TM 9-2320-260-20
ELECTRICAL TROUBLESHOOTING
SYMPTOM INDEX (Contd)
TROUBLESHOOTING
MALFUNCTION
PROCEDURE
MALFUNCTION
NO.
PAGE
INDICATORS, GAGES, AND WARNING SYSTEM
Allgages inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
.
29.
Coolant temperature gage inoperative. . . . . . . . . . . . . . . . . . . . . .
.
.
30.
Fuelgage inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
.
31.
Voltmeter gage inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
.
32.
Tachograph lamps fail to operate. . . . . . . . . . . . . . . . . . . . . . . . .
.
.
33.
Low air pressure warning system inoperative . . . . . . . . . . . . . . . .
.
.
34.
Horn does not operate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
.
35.
HEATING SYSTEMS
Cold start system fails to preheat. . . . . . . . . . . . . . . . . . . . . . . . . . .
36.
Hot water personnel heater does not operate or
37.
doesnot operate inlowposition. . . . . . . . . . . . . . . . . . . . . . . . . .
Personnel fuel burning heater inoperative. . . . . . . . . . . . . . . . . . . . .
38.
Heater control box light inoperative, but heater operative. . . . . . . . . .
39.
BRAKE SYSTEM (M816, M819, M821)
Vehicle rolls during winching operations. . . . . . . . . . . . . . . . . . . . . .
40.
AUXILIARY POWER SYSTEMS
Auxiliary power receptacle fails to operate
41.
(M816, M819, and M821) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vehicle fails to jump start using battery slave receptacle. . . . . . . . . . .
42.
TRAILER CONNECTION SYSTEM
Oneormore trailer lights inoperative. . . . . . . . . . . . . . . . . . . . . . . .
43.
2-98
