How to Test a Golf Cart Motor Controller

By Bob Williams

August 6, 2023

Are you ever on the green and wish your golf cart had just a bit more gusto? If so, then it might be time to test the motor controller of your golf cart. Testing a motor controller can seem intimidating – many people assume that they need specialized experience or equipment to do it correctly. Luckily, that’s not always the case!

With patience and attention to detail, anyone with basic knowledge can test their golf cart motor controller. In this blog post, we’ll cover everything you need to know about how to test a golf cart motor controller – from what tools you need and what steps should be taken for a safe and successful testing process. Keep reading if you are ready to upgrade your gaming experience!

Check the voltage of the golf cart battery

Different controllers require different voltage levels, so this is an important first step to take. Measure the current draw of the golf cart motor controller by connecting a multimeter between the motor and battery terminals.

Ensure that it is set to measure amps (Amperage) and make sure that the readings are within acceptable limits. Depending on the power output rating of your controller, this number should be somewhere between 15-50 Amps or higher depending on how powerful your motor is

Inspect all wiring and connections to ensure they are secure

Your safety should always be a top priority when it comes to electrical work. That’s why inspecting all wiring and connections is crucial to ensure they’re secure before turning that light switch back on. Loose connections or frayed wires pose a fire hazard, putting both you and your property in danger.

Take the time to double-check everything, and don’t hesitate to call in a professional if you’re not sure what you’re looking at. After all, the peace of mind that comes with knowing your electrical system is in top shape is priceless.

Test the golf cart motor controller by turning it on and off several times

Once you’ve completed the previous steps, it’s time actually to test the motor controller. To do this, simply turn the switch on and off several times. If the golf cart runs each time you turn it on and off without mechanical issues, your motor controller is likely in good condition. However, if it fails to start or runs inconsistently, there may be an issue with the controller or one of its components.

Monitor the amperage draw of the golf cart motor controller during operation

In addition to testing the motor controller on and off, it’s a good idea to monitor its amperage draw during operation. An increase in amperage often indicates an issue within the motor controller or its wiring. If you notice any significant changes in your multimeter readings, it may be time to call a professional for further inspection and repairs.

Measure any voltage drop across terminals or wiring when power is applied

When it comes to electrical systems, there are few things as important as monitoring voltage drops. These drops can indicate problems with terminals or wiring that could lead to serious issues down the line. By measuring the voltage drop across these areas when power is applied, you can quickly detect any potential complications and take steps to address them before things get worse. It may seem like a small thing, but paying attention to voltage drops can make a huge difference in the safety and reliability of an electrical system. So, don’t hesitate to take the time to measure those drops and ensure everything is running smoothly.

Check for any fault codes that may be generated when powering up the motor controller of your golf cart

Modern motor controllers typically come equipped with some type of diagnostic system that can detect and report back problems within the system. If your controller is able to generate these codes, then it’s a good idea to check them out.

Faults can range from minor issues like wiring connections coming loose to more serious problems like shorts or voltage drops. Whatever the issue may be, knowing what caused it can help you take steps to address it quickly and properly.


In conclusion, if you are considering installing a motor controller on your vehicle, it is important to assess and inspect the system properly. Pay attention to the voltage of the battery, check that all the wiring and connections are secure, and test how it operates by turning it on and off multiple times.

As well as monitoring the current draw of the motor controller while running, look out for any voltage drops across terminals or wiring when power is applied, and look out for any potential fault codes.

By taking care to ensure that everything is in order before installation, you can be sure that your motor controller runs as intended in a safe manner.

Frequently Asked Questions

Q: What tools do I need to test a golf cart motor controller?

A: You will need a multimeter for measuring current and voltage and any other specialized tools or equipment required by the make and model of your golf cart motor controller. Additionally, you should wear protective gear when working with any kind of electrical system.

Q: How often should I test my golf cart motor controller?

A: It is recommended that you check your golf cart motor controller at least once yearly- more if used frequently or exposed to extreme weather conditions. Regular testing can help ensure that your motor controller is running safely and efficiently, which will help extend its life span. Additionally, it’s important to check for any issues, such as fault codes or wiring problems, that may arise after a period of time.

Q: What should I do if I notice an issue with my golf cart motor controller?

A: If you detect anything out of the ordinary during your testing process, it is important to take steps to address the problem immediately. Depending on the issue, you may be able to repair the motor controller yourself – however, more serious problems might require professional assistance from an experienced technician. In either case, taking prompt action can help prevent further damage and keep you safe while on the green.

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