Take your ohm meter and touch both ends of the heating element. You should see 27 ohm on the meter. If you see that, follow the black and red wires from the smoke fan motor to the white Leoco connector and plug in the connector to the plug on the PCB. Next take your meter set to continuity and touch the red wire where it connects to the motor with one probe and the other end to the area on top of the PCB where the red wire plugs into. Do the same with the black wire. If you show no continuity, you know what to address.
Go AUX-9 and then AUX 8 with the engine sound shut off. See if you can hear the fan motor spinning.
Check for good heater then fan motor continuity then see if the fan motor is spinning with the fan motor off. I had one do that and by pulling and reseating the R2LC all was good I have replaced many fan motors in that engine. Let us know what you see.
Take a 9V battery with jumpers hooked to it and quickly touch the fan motor contacts to see if your motor is any good. Do this split second and do not hold it on. By touching, you will know if it is any good.