TM 9-2320-273-20
Section lV TROUBLESHOOTING SYMPTOM INDEX
3-8. INTRODUCTION.
Detailed troubleshooting procedures are provided in chapters 4 thru 12 of this manual. The proce-
dures are arranged by subsystem categories under Malfunction Symptoms. The following composite
Malfunction Symptom Index provides a cross reference to the troubleshooting procedures contained
in the other chapters.
Table 3-2. Composite Troubleshooting Symptom Index
Troubleshooting Procedures
Malfunction
Table
Number
BACKUP LAMPS.
Backup lamp(s) inoperative.
5-12
1
BATTERY SYSTEM.
All electrical systems are weak.
5-1
1
Engine fails to crank or cranks slowly.
5-1
2
Batteries do not hold a charge.
5-1
3
BLACKOUT LIGHTING SYSTEM.
All blackout lamps inoperative.
5-13
1
One blackout marker, headlamp, tail lamp, or
stop lamp inoperative.
5-13
2
Trailer blackout lamps inoperative.
5-13
3
CHARGINGCIRCUIT .
Batteries are being undercharged or overcharged.
5-5
1
COMPRESSED AIR AND BRAKE SYSTEMS.
Insufficient air pressure.
9-1
1
Excessive system pressure indicated.
9-1
2
Park brakes will not release.
9-1
3
Trailer brakes will not release.
9-1
4
Service brakes will not release (one wheel only).
9-1
5
Service brakes will not apply.
9-1
6
3-11
