We were daunted, but in despair we gave it a try and connected the new block to our dead DR. We were really relieved that we didn’t throw money down the drain! The source coil produces the power. Access the wiring for your ignition coils by opening the housing. In the case of the H2 for example, this will be the Green and white from the mag coils, and the three whites from the magneto. See? You will need to check between the primary terminals with the meter leads. Ignition coils take energy from the battery (usually 12 volts) and convert it to a high enough voltage (50,000 volts or more) to create a spark. Consider repair costs as well, including the per-hour shop rate at your mechanic's. Anyway, as always, we have a video for you from this test party, If you continue to use this site we will assume that you are happy with it. Let’s check it wire by wire: The 8th, 9th, 10th, 11th, 12th and 13th connection from this list has to work properly if we want to ride our poor DR. Psst… In order to make finding wires easier, here’s a little cheat sheet – mapping of wires to sockets: 4-pin square socket: connections 1-2-3-4, 3-pin single-row socket: 5-6-7, 4-pin square socket: 8-9-12-13, single pins: 10, 11. This power passes through a capacitor and is transferred to an ignition coil that helps boost the power by acting as a transformer and allowing the energy pass through it instead of catching any of it. Easy. Check the red wire on the stator. Alternative CDI Test An alternative CDI test is offered here. As you can see those are lots of connections! :/ However, fortunately, we can filter out some. After that we search for the 6th wire on our list above. - Inadvertently swapped coil/pickup wires between cylinders can cause difficulty starting and/or misfiring. How Ignition System in Vehicles Work. Turn the reading dial on the multimeter to ohms to measure resistance of the primary pickup coil. Then, equally, we pin up the negative probe to the cable of color listed in the first cell of the table row. Secondary Coil: Check for 7 ~ 9 ohms of resistance. If your plug wires and caps check out, you can now test your ignition coil. First measure the resistance between the primary wire that comes from the CDI box and the ground or ground wire. Switch on the ignition. (The Greek letter omega denotes ohms.) So we had a reason to think the CDI is broken and so we bought a new one from France for about 80$ (130$ with delivery :/). Test 1 - No Spark - Check to operation of the ignition and kill switches Check the kill switch, ignition switch and the associated wiring by carrying out continuity (resistance) checks on the loom 3 way plug. Therefore first we connect our multimeter probe to the battery ground terminal. All other wires should be left in place. However we are lucky as dear Mr Suzuki included a quite easy to get around table, where all the test we have to make and their expected results are listed. It does this when a small magnet on the flywheel passes the trigger. If your plug wires and caps check out, you can now test your ignition coil. An ignition coil is a kind of high-voltage transformer. The equipment involved is often out of reach of the typical home outboarder. Firstly we just pin-up the multimeter positive probe to the wire of color listed in the given column header. As with most types of vehicular maintenance, you'll want to begin the test with the vehicle in park and with the engine off. If your plug wires and caps check out, you can now test your ignition coil. In the case of the H2 for example, this will be the Green and white from the mag coils, and the three whites from the magneto. I changed out the ignition coil, I did an ohm test on the pick up coil and it is within specs according to the clymer manual. Notes: - A defective regulator/rectifier (open) can cause misfire/rev limiting. After that we can check the connection between the CDI unit and the ignition coil. This isn’t exactly definitive, as we have seen working coils with 0.0ohms resistance. Finally to check the proper resistance value we read the intersection of the given column and row. It should read in the thousands for Ohms. That coil is the one that generates a small amount of electricity that is sent to the CDI box to tell the ignition coil to fire. You cannot test the CDI. Sometimes, a bad CDI does not cause sparks at all. That coil is the one that generates a small amount of electricity that is sent to the CDI box to tell the ignition coil to fire. Click to see full answer Thereof, how do I know if my CDI box is bad? Sure, in the manual it is mentioned that the test should be carried with a special Suzuki multimeter, but seriously we don’t know now why the multimeter from Suzuki should make any difference in comparison to the standard multimeter in case of an ordinary resistance measurement? Ignition Coil -- The function of the ignition coil is to step up the voltage of the discharged current from the CDI, and send it to the spark plug. The proper method to check an ignition coil is using an oscilloscope, but an ohm meter works well, too. However you should get a service manual for the bike, in there it will tell you the proper specs for testing those coils. Will a motorcycle start with a bad Rectifier? Why are shadow boxes called shadow boxes? (it feeds the CDI) Set meter to AC and crank engine...should get 60+ volts...although I have seen them put out as low as 30 and still run. CDI ignition: Due to its ability to start a motorcycle without a battery most of the dirt bikes uses this ignition. 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