TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
3.
ENGINE HIGH IDLE DOES NOT OPERATE (MODEL A ONLY) (continued).
12.
KNOWN INFO
TEST OPTIONS
Engine high idle operates
Voltage Test.
Are 2228 volts mea-
from cab switch.
sured at cab control
REASON FOR QUESTION
Engine high idle does not
box connector (J2),
operate from either RH or
position N?
The remote control unit
LH remote locations.
receives its power source
Remote control unit OK.
from the cab control box.
Remote control cable
The remote control will
OK.
not operate if there is no
voltage supply at position
POSSIBLE PROBLEMS
N.
Cab control box faulty.
Linking harness faulty.
Junction box
harness faulty.
Cab control box wiring
faulty.
Repair cab control
NO
box (para 4-71).
YES
4-68
Change 1
