TM 9-2350-247-20-1
BLACKOUT DRIVE LIGHT DOES NOT WORK
0035 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)
IR/BO select on BO (see your -10)
NOTE
M548A1 and M548A3 troubleshooting procedures are the same. M548A1 procedure is 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. Remove main harness plug (1) from BO DRIVE light jack (2).
2. Measure resistance between BO DRIVE light jack (2) and
ground.
3. Does multimeter read less than infinity?
YES
NO
YN
1. Install main harness plug on BO
DRIVE light.
2. Replace blackout headlight lamp unit
(WP 0275 00).
3. Verify no faults found.
2Y
1. Check and see if multimeter read more than 0 ohms.
2. Does multimeter read more than 0 ohms?
YES
NO
2YN
1. Replace blackout headlight
(WP 0275 00).
2. Verify no faults found.
0035 00-1
