TM-9-2320-260-20
TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
APRIL 1995
TM-9-2320-260-20 - Page 185 of 1337
TM 9-2320-260-20
ELECTRICAL TROUBLESHOOTING
SYMPTOM INDEX
(Contd)
MALFUNCTION
TROUBLESHOOTING
NO.
MALFUNCTION
PROCEDURE
PAGE
INDICATORS, GAGES, AND WARNING SYSTEM
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
Allgages inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant temperature gage inoperative. . . . . . . . . . . . . . . . . . . . . . . .
Fuelgage inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltmeter gage inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tachograph lamps fail to operate. . . . . . . . . . . . . . . . . . . . . . . . . . .
Low air pressure warning system inoperative . . . . . . . . . . . . . . . . . .
Horn does not operate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HEATING SYSTEMS
Cold start system fails to preheat. . . . . . . . . . . . . . . . . . . . . . . . . . .
Hot water personnel heater does not operate or
doesnot operate inlowposition. . . . . . . . . . . . . . . . . . . . . . . . . .
Personnel fuel burning heater inoperative. . . . . . . . . . . . . . . . . . . . .
Heater control box light inoperative, but heater operative. . . . . . . . . .
BRAKE SYSTEM (M816, M819, M821)
2-152
2-153
2-155
2-159
2-160
2-162
2-164
2-167
2-173
2-175
2-177
40.
Vehicle rolls during winching operations. . . . . . . . . . . . . . . . . . . . . .
2-178
AUXILIARY POWER SYSTEMS
41.
Auxiliary power receptacle fails to operate
(M816, M819, and M821) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-181
42.
Vehicle fails to jump start using battery slave receptacle. . . . . . . . . . .
2-183
TRAILER CONNECTION SYSTEM
43.
Oneormore trailer lights inoperative. . . . . . . . . . . . . . . . . . . . . . . .
2-184
2-98
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