TM 9-2320-361-20 Table 2-4. Electrical Troubleshooting (Contd). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 6. Repeat steps 4 and 5 for pins B, C, and D. Voltage should be present at all pins tested. a. If voltage is present, replace personnel heater (para. 14-2). b. If voltage is not present at one or more pins, replace or repair harness (para. 4-51). 2-145