X-TREME Scooter XB-504 Owner's Manual - page 29
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1.
Place the red meter lead on the red sensor wire.
(7-20meg ohms)
2.
Place the red meter lead on the yellow sensor wire.
(Infinite)
3. Place the red meter lead on the green sensor wire.
(Infinite)
4. Place the red meter lead on the blue sensor wire.
(Infinite)
Place the red meter lead on the black sensor lead for the next three tests.
5. Place the black meter lead on the yellow sensor wire. (Around 4 meg.)
6. Place the black meter lead on the green sensor wire.
(Around 4 meg.)
7. Place the black meter lead on the blue sensor wire.
(Around 4 meg.)
Test all sensor leads from lead to lead. All readings should be infinite.
Use a digital voltmeter set to read DC volts for these test. Motor wires must be connected to the
controller for these tests. Moped’s power switch must be on during this test.
1.
Test between the red and black sensor leads.
(5 volts)
If you do not have +5 volts check the sensor connector. Make sure it is pushed together all
the way. Check for broken or shorted wiring. The controller may have failed.
2. Place the negative lead of the meter into the sensor connector where the black wire is located.
Place the positive meter lead into the sensor connector where the green wire is located. Slow
rotate the tire. The meter should alternate between 5 volts and 0 volts if the sensor is good.
Test the other two sensor wires the same way. If the voltage reads 0 or 5 volts and does not
change check the sensor connector again. Causes for this may be a broken wire, or the Hall
Effect sensor may have failed. If all three sensor’s read 5 volts with no change the ground
wire may be broken. If all three sensor’s read 0volts with no change the positive wire may be
broken.
Motor Winding Test:
Test all motor leads from lead to lead. All readings should be .6-.7 ohms.
Controller Test:
Disconnect all the motor wires from the controller to run these test. Set the volt-meter to read
ohms. If your meter does not auto-range set meter to 20K ohms. Check between the red and black
power wires. Meter should not show low resistance. Meters that will auto-range will go up to
around 4 meg. after the capacitor has charged. Place the negative lead of the voltmeter on the
black controller wire that would go to the battery negative. Place the red lead on one of the
controller’s leads going to the motor. Controller motor leads will be the yellow, blue, and green
leads that are not in the white connector. You should get close readings as you switch between the
leads Place the red lead of the voltmeter on the red lead of the controller wire that would go to the
battery positive. Place the black meter lead on one of the controller’s leads going to the motor. You
should get close readings as you switch between the leads. If you get a lot of difference between
readings of the motor leads the controller is be bad.