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TM 9-2320-364-20-3
2-2790
19. CRANE HIGH IDLE NOT WORKING (CONT).
9.
Is there continuity on HIGH
IDLE switch green jumper
wire?
Repair green
jumper wire (see
schematic Fig 2-58).
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 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.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #91.
If green jumper wire is loose,
faulty or shorted to ground, 22
to 28 VDC will not be input to
terminal 17.
WARNING
Read WARNING
on Page 2-2791
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