TXT series worked but now wont move either direction

[JohnnieB]

Originally Posted by corbox1

By TPS I am referring to the black position sensor under the floor mat that the metal probe goes into when the pedal is pushed.

Does the F&R switch have any test methods to rule out it being the problem while it is in the cart? I have seen the diagram to test for continuity, but is there a method to be sure that its functioning? I have looked online but haven't found any tests (only visually looking for burn marks). I only ask because my problem first presented itself in the form of reverse not working.

Throttle Position Sensor. Good description, I just haven't heard that term used for EZGO's ITS (Inductive Throttle System) sensor before.

There isn't a good way to test the F/R contacts other than in use since they have to pass several hundred amps and they Ohmmeters we typically have only produce a few milli-amps at the most and are woefully inaccurate when measuring less than about 10Ω or so.

However, a go/no-go check can be done with a voltmeter when F/R is installed in the cart.

If the solenoid has a resistor connected between its large terminals, the voltage between the controller's B- and B+ terminals will be s few volts less than the battery pack voltage.

Leave the negative test lead attached to the controller's B- terminals, shift direction selector to forward and measure the voltage on the four cables attached to the F/R. All four should have the same voltage you get between B- and B+ at the controller. If one or more doesn't have that voltage, there is an open contact. Repeat with direction selector in reverse.

[corbox1]

If the solenoid has a resistor connected between its large terminals, the voltage between the controller's B- and B+ terminals will be s few volts less than the battery pack voltage. Total pack voltage = 31.9V. Solenoid does have a resistor. voltage between controller B- and B+ terminals = 31.7V.

Leave the negative test lead attached to the controller's B- terminals, shift direction selector to forward and measure the voltage on the four cables attached to the F/R. Rear of F&R switch (towards rear of cart) in Forward shift position I get 31.8V on 6 o'clock stud, 1.4V on the other 3. In reverse position, I get 31.8V on 6 o'clock stud, 1.4V at 12 oclock stud and 0V on the other two.[/B][/B] All four should have the same voltage you get between B- and B+ at the controller. If one or more doesn't have that voltage, there is an open contact. Repeat with direction selector in reverse.[/QUOTE]

[JohnnieB]

The 6 o'clock stationary contact is not making contact with the contact on the moveable cam.

See attached highlighted schematic, F/R is in F.