How do you test a Harley Davidson ignition system?
How to Test a Harley Davidson Ignition Coil
- Turn off the motorcycle. Allow the engine to become cool to the touch before proceeding.
- Disconnect, by hand, the two spark plug wires from the coil.
- Set the ohmmeter to read resistance on the “Rx1” setting.
- Set the ohmmeter to read resistance on the “Rx1000” setting.
How to read diagnostic trouble codes on Harley Davidson Softail?
For 2014 and later models, hold the odometer button down on the lift grip. Move the ignition switch to the ignition position. You’ll see the “DIAG” message displaying. Release the odometer button and press it again to read the different codes at each module.
Why is my Harley Davidson Softail not working?
These systems must stay properly powered by the battery. The wiring connecting the systems together must remain intact. These problems occur and, although difficult to find at times, a series of test will help you narrow down the cause. This article applies to the Harley Davidson Softail.
What to do if your ignition module fails?
You also need to check all the battery, hot and ground wire connections. The service manual has a diagnosis procedure for the ignition module. They tend to fail in a variety of ways though, some slowly, others all at once. Start with the simple stuff first. Get the battery load tested too.
How can you tell if a Harley Davidson ignition coil is bad?
Harleys’ that run on a single-coil engine will make cranking sound, but there will be no spark from the cylinders. If your bike stalls while working, this is another sign that indicates there’s something wrong with the ignition coil. When some irregular sparks are sent to plugs from the coil, the issue occurs.
For 2014 and later models, hold the odometer button down on the lift grip. Move the ignition switch to the ignition position. You’ll see the “DIAG” message displaying. Release the odometer button and press it again to read the different codes at each module.
What causes no start on Harley Davidson Softail?
A parasitic draw occurs when one or more circuit remains powered after the ignition is turned off. A draw on the battery of more than 0.02 amps can deplete the battery overnight enough to create a no start problem. To test for a parasitic draw, place your multimeter to the amps setting in series with the battery.
You also need to check all the battery, hot and ground wire connections. The service manual has a diagnosis procedure for the ignition module. They tend to fail in a variety of ways though, some slowly, others all at once. Start with the simple stuff first. Get the battery load tested too.
Harleys’ that run on a single-coil engine will make cranking sound, but there will be no spark from the cylinders. If your bike stalls while working, this is another sign that indicates there’s something wrong with the ignition coil. When some irregular sparks are sent to plugs from the coil, the issue occurs.