more than likely a bad resting directional contacter but dont rule out the switch and the wiring.possable coil but the rearly go bad and if it is the coil its best to change the entire directional contacter because it proably is worn out. and more than likely the driver built in the card is okbut you can check that at tb5 and tb6.good luck.but it is a contactor tip more likely lol

Code 23 is a posible contactor code. Check coil resistance, should be between 10-15 ohm. Recheck wiring to coils and from coils to card (wires#23 and # 27) to B plug on Card. Contactor tips on F&R contact assy that have high voltage drop across them can cause Code 23 or 24. Code 53 can be caused by tips also during plugging. If you have no forward, check normally open forward tips, and also check normally closed reverse contact tips.

Code 23 is a posible contactor code. Check coil resistance, should be between 10-15 ohm. Recheck wiring to coils and from coils to card (wires#23 and # 27) to B plug on Card. Contactor tips on F&R contact assy that have high voltage drop across them can cause Code 23 or 24. Code 53 can be caused by tips also during plugging.