Harley davidson ignition module testing There's a sticky in the electrical section on the procedure. The components for the ignition system includes a timing rotor (timing cup), sensor plate with an inductive pickup, ignition control module, ignition coil and spark plugs. The ignition module plays a crucial role in the overall performance of the motorcycle by determining the timing and the delivery of sparks to the engine. The TC88 does not require a camshaft position sensor (CMP) and this sensor may be unplugged or removed on 1998-2000 models. A spark tester helps verify spark plug performance, ensuring reliable ignition. The wiring connecting the systems together must remain intact. M. Jul 23, 2023 · Harley Davidson ignition coil problems can be a frustrating issue for motorcycle owners. Dec 23, 2015 · Harley Davidson Softail: Electrical Diagnostic Guide Late model Softails use a complex network of computers to monitor the engine, transmission, and braking system. Jul 13, 2013 · What did you have in it for an ignition module? I have seen it many times with Dyna "S" modules when someone leaves the bike ignition switch in the on position while it isn't running. Jan 24, 2024 · The ignition coil is connected to the spark plugs through spark plug wires, which are specially designed for their specific duty. DYNA “S” Electronic Ignition Kit – Dual Fire VT Part No. These are the fuel system, ignition system, and all the mechanical components. Apr 2, 2020 · In order to test the ignition module 'per the book' the break out harness has to be installed between the ignition module and the main harness. 1978 Strokershovel Lowrider 100 inches. When they malfunction, it can lead to a range of issues, including engine misfires, reduced power, and even stalling. The factory service manual even has the specifics to fab the breakout harness. The ignition module has a red light that flashes when I crank the engine, but there’s no spark in either cylinder. And ignition module that doesn't use an overcurrent circuit can do that. May 4, 2016 · I hope this is of value to someone. These problems occur and, although difficult to find at times, a series of test will help you narrow down the Mar 28, 2024 · The ground wire basically imitates the function of the ignition points/module. sends power to the ignition coil. With a spark plug attached to the coil and the threads of the spark plug grounded to the engine case, hold the ignition module so it if grounded. us/kyVeRH coil packs Jan 24, 2024 · 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. The coil Oct 21, 2023 · How to Put a Harley Ignition Module to the Test When it comes to troubleshooting your treasured Harley’s electrical adventures, the ignition module is the first in line that warrants your attention. Shop all the top brands like ACCEL, Dynatek, V-Twin Customer: I have a 2003 Sportster 1200. In this article, you will get to know all about the Harley-Davidson ignition coils, how to Feb 19, 2010 · ignition module test?The ignition system on a car or bike is actually pretty simple. This comprehensive guide will provide you Jun 12, 2016 · My ignition module direction say my says it is important my coils primary tests between 2. Point can have a +-9 degree swing in timing!!!! Oct 10, 2023 · Harley-Davidson motorcycles are renowned worldwide for their durability and performance. Aug 9, 2022 · It looks like the stator wires from the crankcase go right into the ignition module, so don't think I can do any testing there until I open that up. If it starts right up after cooling it down with this freezing spray you have found a thermal defect caused by heating of the component. 1996 FXDS-CONV S&S E. Aug 20, 2024 · Unlock the secrets to testing Harley-Davidson ignition coils in our comprehensive guide. In this video, I show how to run through all potential cranks with no spark causes without using special/expensive tools. 1974 Suzuki GT750 Lemans (Water Buffalo) May 25, 2025 · Worried about your Harley Davidson Ignition Coil Problem? This article will take you through a definitive troubleshooting and probable fixes for your Harley. accepts no responsibility for improper installation. S. Mar 18, 2025 · If you've encountered some challenges with your Harley's ignition switch, you might be facing a few unexpected hiccups during your rides. 