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TM 9-2320-364-20-2
2-939
(1) Set multimeter select switch to volts
dc.
(2) Connect positive (+) multimeter
lead to wire 1020 at ENGINE switch.
(3) Connect negative (–) multimeter
lead to a known good ground.
(4) Turn ON ENGINE switch
(TM 9-2320-364-10).
(a) If 22 to 28 vdc are not present,
turn OFF ENGINE switch and
replace switch (Para 7-32).
(b) If 22 to 28 vdc are present,
go to Step (7) below.
(5) Turn OFF ENGINE switch.
(6) Connect positive (+) multimeter
lead to wire 1021 at ENGINE switch.
(7) Turn and hold ENGINE switch to
START.
(a) If 22 to 28 vdc are not present,
turn OFF ENGINE switch and
replace ENGINE switch
(Para 7-32).
(b) If 22 to 28 vdc are present,
ENGINE switch is OK.
(8) Turn OFF ENGINE switch.
VOLTAGE TEST
22 to 28 vdc are always present on wire 1431 at the ENGINE switch. 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.
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