- 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 do I know if my Harley ignition module is bad?
Usually when the module goes bad the bike either won’t start , or starts fine when cold and starts cutting out or dies when it warms up, and won’t restart until cold.
How can I test my ignition module?
Connect the ground lead from the 12-volt test light to the negative terminal on the ignition coil. Have your partner crank the engine over several times. Your test light should flicker on and off. If so, your module is working properly and no further testing is necessary.
How do you bench test An ignition control module?
- Remove one plug wire at the spark plug and insert an old spark plug into the end of the plug boot. ...
- Check for voltage at the coil positive terminal when the ignition key is on. ...
- Locate the ignition module positive (+) wire. ...
- Locate the ignition module negative (-) wire.
How do you test an ignition module on a small engine?
To test the operation of both the ignition coil and the spark plug, connect the tester between the spark plug boot and the spark plug . Then start the engine and watch the tester window. A spark plug misfire will immediately be evident in the tester window.
What causes the ignition control module to fail?
The common cause of one driver/transistor failing is a shorted ignition coil primary winding . This is a winding of wire within the ignition coil where each loop is separated by a very thin plastic coating.
What are signs of a bad ignition coil?
- Engine misfires.
- Rough idle.
- A decrease in car power, especially in acceleration.
- Poor fuel economy.
- Difficulty starting the engine.
- Check engine light is on.
- Exhaust backfiring.
- Increased hydrocarbon emissions.
What happens when ignition control module goes bad?
A faulty ignition module can affect ignition timing, resulting in an engine that misfires and runs rough . The engine may also run well at low speed, but won’t accelerate well. 3. Stalling: A failing ignition module can occasionally prevent the engine from getting spark, causing it to stall.
Can you bypass a ignition Control Module?
To allow the ECU to take control of ignition timing it will “bypass” the ignitor and send the signal to the ECU for ignition timing processing. ... The ECU then sends a signal back to the ignitor with the ignition timing adjusted and then the ignitor module fires the coil.
Can you bench test An ignition control module?
Can you test an ignition control module? Yes , You can definitely test an ignition control module and using a multimeter is one of the fastest way to do so. What does the ignition control module do? The Ignition Control Module or ICM is nothing more than a switch per se that turns the ignition system “On” or “Off”.
Does ignition module control fuel injectors?
Does ignition module control fuel injectors? The ICM doesn’t control the injectors , but the ECM will not pulse them without a signal from the ICM. The ICM monitors the reluctor wheel on the distributor shaft and triggers the ignition coil at the proper moment to send spark out from the coil to the correct cylinder.
What is an electronic ignition module?
An ignition module is the component in electronic ignition systems that functions as the contact breaker for the coil or coils. In most basic terms, an ignition module is an electronic replacement for old, mechanical contact breakers like ignition points .
Can you drive with a bad ignition control module?
A failing ignition control module can be a real headache at times. It can produce a wide range of engine performance problems , including preventing the engine from starting or stalling the engine as you speed down the road, just to let you resume your driving a few minutes later, as if nothing had happened.
Can you fix an ignition module?
You can instead have the ignition module tested at an automotive repair shop . Once you have a correct diagnosis of a failing module, you can perform the replacement yourself. If the mechanic informs you that there is a problem related to the module, but it is not the module itself, you might not need a new part.
What does a bad ignition coil sound like?
Engine misfiring will be seen in a vehicle whose ignition coils have failed. Trying to start the engine of such a vehicle will result in engine misfiring that sounds like a coughing, sputtering noise . ... A vehicle with a failed ignition coil will also result in vibration when it is idling at a stop sign or light.
