , and NONE!
Bike rides / runs perfectly and I didn't spend $100 on some EXUP Servo eliminator or whatever!
**** I know this is alot of inside, outside, etc... I'll post picks later to explain better.
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10-26-2007, 02:49 PM
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#2 (permalink)
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Senior Member
Join Date: May 2004
Posts: 4,925
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Sounds like more work then just leaving that little box there.
Gj on bypassin it tho.
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10-26-2007, 08:01 PM
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#3 (permalink)
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Hi , How are ya
Join Date: May 2004
Location: Palm Springs, CA
Posts: 3,525
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Could you provide a wiring diagram or the pics? Im tired of hearing the damn motor also
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You All Laugh Because I Am Different, I Laugh Because You're All The Same.
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10-29-2007, 01:28 AM
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#4 (permalink)
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Hi , How are ya
Join Date: May 2004
Location: Palm Springs, CA
Posts: 3,525
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Any info yet???
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You All Laugh Because I Am Different, I Laugh Because You're All The Same.
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10-29-2007, 03:11 PM
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#5 (permalink)
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Junior Member
Join Date: Sep 2007
Posts: 7
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what does the servo motor actually do? whats its purpose?
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10-30-2007, 02:15 AM
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#6 (permalink)
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Hi , How are ya
Join Date: May 2004
Location: Palm Springs, CA
Posts: 3,525
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It controls thhe exup valve in the 06 and up exhaust system
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You All Laugh Because I Am Different, I Laugh Because You're All The Same.
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10-30-2007, 03:14 PM
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#7 (permalink)
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Venerial Spewage
Join Date: Feb 2006
Location: Home Depot, maybe Bed, Bath, and Beyond, if we have time.
Posts: 6,196
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Wurd, get the info up there. My servo motor has been wiggin out for a while now, (havent had the cables hooked up for a long time, and recently got a Leo Vince full exhaust.) But it's like defectively wiggin out, and it annoys the crap out of me and I wanna ditch the thing.
__________________
"I use my unit every time I ride." - GETONIT
"I remove my unit all the time after I ride." - L_R6_A
Come on Dad, I need you dood, we got things to do still.
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10-30-2007, 04:32 PM
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#8 (permalink)
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Hi , How are ya
Join Date: May 2004
Location: Palm Springs, CA
Posts: 3,525
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Ditto that^
__________________
You All Laugh Because I Am Different, I Laugh Because You're All The Same.
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10-30-2007, 04:38 PM
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#9 (permalink)
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Hi , How are ya
Join Date: May 2004
Location: Palm Springs, CA
Posts: 3,525
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Ditto that^
__________________
You All Laugh Because I Am Different, I Laugh Because You're All The Same.
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10-30-2007, 05:47 PM
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#10 (permalink)
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Senior Member
Join Date: May 2004
Posts: 4,925
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Ditto that^
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