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Page Title: VOLTAGE TEST
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TM 9-2320-364-20-4      2-3011 (1)   Remove 15 screws and ECB covers. (2)   Set multimeter select switch to volts, dc. (3)   Connect positive (+) multimeter lead to INTERAXLE relay R20, terminal 30. (4)   Connect negative (–) multimeter lead to a known good ground. (5)   Turn ON ENGINE switch (TM 9-2320-364-10). (a)   If 10 to 14 vdc are not present, turn OFF ENGINE switch, and repair wire 1882 (see schematic Fig 2-72) or notify DS Maintenance. (b)   If 10 to 14 vdc are present, wire 1882 is OK. (6)   Turn OFF ENGINE switch. VOLTAGE 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. Circuit breakers CB5, CB6, CB12, CB20, CB22, CB23 and relays R3, R13 - R19, R26, R28, R32 and R33 are always electrically hot and can cause severe injury to personnel.  Care must be exercised when working under the electrical circuit board cover. (1)   Connect positive (+) multimeter lead to INTERAXLE relay R20, terminal 86. (2)   Connect negative (–) multimeter lead to a known good ground. (3)   Turn ON ENGINE switch (TM 9-2320-364-10). (a)   If 22 to 28 vdc are not present, turn OFF ENGINE switch, and repair wire 1888 (see schematic Fig 2-72) or notify DS Maintenance. (b)   If 22 to 28 vdc are present, wire 1888 is OK. (4)   Turn OFF ENGINE switch. VOLTAGE TEST Relay test must be performed with relay partially removed. NOTE

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