Buggies Gone Wild Golf Cart Forum - View Single Post - 92 marathon wont go

scottyb · 04-07-2015, 06:43 PM

Some more checks you can make

CHECKING CONTROLLER INPUT
Connect (-) probe to B- terminal. Connect (+) probe to B+ terminal.
The reading should indicate approx. 0 volts with the resistor REMOVED and the pedal not pressed in the last 15-30 minutes.
Slowly depress accelerator pedal until the solenoid engages.
The reading should show the battery pack voltage. If the voltage is at or near battery voltage, the cart is in forward gear, and the motor is not turning, then the problem lies in the forward/reverse switch, the high amperage wiring, the speed controller, or the motor.

CHECKING CONTROLLER OUTPUT Connect (-) probe to controller M- and (+) lead to controller B-
With the key on and the cart in forward gear, press the pedal just far enough to hear the solenoid engage. You should read pack voltage between and M- and B-. Now continue to press the pedal down and watch the meter. The reading should gradually decrease to near 0 volts. If the input test was good and the ITS readings are correct and this test does not perform as described above then the controller has failed.

04-07-2015, 06:43 PM	#7
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,419	Re: 92 marathon wont go - controller? Some more checks you can make CHECKING CONTROLLER INPUT Connect (-) probe to B- terminal. Connect (+) probe to B+ terminal. The reading should indicate approx. 0 volts with the resistor REMOVED and the pedal not pressed in the last 15-30 minutes. Slowly depress accelerator pedal until the solenoid engages. The reading should show the battery pack voltage. If the voltage is at or near battery voltage, the cart is in forward gear, and the motor is not turning, then the problem lies in the forward/reverse switch, the high amperage wiring, the speed controller, or the motor. CHECKING CONTROLLER OUTPUT Connect (-) probe to controller M- and (+) lead to controller B- With the key on and the cart in forward gear, press the pedal just far enough to hear the solenoid engage. You should read pack voltage between and M- and B-. Now continue to press the pedal down and watch the meter. The reading should gradually decrease to near 0 volts. If the input test was good and the ITS readings are correct and this test does not perform as described above then the controller has failed.