Hi I’m new to this forum . Iv got a mobility scooter . With a fault on it . The forward speed is to slow even with the speed control dial turned up to max . However when in reverse the speed will go to max . Iv tested the throttle pod , it seems okay . Then I tested the voltage output to the motor from the controller . It only gets 12 v in forward mode , but in reverse it gets the full 24 v

 

Do you have a schematic of the power circuit?

 

 

This is virtually the same as what is on the scooter .

 

You may notice all the signals go into the main controller . This both the direction signals and speed signals . Which operate as they should . The only discrepancy is the voltage output to the motor . Which is 24 v in reverse and 12 volts in forward . Normally on these scooters it is slower in reverse and faster in forward .

 

Reverse the motor leads?

 

Reverse the motor leads?

Okay I had thought of that . Just wondering how the controller would react . When it would send out a reverse polarity signal to the motor . If you get what I mean

 

What’s the voltage on the ‘reduce speed’ terminal?

 

The voltage on the forward speed which is reduced speed is 12v . On the reverse mode it is 24 v . This ca n only be measured at the outllet terminals of the controller

 

The speed limit pot setting may be causing this. Try adjusting that pot and see what effect it has.

 

The voltage on the forward speed which is reduced speed is 12v . On the reverse mode it is 24 v . This ca n only be measured at the outllet terminals of the controller

Yes, but in reference to your posted schematic, What’s the voltage on the ‘reduce speed’ terminal?

 

Is the 'off' (zero speed) position of the throttle still at the factory setting in the pot range, or has it developed an offset from that?