Throttle Voltage Test; Intermitted Power Loss - X-TREME XB-610 Owner's Manual

analog resistance meter of any kind, as it could damage the chip if it's a Hall-effect chip), you can
test whether it's a potentiometer or not. If it is, you should get 5K ohms across red and black, and of
course, 0-5K from red or black to the third wire (usually green or yellow). If it isn't, you'll get
readings in the megohms in one direction and no connection in the other in some cases.
A better test if you have a digital VOM, is to push the probes into the back of the throttle
connector at the controller while it is connected. Turn the scooter on, and operate the throttle. You
should get near zero to near 4 or 5 volts between the black and third wire (green or yellow). These
voltages work for most scooters, but not all. Some throttles use 0-24 volts, and some use a
negative voltage (the throttle 'sinks' current).
You should also check the brake inhibit switch (there should be a wire cable coming from your
brake handle), to see if it is making and breaking continuity. The brake inhibit switch turns the
throttle off when you put the brakes on. It functions like a 'kill switch' should anything go wrong.
You should also test the key switch in the same way.
You can test the motor by jumping from the batteries to the motor, but be aware that it will make a
large spark, or you can test the voltage at the motor connector while turning the rear wheel
backwards. The motor should generate a small negative voltage that varies with the speed it is
turning.
A smell test is also conclusive proof that you have a damaged controller or motor. If you can get
your nose close to one or the other and it smells like badly burnt broccoli, it's burnt out. Of course it
could also be burnt out and not smell, but if it smells it's burnt out.
Troubleshooting: Throttle Voltage Test
Follow throttle wires until you find its white connector. You will be testing the "Red", "Green",
and "Black" wires. Set your meter to test DC volts. Block rear wheel off the ground so scooter
will not take off. Turn the scooter on. Place the red meter test lead on the "Red" wire and the black
meter lead on the "Black" wire. The meter should measure +5 volts. Now place the meter red lead
on the "Green" wire. With out turning the throttle you should read around +0.8 volts. Now turn the
throttle wide open. You should now read around +4 volts. If everything else powers up on the
scooter and you do not have +5 volts between the "Red" and "Black" wire the controller is bad. If
you did not get the +.8 to +4 volts then the throttle is bad.
Troubleshooting: Intermitted Power Loss
While doing each of the steps you are to go and test drive the scooter to make it cutout like it was
doing. You will need a voltmeter for electrical readings and will also require a power cord that is
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