2004 TXT electrical problems / short

[radioman]

There appears to be a problem with the motor. While you got it out verify there is an open between A1 and A2 with a ohm meter. If there is open circuit the motor is going to need to be serviced or repaired. Like yurtle said it might be the brushes.

The other things you are going to need to check/repair is the circuits switches that was damaged with the shorted diode from installing it backwards. You can do this with a voltmeter measuring referenced from battery negative (put the negative lead on battery -). The places you need to check for voltage are as follows. Battery + voltage at the small white wire at the charger receptacle (originates through the reed switch from positive in the charger recept), with the forward rev switch in position this voltage continues through a micro switch on this assembly, next to the key switch through a blue wire, out of key switch on a green wire to another micro switch in the pedal box that closes when the pedal is depressed and then to the side of the solenoid coil with the red wires where you had the shorted diode. All of these items have to operate to get voltage to energize the solenoid. They are all connected in series.

Make sure you understand how to read an ohm meter checking the motor and post the exact ohm readings. S1 and S2 are called the field coils. A1 and A2 are called the armature connections (yurtle already covered this but here it is again) Both have relatively low resistance readings but I don't know the exact readings. No reading between S and A terminals is a good sign. A good thing to get familiar with reading ohms is to get a regular light bulb and measure the resistance. No reading between the A terminals indicate a problem inside the motor.

With the shorted diode removed you should be able to continue working getting the solenoid to energize in a smoke free environment. Protect cart from unexpected movement. With motor out it will not likely move.