5 Ohms) - just checking for any broken wires. Made in the U. This is a 3ohm 12 volt coil for motorcycles that use a Dyna Electronic Ignition. Have your partner crank the engine over several times. But fear not, there are ways to address these common problems effectively. How do you test a Harley Davidson ignition module? Feb 19, 2016 · This article applies to the Harley Davidson Sportster (1995-2016). Stay tuned to learn more about the signs, causes, Jul 1, 2011 · Finally, he came across comments which indicated that detonation problems were fairly common with Sportsters because of the ignition settings and advance curves that Harley-Davidson uses in its stock ignition module. A. This is performed by points grounding or ungrounding the free end of the coil or by an electronic module grounding it when triggered by a trigger. This ignition module is designed for replacement of the original equipment ignition module on specific Harley-Davidson motorcycle models with electronic ignition. Depending on the particular part number, this module may be installed on the following models, respectively: For Harley-Davidson owners, understanding the wiring diagram of the ignition module is essential. Oct 10, 2011 · Before you worry about your module, do an Ohm test on your coil, after the bike/coil is hot. Doc Harley from the Service Clinic at Low Country Harley-Davidson to help you with the health of your motorcycle! This week shares a tech tip for older motorcycles with ignition in the cam cover. See Additional Information below for fitment. When the ignition coil malfunctions, it can lead to a variety of issues, including misfires, hard starting, and even engine A common problem with the Evo’s is the standard ignition module failing causing the bike to backfire through the carb & misbehave Twin Tec is a second produc This information is for a late Harley Evo Softail but will hole true for most all Evo's. Once those are un-plugged from the coil, use a ohm-meter to test the primary and secondary windings. I don't have Jun 4, 2014 · Components can go bad without causing a total failure. This product should only be installed by a knowledgeable and trained motorcycle technician. Measure the primary resistance between the coil’s small terminals and the secondary resistance between the spark plug terminals. With practical tips on testing conditions, visual inspections, and documenting results, you’ll ensure your motorcycle's ignition system operates smoothly. One such problem often reported is with the ignition switch. If you are experiencing a no spark condition, it is important to test and troubleshoot these components to determine if they are faulty or damaged. Aug 3, 2025 · Diagnosing Harley Davidson ignition module issues requires tools like a multimeter to measure electrical flow and voltage. Ride with confidence by Apr 30, 2025 · Explore common Harley Davidson ignition coil problems and how to fix them fast. It will overheat the coil and cause it to crack or even blow out a chunk. This comprehensive guide walks you through visual inspections, resistance measurements, and spark tests, while highlighting symptoms of a faulty coil like engine misfires and reduced fuel efficiency. If the coil passes the test, I'll dig up and post the module test, unless it's done with a plug in scanner. This is a little side project that I am working on. Testing with a multimeter can confirm if the resistance is out of spec, indicating a need for replacement. The ignition coil is an essential component of the motorcycle’s ignition system, responsible for generating the high voltage needed to ignite the fuel and air mixture in the engine. For burns and bare spots. V-Twin MFG. However, like any vehicle, they can experience technical issues. Using ignition module separately may result in adverse engine operation and/or damage to vehicle electrical and engine components. Misfiring and popping as if I'm hitting the kill switch on and off repeatedly. If so, your module is working properly and no further testing is necessary. The "industry standard Oct 8, 2025 · To test a Harley coil, use a multimeter set to the ohms setting. Basically in a nutshell the coil is powered on one end to 12V and the other end is bounced off ground to the beat of the music. 32-7778 & 32-0801 (Includes Coil) This is a custom application and rider safety depends on proper installation. Use a multimeter to check resistance across the module’s terminals per service manual specs. Gain insights on troubleshooting tips to identify and fix ignition problems, ensuring your ride is ready and reliable. May 19, 2016 · 2004 Dyna Lowrider Harley Heavy Breather,Stage 1,Screaming Eagle mufflers. Learn more now! Feb 10, 2021 · V-Twin Harley Davidson forum. I have checked the charging system and it's good 14v+. There’s no spark, even though I installed a new ignition coil. The crankshaft position sensor is used to determine where the engine's position is and when the plug will fire. Weak or orange spark indicates (low voltageor) bad coil output. C. COVER TABLE OF CONTENT VOLTAGE DROP TEST IGNITION SYSTEM IGNITION COIL & SPARK PLUG CABLES TEST CHARGING SYSTEM BATTERY TEST TURN SIGNAL CANCELER CRUISE CONTROL-ULTRA MODELS SOUND SYSTEM (NON-ULTRA) TROUBLESHOOTING SOUND SYSTEM TROUBLESHOOTING - FOR ULTRA MODELS TLE ULTRA SIDECAR AUDIO TROUBLESHOOTING DOMESTIC MODELS WIRING DIAGRAMS HDI WIRING Jul 7, 2025 · Complete guide to Harley Davidson ignition switch problems including symptoms, troubleshooting, repair solutions, and prevention tips for reliable operation. Set the meter to Rx10: Test the resistance of the primary windings - touch both meter leads to the terminals on the coil. The module will sometimes work with the wrong coil for a short time. How do I know if I have a bad ignition module? 