2003 36 v ezgo good batteries wont run

[JohnnieB]

Originally Posted by fixeruper

what to look for and how to test it i was going to try to jump it out but worried bout burning it up im new to this is there a trouble book that might help

The Owner, Service and Parts manuals can be downloaded here:http://www.buggiesgonewild.com/elect...g-manuals.html
They are the three .pdf files.

You are wise to be worried about jumpering things. Troubleshooting with a DVM produces less smoke and fire.

There is always the danger of the half ton cart taking off unexpectedly and running over someone or something, so lift the rear wheels off the ground and put on jackstands.

The solenoid is clicking, so connect your DVM between the B- and M- terminals.

Press the throttle pedal until the solenoid first clicks.
You should read FULL battery pack voltage.

If you don't get FULL battery pack voltage, there is a problem in the high current loop.
(High current Cables, F/R contacts, solenoid contacts. motor brushes, etc)

If you doe have FULL battery pack voltage, slowly press the pedal to floor.
The voltage should smoothly decrease to zero.
If it doesn't, either the controller is bad, or the ITS is bad.

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Even with the rear wheels off the ground, I'm not sure if the 3 x 12V battery pack you are using will spin the motor.

If the batteries won't charge to over 12V each, they are bad and cannot be used for troubleshooting.

[scottyb]

I agree, it could be as simple as the cart voltage being below the controller low voltage protection limit.

[fixeruper]

gotcha even though voltgage ant to bad 1 batterycan killthe hole system ill now load each battery thanks

[fixeruper]

thanks guys it was bad battery works good now

[scottyb]

Thank you for posting results, it helps anybody reading this with a similar problem......

One bad cell in one battery can stop the cart.