Throttle position sensor Values 99-02

[RIKBRIANT]

Hi,
I have a AN 400 K1 with a Keihin 36 mm carb.
The factory Manual states that the TPS resistance readings should be...5 Ohm (page 4-19) BUT, ..... Says Approx 5K Ohm on page 4-15 . (this is for the Black and Blue cables)

For the Blue to Yellow reading it states .. 3.09 - 4.63 K Ohms at W.O.T. (full throttle).

My TPS reads 5k ohm at rest,.. but at full throttle it goes DOWN to 1.5 K ohm.

This is the second TPS Ive tried , and they both display the same resistance figures.

Has anyone else had this?
Does it Matter ?
what am I missing here.?

Thanks in advance.

RIk

[Dave Weller]

In 2003 did it have a TPS?
It is usually fed by a cable or two.

[RIKBRIANT]

Dave the K1 and K2 models have a TPS on the carb.

[roadster]

I would guess that the role of a position sensor on a carburettor is for fuel saving and/or acceleration enrichment perhaps also for ignition timing tweaks. So if the scooter is responsive and has no hesitation or misfiring its best left alone.

[RIKBRIANT]

roadster,
The TPS needs to be set in accordance with the manual....
My TPS , whilst ok for its baseline setting (5K Ohm), does weird shit that doesn't tie up with the manual specs.

I have 2 that do the same..