05-09-2020, 08:29 AM
(05-09-2020, 08:10 AM)Lord Popgun_imp Wrote: Here is the speed sensor output. https://youtu.be/JLJi-v2Ju5A
The signal rides on a ~10v level. Notice the trace is 10v from the scope center (scope 5v per cm)
Test setup: I disconnected the sensor connector from the harness and connected jumpers to the harness male pins. Then I used .028” safety wire inserted into the sensor female pins and clipped the jumpers to the safety wire. Now the speed sensor is connected to the bike again and I had a place to connect the o-scope leads (to the safety wires).
Scope: the probe was connected to the VSP+ wire. The probe ground was connected to the VSP- wire. Connecting the probe ground to chassis ground does not work. All you get is a sawtooth wave train that stays constant amplitude and frequency. Max has a theory on that.
Upon ignition turn on the trace goes from 0v to ~10v and stays there until I put the bike in gear (on the center stand). When it clunked into gear you can see a period pulses as it jerked the wheel I guess. Then I let the clutch out and the bike idles at 10MPH. You see the pulse train. Then ran the throttle up. Then took it out of gear and turned it off. You can see the pulse train is gone and the trace is at ~8v vice the 10 at start.
TLDR: started the bike, put it in gear and ran it up.
I forgot to publish it. Wait until 6:30pm. About 10-15 minutes and it should be good.
You need to change the video from private, or only you can watch it.