Intermittent dead peddle 97 ez go (kinda)

[bokeasmowl]

Mines doing the same thing. I'll be keeping an eye open here for suggestions as well.

[JohnnieB]

I'm not familiar with Logisystem controllers, but here is a little something I put together a while back that should narrow the problem down to a specific area.

Universal troubleshooting for a DC cart that won't go forward or backwards.

Lift rear wheels off the ground and put on jackstands so the half ton cart doesn't take off unexpectedly and run over someone or something.

1. Measure battery pack voltage. Cart batteries ought to be charged after each use, so they ought to be fairly close to 100% SoC, but lower is fine for troubleshooting. However, you do need to know what the pack voltage is to troubleshoot.

2. Does the solenoid click when the pedal is pushed?

a. If not, break out the schematic for the type drive system you have and troubleshoot the solenoid activation circuit.

b. If so, the problem is in the high current circuit. Go to Step-3.

3. Connect your DVM's test leads between the controller's B- and M- terminals (M- is labeled A1 on PDS controllers) and press pedal just far enough to make the solenoid click and you should read FULL battery pack voltage.

a. If not, break out the schematic for the type drive system you have and go looking for the battery pack voltage with the test lead that was attached to the M- terminal.

b. If so, go to Step-4

4. Slowly press pedal to floor. Voltage between B- and M- should smoothly decrease to Zero.

a. If not, the problem is either within the controller or in the throttle circuit. Go to Step-5

b. Is so, the motor ought to be spinning, or something ought to be getting hot. There are a lot of amps flowing somewhere.

5. If the voltage between B- and M- does not decrease to Zero when pedal is pushed to floor, verify the controller is receiving the proper throttle signal from the throttle circuit. Note: Different make/model controllers have different throttle signals even though they may use the same ITS sensor.

a. If the throttle signal is correct, the controller is most likely bad.

b. If the throttle signal is not correct, break out the schematic for the throttle type and controller you have and troubleshoot the the throttle circuit.

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The above process narrows the problem down to a specific area, but does not tell you how to troubleshoot the specific circuits. To do that, you'll need a schematic for the specific drive type and controller.

[sowilliams]

Originally Posted by sowilliams

I'll be watching this one as in the last two days I'm having a similar problem. Cart running fine, let of pedal to make a turn, hit pedal again and nothing. Pump pedal a couple of times and it goes again. I have a series but sure sounds like the same issue.

Found my problem, it was a loose wire on B- on controller.

[Hillbilly Deluxe]

Awesome! Thanks JohnnieB. I will try to do some diagnistics today after work.