General Category > ABS related issues

No response from controller r1200cl 2004

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schuppi:
That's best.
Because it is the diagnostic wire without connection to battery

mayojuaf:
Guys, I am back. I bought the oscilloscope. Where should I connect the black and red alligators to measure signal from sensor?

Can I do it directly without connecting the sensor to the IABS? just turn the wheel, and at the end of the sensor connector plug the osciloscope?

Thanks again for your help!

WayneC:
You have a learning curve in front of you to learn how to use a DSO/CRO, the red lead of the probes is the active and the black is the earth

Use the inbuilt oscillator to learn how to change the display and settings for different signals.  Connect one proble to the LHS and the other to the right then connect red to red black to black and you should see the inbuilt test signal on screen, if not then you change the settings until you see the signal

mayojuaf:
ok, is like going back to college :)  I did not have these courses...
Thank you so much for your patience....

Ok is this picture representative of what you were telling me?

WayneC:
Yes, now you need to learn to change the time base so you can display different frequencies, ie making for either more or less pulses visible, you will also find you can move the signal up and down on the screen with the arrows you see on each side of the display, as well as the size of the signal displayed. In addition there is a setting to show the amplitude, frequency and other info of the signal on screen as well as record it for transfer to PC via USB

The wheel sensor will be a 0 to 1v signal of differing frequency dependent on how fast the wheel spins so learning the above will be important

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