Golf Cart Motor A1 A2 S1 S2

If you own a golf cart, you know how crucial it is to maintain a healthy motor. The motor is the brain of your golf cart, so it’s critical to understand how it functions and how to troubleshoot any potential problems.

The A1, A2, S1, and S2 terminals are one feature of the golf cart motor that some people could find puzzling.-+ What functions do the golf cart motor’s terminals A1, A2, S1, and S2 perform?

It can be confusing as the golf cart motor’s A1, A2, S1, and S2 terminals connect the motor to the controller. The armature windings connect to the controller using the A1 and A2 terminals, whereas the motor’s field windings are connected to the controller using the S1 and S2 terminals.

In our guide, you can learn more about wiring your cart to avoid any damage in the long run. By the end, you’ll know how to conduct the following tests to ensure your wires are correct. (Read Can Spray Carb Cleaner While Engine Is Running)

Golf Cart Motor A1 A2 S1 S2 Wiring

How To Find Golf Cart Motor A1 A2 S1 S2 Wiring

Your golf cart motor can be fixed fairly easily, although assistance from a mechanic may be necessary. When wiring your golf cart’s A1 A2 S1 S2 motor, follow these steps:

  1. The first step is to place the motor’s intended location, which, depending on the make and model, is typically beneath an access hatch.
  2. Next, look for the motor terminals and properly connect the power cords.
  3. Locate the bolts holding the motor in place and screw them on next.
  4. Keep all the screws and other parts nearby to quickly find them when you need to fix something.

How To Test Golf Cart Motor A1 A2 S1 S2?

Before testing your golf cart motor, here’s the gear you need.

  • Volt meter.
  • Screwdriver.
  • Pliers.
  • Wrench.

Check Motor

Before you test anything, you must first inspect the motor using the following quick steps:

  1. Find the panel covering the golf cart motor at the back of the cart first.
  2. It’s a good idea to make notes or take numerous pictures of everything in the chamber of the golf cart motor before you start taking anything apart for future reference.
  3. Make sure the motor is undamaged by inspecting it.
  4. After the first step, you will test your motor briefly to see if everything is good.

Test The Solenoid

The solenoid, which distributes power to the golf cart’s many components, is a crucial component of the motor.

Before you test the solenoid, make sure you clean all of the terminals.

  • Make sure your golf cart’s battery is fully charged, and when you turn it on, listen for a faint “click.” That is, the solenoid operates properly.
  • If the solenoid doesn’t click, it’s probably broken and must be replaced immediately.

4 Terminals on A Golf Cart Motor

What Are the 4 Terminals on A Golf Cart Motor?

The most common marks on series motors are A1, A2, and S1. Stater, or S2 S, refers to the motor’s fixed windings. The most common markings on sepex or separately excited motors are A1, A2, and F1, F2. The word “fields” refers to the permanent windings of the motor. (Learn How To Fix High Exhaust Temperature)

What To Know About Testing Motor

Learning how to test a golf cart motor is not as hard as you think. In truth, it may be a relatively simple process if the correct tools and instructions are used.

Before You Test

Ensure your power source for charging the cart is operational before testing the golf cart motor.

  1. To test, use a 120-Volt tester and press the test button after inserting the probes into the electrical socket (black in the larger slot, red in the smaller one).
  2. You can rule out your power source problem by reading 110 and 120 volts.

Golf Cart Motor Testing Safety

It’s crucial to keep in place a few safety precautions before you begin.

  1. Ensure your golf cart is parked on a level surface and turn the key to the “off” position.
  2. To keep your golf cart from rolling away from you or over you, always use wheel chocks.
  3. To avoid getting shocked, always unplug the battery by removing the primary positive and negative connections from the battery pack.

Before Testing Golf Cart Motor

Before testing your motor, try the “reset” button, which you typically find on the exterior of electric golf carts. Next, test to see if you receive a voltage reading on your golf cart batteries. If not, your motor may not be the problem but your battery or golf cart charger.

Testing A Golf Cart Motor

You may take a few simple steps to test your golf cart motor.

Inspect Golf Cart Motor

  1. Find the golf cart’s rear motor cover. Remove the screws and set them aside.
  2. Before disassembling, take multiple pictures of everything for reference.
  3. Check for damage or issues.
  4. If not, move to the next step.

Test Golf Cart Motor For Short

You’ll need to check your golf cart’s motor terminals to ensure they send electric signals correctly. Set your multimeter to continuity or ohms setting. Your golf cart’s motor has four poles labeled A1, A2, S1, and S2, or F1 and F2, depending on the kind. (Learn How To Apply Brake Cleaner)

Series Electric Golf Cart Motor Vs. Sepex Golf Cart Motor

Switch the multimeter to the continuity check setting.

Check your multimeter for the following readouts as you test the following pole combinations:

  • Test S1 to S2 (or F1 to F2): Black probe on S1/F1 terminal and red probe on S2/F2 = 0.8-1.2 Ohms.
  • Test A1 to A2: Black probe on A1 and red probe on A2 = beep for continuity.
  • Test A1 or A2 to motor body: Black on A1/ A2 terminal & red on metal body = zero continuity.
  • Test S1 or S2 on motor body: Black probe on S1/ S2 (or F1/ F2 on Regen motors) and red wire on the metal body = zero continuity on the meter.
  • Test A1 to S1/F1: Black probe on S1/F1, and red probe on A1 wire: meter to read zero continuity.

If all tests read correctly, continue. If any tests fail, look at replacing or repairing the faulty terminal.

Note: These tests don’t highlight a short in the armature. This needs a special tool that only a golf cart mechanic or auto repair shop would have.

Test Golf Cart Motor Procedure

Test The Solenoid

The solenoid distributes electricity to different parts. Before you test, clean the terminals. Scrub the terminals with an old toothbrush or wire brush and a mixture of water and baking soda. (Read Cleaning Battery Terminals With Coke)

Wipe and dry your golf cart solenoid before you proceed.

  1. First, make sure the batteries in your golf cart are fully charged.
  2. Try to start your golf cart while listening for a slight “clicking” sound of the solenoid working correctly.
  3. If there isn’t a click, the solenoid will likely be at fault, and you’ll need to replace it.
  4. You can move on to the next step and rule out the solenoid if you heard a click, but the cart didn’t start up after it.

Tools Needed

To test an electric golf cart motor, you’ll need the following:

  • Screwdriver
  • Pliers
  • Wrench
  • Voltmeter or multimeter

Testing Electric Club Car

  1. Place your golf cart on a level surface.
  2. Remove the key by turning it to the off position.
  3. Use a jack to lift the golf cart and place it on jack stands.
  4. The electric motor will be situated close to the rear.
  5. Four wires, the A1, A2, S1, and S2 wires, should be visible. After marking or photographing the location of their connection to the motor, remove them.
  6. Test the motor by attaching a 12-volt battery that has been fully charged to the battery posts of the electric motor. You will now follow these instructions:
  7. Connect a negatively charged jumper cable to the negative post of your 12-volt battery that has been fully charged.
  8. From here, the S2 post on the electric motor will connect to the opposite end of the identical negative jumper cable.
  9. Connect your positive jumper cable to the 12-volt battery’s positive battery connector.
  10. The A2 connection on the electric motor will then connect to the other end of the same positive battery line.
  11. When your motor turns in any direction, you’ll know that everything is in order and that the motor is not affected by any problems with the wiring or electrical current.

How to tell motor is a series or shunt wound regen motor?

There’s little visually different. A shunt motor has parallel field windings, and a series motor has field windings connected in series to the armature.

Golf Cart Motor A1 A2 S1 S2