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How To Test A Harley Ignition Module

How do you test a Harley ignition module? 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 do you diagnose a bad ignition control module?

What are the signs of a bad ignition control module? Acceleration Issues. The vehicle may shake, vibrate or jerk when the gas pedal is pressed. Temperature Problems. A faulty ignition module can cause a vehicle to overheat. No Power. The engine may turn over without starting.

How do you test an ignition control module with a multimeter?

Place the red lead of the multimeter on the positive coil terminal. Place the black lead to the battery negative terminal. Turn on the ignition switch to the “Run” position. The multimeter should read battery voltage at the positive terminal.

What does an ignition failure sensor do?

The IFS is responsible for keeping tabs on the voltage drop on the coils’ positive side so that your Engine Control Unit (ECU) can better monitor coil operation.

Can you 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”.

How do you test an electronic 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.

What happens when ignition control module goes out?

If the ignition module fails or has any problems it can lead to performance issues with the vehicle, such as misfires, hesitation, loss of power, and even reduced fuel economy.

How do I know if my stator is bad on my Harley?

What are the symptoms of a bad motorcycle stator? The most obvious symptoms of a bad motorcycle stator include no spark, weak spark, or intermittent spark (also known as misfiring). Hard starts and a poorly running engine can also be clues that your stator needs to be rebuilt or replaced.

Can you bypass a CDI box?

You can temporarily bypass a CDI box for troubleshooting purposes. The box amplifies the small signal generated from the spinning magnet located in front of the pickup coil in the stator, just before top dead center (TDC), when your fuel-air mixture is ignited. The box can’t generate continuous sparks.

What would cause an 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 is code P0320?

P0320 is a diagnostic trouble code (DTC) for “Ignition/Distributor Engine Speed Input Circuit Malfunction”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.

Does ignition module need to be grounded?

Everything mounted to the engine is grounded through the engine . The voltage regulator might need to be grounded but that shouldn’t keep it from starting . The ignition switch shouldn’t need a ground unless it’s illuminated .

Why is my ignition coil not firing?

If the ignition coil does not have spark, it’s time to check its wires. Use a test light to check the continuity on the signal wire and power wire on the ignition coil. If both wires are functional but the coil fails to produce spark, the ignition coil or the ignition control module is bad.

What are signs of a bad ignition coil?

If your car is experiencing any of the problems listed below, you may have a faulty ignition coil on your hands: 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.

How do you check points with a multimeter?

Correct, set to measure 12V, connect negative (black) lead to ground, positive (red) lead to points (yellow or blue) at coils. When points are closed, current flows from battery through coil primaries to ground, meter will read 0. When points are open, no current flows through coils, meter will read 12V.

Does ignition control module control fuel pump?

When the key is turned on, the powertrain control module (PCM) closes the fuel pump relay, which activates the fuel pump for about three seconds to pressurize the fuel injectors. When the engine starts, the CKP signals the PCM to keep the fuel pump and fuel delivery system running.

Will a bad ECM cause no spark?

It is extremely rare for a no spark condition to be the result of a faulty coil or ECM. Users get fixated on these items and jump to the conclusion they must be responsible for their problem because these items are easy to see and replace.

What side of a coil is positive?

When you hold the coil so the plug wires are to the left (like standard shovel or evo mounting, mounting holes at the rear), the negative side is on the top and the positive is on the bottom.

What are the symptoms of a bad Rectifier?

The battery can be drained due to the burnout of the diode. If the battery is the cause, you won’t have a problem with the faulty regulator rectifier. You will see signs of poor starts, erratic meter readings, and dimmed headlights right away.

How many ohms should a stator have?

Insert each probe into a stator socket. You should read around 0.2 to 0.5 ohms. If you show an open circuit with the “Open” or infinity reading or have higher resistance, then the stator is bad and you must replace it. If these tests all produce positive results, then the stator itself is good.

How do you test a stator on a Harley Davidson motorcycle?

Stator IB test or Ground Check: Switch your multi-meter to Ohm x 1 scale. Probe each stator wire with your positive lead on multi-meter and the negative to ground. There should be no continuity to ground on either wire. If there is continuity to ground, your stator is shorted to ground.

How can you tell if a CDI box is bad?

Symptoms could include misfiring, dead cylinders, backfiring, bizarre tach behavior, and countless other things related to how your engine’s running. The problem may get worse as the bike warms up. It might not even hold low revs at all.