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.
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.
