How do you check the resistance on an ignition coil?
Connect your multimeter to the positive terminal or pin of your coil, and to the high output terminal that goes to the spark plug. Most ignition coils should have a secondary resistance falling somewhere between 6,000 to 10,000 ohms;however, refer to manufacturer specifications for the correct range.
What is the primary resistance of a Honda ignition coil?
So I measured the primary resistance between the coil (+) & (-) terminals and got 0.22 ohms, which I think is too low. Checking the secondary resistance between the coil tower (including the spark plug wire because it’s all one piece) and the (+) terminal I got 10 K ohms, which I think is okay.
What should I do if my Honda CT90 ignition coil is bad?
Its easy to test the old coil if you have a test light with battery, or a multimeter. Appears your spark color followed battery Voltage as it fell too low to produce a good spark. The CT90 requires a fresh, fully-charged battery. A 1/2 Amp motocycle 6 Volt battery charger is a must have.
Can a motorcycle ignition coil be tested without a battery?
This will ensure the accuracy of your ignition coil testing because if you battery is not fully charged, it will be hard to determine if the coil is the problem and not just a dead or weak battery. Access the wiring for your ignition coils by opening the housing.
How are the circuits in an ignition coil tested?
There are two circuits in every ignition coil, and there are also two testing methods. One is a static simple resistance test; the other is a dynamic function test. Testing is essentially the same no matter what type of vehicle the ignition coil comes from. Remove the coil from the vehicle.
How is the resistance of a Honda ignition coil measured?
It states, “Another method is to measure the resistance of the ignition coil and the flywheel A.C. generator primary coil. (Fig. 107)” That sounds to me like Honda is calling the stator coil the primary, and the wording in the primary coil measurement sounds like they are referring to the stator coil.
What should the resistance be on a stator coil?
I would bet that the 2.1 to 2.3 ohm value is for the stator coil, the 9-11 ohm readiing is for the primary side of the ignition coil, as shown in Fig. 107, and the secondary side of the coil should be a very high resistance, but not an open circuit.
Where is the third coil on a Honda?
The third coil in little Hondas is the one in the stator, which energizes the primary side of the ignition coil when the points are closed. Ignoring Honda manuals for the moment, if you dig through automotive manuals, they will refer to the “primary” and “secondary” both in reference to the ignition coil.
Is the Honda ignition coil energized by battery?
Ignoring Honda manuals for the moment, if you dig through automotive manuals, they will refer to the “primary” and “secondary” both in reference to the ignition coil. They have no stator coil, . . . the coil is energized by the battery. Now here’s where the problem comes in.