I have a 1992 EZGO Marathon electric golf cart. I was golfing last Saturday, got off the cart, took my swing, got back on and the cart only clicked but did not move.
I have read many of the threads in this site to try to solve the problem but am still no further ahead. Her are some of the checks performed.
The batteries are new and fully charged with a reading of 38.6 volts across terminals BL- and BL+
When depressing the accelerator, the solenoid clicks, but no movement.
The F/R switch has been rebuilt and getting good contact.
I checked all cables large and small for being loose, frayed, burnt etc. etc. and all is good. All cables by the way are new and were replaced a few months ago.
CHECKING SOLENOID
When checking on the + battery side terminal (large terminal) of the solenoid, I get full battery voltage.
When checking on the controller side of the solenoid, I get 3 to 4 volts less than full battery voltage.
When putting the volt meter + on the positive side of the solenoid and the - on the controller side of the solenoid, I get a zero volts reading. However, when I push the accelerator until it clicks, the voltage reading goes to zero.
POWER TO CONTROLLER
When I connected (-) probe to M- terminal and (+) probe to B+ terminal, I got a reading of 33.7 volts. Approx. 5 volts less than full battery voltage. When I started depressing the accelerator, the voltage jumped to full voltage immediately. Now, I dont know if this is good or bad???
All this time, the motor did not turn.
I also checked the potentiometer as well by pulling the black and white wires that come from the potentiometer to the controller.
I put the (-) probe of the meter in one cable and the (+) probe in the other cable, set the voltmeter to read 20,000 ohms and started depressing the accelerator. I got a reading from zero to 7000 ohms at full throttle. Seems OK.
Now, Im stuck and do not know what direction to go.
I will check the motor to see if the motor turns. If it does then I know the problem is upstream. Looking for suggestions.
I have read many of the threads in this site to try to solve the problem but am still no further ahead. Her are some of the checks performed.
The batteries are new and fully charged with a reading of 38.6 volts across terminals BL- and BL+
When depressing the accelerator, the solenoid clicks, but no movement.
The F/R switch has been rebuilt and getting good contact.
I checked all cables large and small for being loose, frayed, burnt etc. etc. and all is good. All cables by the way are new and were replaced a few months ago.
CHECKING SOLENOID
When checking on the + battery side terminal (large terminal) of the solenoid, I get full battery voltage.
When checking on the controller side of the solenoid, I get 3 to 4 volts less than full battery voltage.
When putting the volt meter + on the positive side of the solenoid and the - on the controller side of the solenoid, I get a zero volts reading. However, when I push the accelerator until it clicks, the voltage reading goes to zero.
POWER TO CONTROLLER
When I connected (-) probe to M- terminal and (+) probe to B+ terminal, I got a reading of 33.7 volts. Approx. 5 volts less than full battery voltage. When I started depressing the accelerator, the voltage jumped to full voltage immediately. Now, I dont know if this is good or bad???
All this time, the motor did not turn.
I also checked the potentiometer as well by pulling the black and white wires that come from the potentiometer to the controller.
I put the (-) probe of the meter in one cable and the (+) probe in the other cable, set the voltmeter to read 20,000 ohms and started depressing the accelerator. I got a reading from zero to 7000 ohms at full throttle. Seems OK.
Now, Im stuck and do not know what direction to go.
I will check the motor to see if the motor turns. If it does then I know the problem is upstream. Looking for suggestions.