According to the thermocouple control loop shown on the P81D, no temperature indication is ohown af Temperature indicating Contronler-309. Whot is the BEST way to troubleshoot this problem? Bypass the thermocouple junction connection at the thermocouple terminal head. Insert a thermocouple simulator in place of the thermocouple. Recalibrate the thermocouple transmitter. Run a new thermocouple extension wire in place of the old extension wire