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20.  REVERSE LIGHT DOES NOT OPERATE (CONT) - TM-9-2320-364-20-2_558
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20.  REVERSE LIGHT DOES NOT OPERATE (CONT) - TM-9-2320-364-20-2_560
TM 9-2320-364-20-2      2-1335 (1)   Set multimeter select switch to volts dc. (2)   Connect positive (+) multimeter lead to wire 1149 at reverse relay R10, terminal 87 (Para 2-24). (3)   Connect negative (–) multimeter lead to a known good ground. (4)   Turn ON ENGINE switch (TM 9-2320-364-10). (5)   Shift transmission to R (reverse). (a)   If 10 to 14 vdc are not present, turn OFF ENGINE switch and go to Step 8 of this fault. (b)   If 10 to 14 vdc are present, repair wire 1149 (see schematic Fig 2-33) or notify DS Maintenance. (6)   Install two ECB covers and 15 screws. 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, 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)   Disconnect harness connector MC50. (2)   Attach a jumperwire to terminal D and a known good ground. (3)   Set multimeter select switch to volts dc. (4)   Connect positive (+) multimeter lead to wire 1149 at reverse relay R10, terminal 87 (Para 2-24). (5)   Connect negative (–) multimeter lead to a known good ground. (6)   Turn ON ENGINE switch (TM 9-2320-364-10). (a)   If 10 to 14 vdc are not present, turn OFF ENGINE switch and replace relay R10 (Para 7-95). (b)   If 10 to 14 vdc are present, turn OFF ENGINE switch, connect MC50, and replace ATEC ECU (Para 7-71). (7)   Install two ECB covers and 15 screws. VOLTAGE TEST

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