TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
3.
ENGINE HIGH IDLE DOES NOT OPERATE (continued).
2.
TEST OPTIONS
KNOWN INFO
Error Code, EC 09.
Does the high idle
Visual inspection.
Engine high idle operates
operate with only the
REASON FOR QUESTION
at either cab or remote
remote control (cab
location.
control is inoperative)?
To isolate the location
in the circuit where fault
POSSIBLE PROBLEMS
exists.
Cab HIGH IDLE switch
faulty.
PTO ENGAGE switch to
cab HIGH IDLE switch
jumper wire faulty.
Remote control
Wire no. 840 faulty.
inoperative; go to
Jumper wire no. 516
NO
step 8.
faulty.
Wire no. 516 faulty.
Remote linking harness
faulty.
Remote control unit
YES
faulty.
Remote control cable
faulty.
Cab control box faulty.
Linking harness faulty.
Junction box
harness faulty.
Cab control box wiring
faulty.
4--48
4
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