TM 9-2320-209-34-2-3 FRAME 3 1. Cool thermostat (1) at 20°F for 30 minutes. 2. Using ohmmeter, check continuity through thermostat (1) by placing one lead on terminal (2) and other lead on terminal (3). IF CIRCUIT IS CLOSED, GO TO FRAME 4. IF CIRCUIT IS OPEN, THROW PART AWAY AND GET NEW ONE. END OF TASK 21-81