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Page Title: CONTINUITY TEST
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TM 9-2320-364-20-4      2-3049 (1)   Set multimeter select switch to ohms. (2)   Hold arctic heater switch in START position (TM 9-2320-364-10). (3)   Is there continuity between terminals 5 and 2 and terminals 5 and 4 when arctic heater switch is in START position? (a)   If there is no continuity, replace arctic heater switch (Para 21-3). (b)   If there is continuity, arctic heater switch is OK. (4)   Release arctic heater switch. (5)   Connect arctic heater switch. CONTINUITY TEST Remove all jewelry such as rings, dog tags, bracelets, etc.  If jewelry or tools contact positive electrical circuits, a direct short may result.  Damage to equipment, injury or death to personnel may occur. (1)   Set multimeter select switch to volts dc. (2)   Connect positive (+) multimeter lead to relay R33 terminal, terminal 30. (3)   Connect negative (–) multimeter lead to a known good ground. (4)   Set arctic heater switch to START, then to ON position (TM 9-2320-364-10). (a)   If 22 to 28 vdc are not present, turn OFF arctic heater switch and repair wire 1645 (see schematic Fig 2-74) or notify DS Maintenance. (b)   If 22 to 28 vdc are present, wire 1645 is OK. (5)   Turn OFF arctic heater switch. VOLTAGE TEST NOTE Relay test must be performed with relay partially removed.

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