First measure the resistance between the primary wire that comes from the CDI box and the ground or ground wire. The resistance should measure around . 5 to 1.5 Ohms. If that checks out, you can then measure the resistance between the secondary wire (plug wire), w hich should measure in the thousands.
How do you check a motorcycle wire with a multimeter?
To test it, connect one meter lead to the red wire and the other to either the green or yellow wire, depending on which switch position you want to check. Below is a switch connection diagram for this switch that I’ve drawn for reference. So that’s it. You should be able to test most of the switches on your bike.
How do you diagnose electrical problems on a motorcycle?
Touch the positive lead of the multimeter to the positive diode on the rectifier/regulator. Next, test all the stator inputs on rectifier/regulator with the negative multimeter lead. Ensure that the meter isn’t reading while you test the positive diode, basically you should get no reaction on the multimeter.
What are the signs of a bad stator?
The most obvious symptoms of a bad motorcycle stator include no spark, weak spark, or intermittent spark (also known as misfiring). Hard starts and a poorly running engine can also be clues that your stator needs to be rebuilt or replaced.
How do you test a wire to see if it is broken?
To test, connect the multimeter to each of the wire’s ends. As before if a full circuit is made and there are no problems, when connected the multimeter should show a low reading. If the reading is showing ‘I’ it means, there is a break.
How do you test if a wire is bad?
Inspect the plastic insulation on the outside of the wire. Look for black spots (if the wire insulation is not black), melted spots in the insulation or cracks in the insulation. If you locate any of these things, the wire is defective.
How do I know if my electrical wire is damaged?
Place the black end of the multimeter into the round ground port of the device. Place the red in the smaller of the two slotted ports on the device. Make sure the leads are connected to metal in order for the multimeter to work properly. If the resistance is zero, you’ve found the break.
What causes no spark on a motorcycle?
If the spark is weak or orange, it is probably your coil not generating enough voltage. Test for spark by touching the spark plug to the engine and pushing the starter. While you’re at it, make sure the spark plug hole is not full of water. That is sure to cause spark problems.
How do I know if my motorcycle fuse is blown?
If a fuse is blown, you need to replace the fuse of the same rating. To check whether the fuse is blown or not, all you need to do is see the metal strip inside the fuse. The U-shaped metal strip will be broken if the fuse is blown.