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TM 9-2320-364-20-4
2-2995
(1) Set multimeter select switch to volts
dc.
(2) Connect positive (+) multimeter lead
to HI RANGE LOCKOUT relay R23,
terminal 86.
(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,
perform Step (5) below and go to
Step 14 of this Fault.
(b) If 22 to 28 vdc are present,
wire 1095 is OK.
(5) 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) Set multimeter selector to ohms.
(2) Is there continuity on wire 1435
between HI RANGE LOCKOUT relay
R23, terminal 85 and a known good
ground?
(a) If there is no continuity, repair
wire 1435 (see schematic
Fig 2-72) or notify DS
Maintenance.
(b) If there is continuity, wire 1435 is
OK.
CONTINUITY TEST
Relay test must be performed with relay partially
installed.
NOTE
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