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TM 9-2320-364-20-3
2-2788
19. CRANE HIGH IDLE NOT WORKING (CONT).
8.
Is there continuity on red wire
between diode and HIGH
IDLE switch?
Repair red wire
(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
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Continuity test.
STE/ICE-R #91.
If red wire is loose, faulty, or
shorted to ground, 22 to 28
VDC will not be input to HIGH
IDLE switch.
WARNING
Red wire from diode to HIGH
IDLE switch faulty.
Green jumper wire on HIGH
IDLE switch faulty.
HIGH IDLE switch faulty.
Wire 231 faulty.
Relay R22 faulty.
Black wire from power switch to
HIGH IDLE switch faulty.
HIGH IDLE switch faulty.
Green wire from HIGH IDLE
switch to terminal 17 faulty.
White wire from terminal 17 to
crane connector faulty.
Wire 1737 faulty.
Read WARNING
on Page 2-2789
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