TM 9-2350-247-20-1
SERVICE AND/OR BLACKOUT STOPLIGHTS MALFUNCTION
0038 00
INITIAL SETUP:
Maintenance Level
Unit
Tools and Special Tools
General Mechanic’s 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. M548A1S procedure is shown.
T
1. Operate all exterior lights (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. Check to see if service stop and BO stoplights both malfunction.
2. Do service stop and BO stoplights both malfunction?
YES
NO
GO TO BY (PAGE 0038 00-3)
2Y
1. Check stoplight switch adjustment (WP 0274 00).
2. Is brake switch in proper adjustment?
YES
NO
2YN
1. Adjust stoplight switch
(WP 0274 00).
2. Verify no faults found.
0038 00-1
