TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
3.
ENGINE HIGH IDLE DOES NOT OPERATE (continued).
4.
TEST OPTIONS
KNOWN INFO
Continuity Test.
Error Code, EC 09.
Is there continuity on
Engine high idle operates
jumper wire between
REASON FOR QUESTION
at remote locations.
PTO ENGAGE switch and
Cab HIGH IDLE switch
the cab HIGH IDLE
Cab HIGH IDLE switch
OK.
switch (terminal 2)?
gets its power supply
from PTO ENGAGE
POSSIBLE PROBLEMS
switch. If the wire is
damaged, the engine
PTO ENGAGE switch to
high idle will not operate
cab HIGH IDLE switch
from cab location.
jumper wire faulty.
Repair wire (see
schematic,
NO
YES
Fault not corrected.
Notify supervisor.
4-52
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