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TM 9-2320-364-20-3
2-2795
(1) Remove 15 screws and ECB
covers.
(2) Set multimeter select switch to
ohms.
(3) Connect multimeter positive (+)
lead to relay R22, terminal 30.
(4) Connect negative multimeter (–)
lead to relay R22, terminal 87.
(5) Turn ON ENGINE switch
(TM 9-2320-364-10).
(6) Set crane POWER switch to ON
position.
(7) Press the HIGH IDLE switch to
LATCH position and release.
(a) If there is no continuity,
perform Steps (8) and (9)
below and go to Step 12 of this
Fault.
(b) If there is continuity, perform
Steps (8) through (10) below
and go to DDEC II
troubleshooting, Fault 4.
(8) Set crane POWER switch to OFF
position.
(9) Turn OFF ENGINE switch.
(10) Install ECB covers with 15 screws.
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.
Circuit breakers CB5, CB6, CB12, CB20,
CB23 and relays R3, R13 - R19, R26, R28,
and R33 are always electrically hot and can
cause severe injury to personnel. Care must
exercised when working under the electrical
circuit board cover.
Relay test must be performed with relay
partially removed.
Use of insulated test leads are required
for Steps (3) and (4).
NOTE
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