TM 9-2350-247-20-1
SERVICE TAILLIGHT DOES NOT OPERATE
0041 00
INITIAL SETUP:
Maintenance Level
Unit
Tools and Special Tools
General Mechanics Tool Kit (WP 0541 00, Item 57)
Multimeter (WP 0541 00, Item 29)
Personnel Required
Unit Mechanic
References
See your -10
Equipment Condition
Engine stopped (see your -10)
Carrier blocked (see your -10)
NOTE
M548A1 and M548A3 troubleshooting procedures are the same. M548A1 procedure i s shown.
T
1. Operate exterior lights in all positions (see your -10).
2. Do any exterior lights operate in any light switch positions?
YES
NO
TN
1. Go to no exterior lights operate
(WP 0034 00).
Y
1. Turn main light switch on light switch to SER DRIVE.
2. Remove main harness circuit 21 plug (1) from left taillight
jack (2).
3. Measure voltage between main harness circuit 21 plug (1) and
ground.
4. Does multimeter read less than 17 volts?
YES
NO
YN
1. Replace service taillight bulb
(WP 0278 00).
2. Verify no faults found.
0041 00-1