Any way to disable the "only start in Neutral" feature?

Started by XTR, June 23, 2008, 06:43:05 AM

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XTR

The wife has discovered that her new to her S4R will only start if the bike is in neutral.  That's about a pain in the butt if you happen to stall it at a light. 

How difficult is it to disable this "feature". 

And here I thought sport bikes and their kickstand interlocks were bad enough. 

(For those who don't know it Harleys start with the kickstand down and actually have self canceling signals that turn off after a given distance)
Between my wife and I:

'02 Speed Triple (Blue)
'02 FXDWG (Black, Chrome, Loud)
'91 F2 600 (red/white0
'04 S4R (Blue/white)

CDawg


XTR

Stock clutch with the gold hardware.  Why, is there a relay on the clutch that I can jumper?

Between my wife and I:

'02 Speed Triple (Blue)
'02 FXDWG (Black, Chrome, Loud)
'91 F2 600 (red/white0
'04 S4R (Blue/white)

Armor

You're wifes bike should start with the clutch pull in.  It should also start with the kickstand down - when in neutral.
04 M1000s, Arrows, Light Flywheel, Ohlins suspension

XTR

Right now it will only turn over if it is in Neutral with the clutch in.  If that is not standard then I'm really puzzled. 

It will run in N on the stand. 
Between my wife and I:

'02 Speed Triple (Blue)
'02 FXDWG (Black, Chrome, Loud)
'91 F2 600 (red/white0
'04 S4R (Blue/white)

CDawg

You may want to call a dealer up to check, but I'm pretty sure that Armor is correct.

There are at least 3 switches involved (kickstand kill switch, neutral sensing switch, and clutch-pulled-in switch).  If you run some combinations* (e.g., neutral, kick stand down, clutch engaged: start or not; 1st gear, kick stand down, clutch disengaged: start or not; neutral, kick stand down, clutch disengaged: start or not;etc...) that may help isolate the problematic circuit....If I had to take a WAG, I'd say the clutch micro-switch is malfunctioning so the ECU only fires the starter when the gear=neutral.

*I think there are 6 possible combinations for this exercise

XTR

I did a bit of diagnostic work (not much actually) and figured out that it will start  in N with the clutch out, and it will not start no matter the clutch position in any other gear.

It's a bad clutch interlock.
Between my wife and I:

'02 Speed Triple (Blue)
'02 FXDWG (Black, Chrome, Loud)
'91 F2 600 (red/white0
'04 S4R (Blue/white)

XTR

Just to follow up on this one.  I did some diagnostics last evening. I'm getting voltage up to the lever in the blue wire, but the black wire is dead, guessing it is the cold side of the circuit to show that the lever is in; however, jumpering across them does not make the bike think the clutch is in.

I'm guessing that the return wire is lose or broken somewhere.  I'm going to trace it shortly..
Between my wife and I:

'02 Speed Triple (Blue)
'02 FXDWG (Black, Chrome, Loud)
'91 F2 600 (red/white0
'04 S4R (Blue/white)

CDawg

The black is ground so if cannot find a break, you may be able to jerry-rig it to another ground. Another route would be to trace the microswitch back to the previous junction and bridge it there.

XTR

Does anyone know where the clutch relay leads back to on the bike?  I've run it back past the connector below the bars to the head tube, but there is goes into a large bundle and I really don't want to have to untangle the whole wiring harness to trace the wires.   [bang]  I''m still getting voltage up to that point in the hot side, but jumpering it still doesn't do anything for me.

The bike is due for the 12K maintenance shortly anyway.  I may give up just tell the Duc dealer to deal with it.

Between my wife and I:

'02 Speed Triple (Blue)
'02 FXDWG (Black, Chrome, Loud)
'91 F2 600 (red/white0
'04 S4R (Blue/white)