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Check for bad Solenoid

Summary

In this article as you may have guessed I am going to explain how to check a solenoid for problems. First you will need a couple of tools, a voltmeter and typically a ½” wrench.

How to check for bad selonoid

On a typical solenoid there are four post called terminals. There are usually two large and two small. Battery voltage is applied to the two small terminals to activate the solenoid which then connects the two large terminals together. From time to time the two large terminals get buggered up and the solenoid needs to be replaced. To check the solenoid is fairly simple though.

First thing we need to do is disconnect any cables from the two large terminals. Be sure to wrap the cable ends in tape and keep them separate from each other. Then set your voltmeter to OHMS and place a probe on each large terminals(see first image below). With the key off and the cart in a neutral position there should be no reading. Now with the cart in foreword position and key on step on the accelerator, you should hear a click coming from the solenoid, if you do then set you voltmeter to OHMS and place a probe on each large terminals(see second image below). You should have a reading of 0 to 0.4 ohms. Anything higher and it means that solenoid has buggered up contacts and should be replaced.

If you did not here a click coming from your solenoid then grab your voltmeter and set it to dc volts on the 200 scale and place a probe on each of the small terminals. With the key on and the cart in foreword step on the accelerator. You should see pretty close to full battery voltage. If you do see full battery voltage and there is no click, the coil inside the solenoid has failed and will need to be replaced. If your meter remains at 0 then there is a problem somewhere else in the cart.

NOTES: When buying a new solenoid besure to buy one that matches your carts voltage, most golf carts are either 36v or 48v. It will usally tell you on the side of the solenoid what voltage it is. If you use the D&D Motor Systems Choosing A Motor tool then you can be assured to get the right parts every time.


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