TM 9-2350-277-20-1
DOME LIGHT MALFUNCTION (M577A3 ONLY)—Continued
0040 00
4Y
1. Turn MASTER SWITCH to OFF.
2. Install circuit 38E and 38A plugs on rear dome light.
3. Remove eight nuts (1), washers (2), and screws (3) from master
switch panel (4). Pull panel away from distribution box.
4. Remove circuits 10 (5) and 38A (6) plugs from circuit breaker (7)
and front dome light switch (8).
5. Install a jumper wire between circuit 10 and 38A plugs.
6. Turn MASTER SWITCH to ON.
7. Operate rear dome light switch.
8. Do blackout dome lights still malfunction?
YES
NO
GO TO EY (PAGE 0040 00-5)
5Y
1. Remove jumper wire from circuits 10 and 38A plugs.
2. Measure voltage at circuit 10 plug.
3. Does multimeter read 17 volts or more?
YES
NO
5YN
1. Turn MASTER SWITCH to OFF.
2. Repair/replace wiring harness
10917788 (WP 0382 00).
3. Verify no faults found.
6Y
1. Turn MASTER SWITCH to OFF.
2. Repair wiring harness circuit 38A (WP 0382 00).
3. Verify no fats found.
0040 00-3
