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TM 9-2320-364-20-3
2-2808
19. CRANE HIGH IDLE NOT WORKING (CONT).
18.
Is there continuity on wire
1737 between connector
MC29, terminal A and relay
R22, terminal 86?
Repair wire 1737
(see schematic
Fig 2-58) or notify DS
Maintenance.
Verify repair, go to
Step 19 of this Fault.
YES
NO
Crane operates.
Red wire from terminal 17 to
relay OK.
Green wire from relay to
ground OK.
Black wire from terminal 3 to
relay OK.
Relay OK.
Blue wire from relay to
diode OK.
Diode OK.
Red wire from diode to HIGH
IDLE switch OK.
Green jumper wire on HIGH
IDLE switch OK.
HIGH IDLE switch OK.
Wire 231 OK.
Relay R22 OK.
Black wire from power switch
to HIGH IDLE switch OK.
HIGH IDLE switch OK.
Green wire from HIGH IDLE
switch to terminal 17 OK.
White wire from terminal 17 to
crane connector OK.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Continuity test.
STE/ICE-R#91.
If wire 1737 is loose, faulty, or
shorted to ground, 22 to 28
VDC will not be input to relay
R22.
WARNING
Wire 1737 faulty.
Read WARNING
on Page 2-2809
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