1. The reading should be low (. This is how you replace an ignition module on a 2003 Harley Sportster Learn everything you need to know about Harley Davidson ignition coil wiring diagram, including how to properly connect and troubleshoot your bike's ignition system. Do you have the factory service manual at hand ? Apr 18, 2017 · If the coil had good strong spark to both plugs when testing the the problem lies with the sending signal which indicates that the Ignition Module may be the culprit. Mechanic's Assistant: Just to clarify, can you specify which light it is? Does it blink initially and then remain steady? Customer: It Oct 16, 2024 · Discover how to effectively test a Harley Davidson ignition coil to keep your motorcycle running smoothly. not the ignition. and has a 30,000V output. By having a clear understanding of the wiring diagram, owners can troubleshoot electrical issues and make necessary modifications to improve Dec 23, 2019 · The ignition module from a 1994 Sportster. 5 - 1. I'm trying to hook up this ignition pick up that a buddy of I gave to me, got a number two printed on the back where the little cup spins inside the little module Mar 22, 2016 · Harley Davidson Touring: Performance Diagnostic Guide Proper engine performance is the result of many systems working together all at once. The ignition system is tasked with correctly energizing the spark plug at the needed time during the combustion cycle. Bad on off switch and key switch are other possibilities as well so I would check them and eliminate them as the cause before changing the module. Jun 24, 2013 · If Harley-Davidson speedometer reads ‘BUS Er’ with the ignition key switch turned ON (engine stop switch at RUN with the engine off), check serial data line for an open or short to ground between diagnostic link [91A] terminal 3 and ICM connector terminal 12. From slight inconveniences to potential safety concerns, these issues shouldn't be taken lightly. 5 ohms but it tests at 5 could this be a reason my bike is only firing in one cylinder? 1986 FXR Sep 30, 2008 · How to check Dual Fire coils (Pre TwinCam): The ignition coil will need to be unplugged from the wiring harness at the point where the smaller wires connect to the coil. One of the Oct 6, 2024 · Ignition coils play a crucial role in the smooth functioning of your Harley-Davidson motorcycle. Discover symptoms, causes, and expert tips. Your test light should flicker on and off. Depending on the particular part number, this module may be installed on the following models, respectively: Harley Ignition Systems Make sure your bike is performing at its peak with a great selection of Harley ignition systems from J&P Cycles. Jan 3, 2012 · If it ran before, the coil has ruined the ignition module. Learn essential techniques using multimeters and specialized tools to diagnose common issues like weak sparks and overheating. Turn the ignition switch on and place the rotor magnet next to the ignition module pickup sensor. Sep 16, 2016 · My question is on the ignition system. Get a can of component cooler or sometimes called freeze mist to spray on it. How To Check Your Harley Davidson Ignition Coil Pack, a quick how to on diagnosing your harley coil pack, so you can check it and replace it if needed ebay store: https://ebay. As a dedicated Harley owner, it’s essential to know how to test ignition coils to ensure optimal performance and prevent costly repairs. Check for an open diagnostic test Jun 16, 2025 · In summary, the ignition coil and control module are critical components of your Harley Davidson’s ignition system. Engine performance issues. Read on to learn more and get your Harley back in top condition! This ignition module is designed for replacement of the original equipment ignition module on specific Harley- Davidson motorcycle models with electronic ignition. These systems must stay properly powered by the battery. The ignition module and coil that make up this Race Ignition System are matched components, designed to ensure compatibility. The ignition module in this kit is designed for replacement of the original equipment ignition module on the following Harley-Davidson motorcycle models with electronic ignition: The components for the ignition system includes a timing rotor (timing cup), sensor