Curtis 1204-001 < Troubleshooting

[MCallery]

With the cart running great for three years, it was time to replace the batteries, which obviously I did. The cart ran like a dream for about 1000 yards when I hit a good bump and then it died. Since then, the cart will not move.

In diagnosing this, I pulled the motor, did the 12v test and it ran. I checked the 36v coming off the batteries all the way through the potentiometer and the solenoid and yes, it was going to the controller.

Logic would tell me that if I comfortably tested every single part and knew that 36v was making it to the controller that everything prior to that is working.

I d/l the 1204 manual and there is a bench test that seems pretty straight forward. I was simply wondering if anyone here had a way to leave the unit in the cart and test it. I would have thought there should be a simply way of checking the outgoing voltage off the controller to make sure it was outputting correctly and if not, I've isolated my issue. TIA.

Note: 1994 EZGo Marathon, Curtis 1204-001 controller.

[JohnnieB]

Connect your DVM's negative test lead (black) to the controller's B- terminal and the Positive (Red) test lead to the controller's M- terminal.

Press pedal just far enough to make solenoid click and you should read full battery pack voltage (38.2V if fully charged). If you don't, the pack voltage isn't getting to the speed control portion of the controller, which is located between B- and M-.

If you do get pack voltage, slowly press pedal to floor and the voltage between B- and M- ought to smoothly decrease to 0V. If it doesn't the throttle signal is bad or the controller is bad.

[MCallery]

Thank you but what is a DVM?

[JohnnieB]

Digital Volt Meter