I have a throttle that does not respond to any input, here's what I have done so far;
- I used a generic 'general ebike tester' that has a built in throttle tester to test the throttle and it was working fine, to be sure, I hooked 5v to the throttle and with a multimeter, I measured the outout which was fluctuating between 0.8v and 4.8v as I was twisting it which looks normal.
- I then measured the voltage at the controller throttle plug which was outputting 5v. To make sure, I used a piece of wire to connect the 5v with the input and the motor was spinning full power so I believe there's nothing wrong controller side.
I verified that the throttle works and that the motor spins without throttle plugged in, I and then found an old throttle laying about, I did test it with ebike tester and with a multimeter, passed both tests, hooked it up and still nothing. I then hooked up my multimeter between the controller and throttle on the 5v supply side, what I noticed is, on the output with the throttle disconnected I'm getting 5v from the controller but as soon I plug in the throttle, the output drops to 1.2v, as soon I disconnect it, it goes back to 5v. I then connected my multimeter on the signal/input side, with throttle disconnected it's at about 20mV which looks normal but when I connect the throttle, it jumps to 400mV-550mV and stays there and it does not change no matter how far I twist the throttle.
I have no idea what else I can try. I did order a brand new throttle but it will take few days to arrive. Only thing that comes to my mind is perhaps there might be a short somewhere hence throttle does not work and why the voltage drops but it works fine when I connect the 5v straight to the input controller side? I inspected the wires and they all look ok. Any input is appreciated.
- I used a generic 'general ebike tester' that has a built in throttle tester to test the throttle and it was working fine, to be sure, I hooked 5v to the throttle and with a multimeter, I measured the outout which was fluctuating between 0.8v and 4.8v as I was twisting it which looks normal.
- I then measured the voltage at the controller throttle plug which was outputting 5v. To make sure, I used a piece of wire to connect the 5v with the input and the motor was spinning full power so I believe there's nothing wrong controller side.
I verified that the throttle works and that the motor spins without throttle plugged in, I and then found an old throttle laying about, I did test it with ebike tester and with a multimeter, passed both tests, hooked it up and still nothing. I then hooked up my multimeter between the controller and throttle on the 5v supply side, what I noticed is, on the output with the throttle disconnected I'm getting 5v from the controller but as soon I plug in the throttle, the output drops to 1.2v, as soon I disconnect it, it goes back to 5v. I then connected my multimeter on the signal/input side, with throttle disconnected it's at about 20mV which looks normal but when I connect the throttle, it jumps to 400mV-550mV and stays there and it does not change no matter how far I twist the throttle.
I have no idea what else I can try. I did order a brand new throttle but it will take few days to arrive. Only thing that comes to my mind is perhaps there might be a short somewhere hence throttle does not work and why the voltage drops but it works fine when I connect the 5v straight to the input controller side? I inspected the wires and they all look ok. Any input is appreciated.