plate with an inductive pickup, ignition control module, ignition coil and spark plugs. Chasing down an intermittent ignition problem can leave you pulling your hair out in the garage. V-Twin Mfg. You need to replace both. This video demonstrates how to install the ignition, rotor and cam sensor plate on Harley Davidson EVO Evolution engine. This comprehensive guide will delve into common Harley ignition switch problems, their causes, how to fix them, and proactive measures to prevent them. Remove the mounting screws from the ignition module and tilt it out. The BAS sensor is functioning properly. Plus check all your Ignition wiring. Having designed an electronic ignition module for Harley's that is still sold on the aftermarket, I have done LOTS of testing and can guaranty you that no point system is accurate enough to produce more engine power than an electronic ignition. The wire coloring and the electronic module may be different but ho May 24, 2023 · [Related: Harley Charging System Diagnostics Guide] [How to Fix a Harley’s High Idle] Common Causes of No Spark Issues Several common issues can cause a no spark problem in a Harley Davidson motorcycle: Faulty Ignition Switch: A worn or damaged ignition switch may not provide power to the ignition system, preventing the motorcycle from starting. We have everything you need to keep your engine running smoothly, including complete ignition kits, programmable systems, coils, covers and modules suitable for a number of different Harley-Davidson models. Even complex, modern bikes, like late model Harleys are simple to diagnose if you follow a plan and know how the systems work together. . When the Ignition module goes bad, can it be an intermittent issue? From time to time my bike runs really bad. Screaming Eagle ignition,V&H Short shots. Discussion on V-Twin Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster, and more. To test the primary The components for the ignition system includes a timing rotor (timing cup), sensor plate with an inductive pickup, ignition control module, ignition coil and spark plugs. You're issue sounds like a coil taking a crap. Set the meter to Rx10,000: Test the secondary windings - touch one test lead to Jul 14, 2016 · Next test if 12v and ground are good. Similar to procedures are used on S&S TP Ulitma Delkron Jims Revtech and S&S hi 4 ignition Feb 1, 2014 · The TC88 is compatible with all 1998-2003 carbureted Twin Cam 88® models using an ignition module with two 12 pin connectors. Compare the readings to the manufacturer’s specifications to determine if the coil is working properly. If the high tension lead terminal is gapped a reasonable amount from the engine, there should be a bright white spark. Feb 3, 2004 · What would be the symptoms of a bad ignition module?Anyone had one go bad recently?Thanks for any info. I haven't drilled out the rivets yet to get at the stator. Measure the continuity between the sensor’s black wire and ignition module terminal 9. Electrical components like coils that are sealed units may look fine on the outside but could To test the ignition module, first locate it near the engine’s crankcase. Nov 4, 2023 · Hello to the community, I'm here in hopes to get help figuring out the firing problem I have on my Harley-Davidson Evo road King. Here is an example of what I am talking about. How do I test the crankshaft position sensor wiring? To test the crankshaft position sensor wiring: For 2004 to 2006 Sportsters: Measure the continuity between the sensor’s red wire and ignition module terminal 8. Aug 12, 2018 · The ignition module could be getting hot and breaking down electrically. Don't let Oct 25, 2025 · A failing Harley ignition coil often causes misfires, difficulty starting, poor fuel economy, and weak spark. Nov 4, 2024 · Struggling with a non-starting Harley Davidson? Discover how to test your ignition switch effectively! This article discusses common issues like wear and faulty wiring, key warning signs, and detailed testing methods using visual inspections and a multimeter. If the CMP sensor fails, it may cause a short circuit that will prevent the TC88 from operating. In this article, we’ll explain how to diagnose the problem and what you can do to fix it. Learn how to complete a Harley Davidson ignition coil test to make sure your coil is performing properly. Jun 29, 2012 · Ignition Coil Test Test using a Multi-Meter: Unplug the wires going to the coil and remove the spark plug caps. 0:00 Semi Cinematic Intro 2:56 Begin Feb 1, 2025 · Curious about testing a Harley Davidson coil? Uncover the intricate process of diagnosing ignition issues and what to do if resistance levels are off. Once this is known, the ignition module or E. 5 and 3. mpkin wwsft vvevy icnnybk cavyxu yrejg ehp bzo ozmb nxxyn vkzuno pkzlbe bano uctwx yduiw