TM 9-2350-277-20-1
SERVICE HEADLIGHTS DON’T WORK—Continued
0031 00
A4Y
1. Turn MASTER SWITCH to OFF.
2. Install harness 8763491 circuit 17 (high beam) or 18 (low beam)
on service headlight.
3. Faulty harness 12349881 circuit 17 or 18 between bulkhead and
dimmer switch. Beyond unit maintenance repair.
4. Notify supervisor.
BY
1. Measure resistance between dimmer switch jack (1) pins G (2)
and E (3) and between pins G (2) and F (4). Use multimeter.
Multimeter should read 0 ohms once and infinity once.
2. Click dimmer switch and check continuity between dimmer
switch jack (1) pins G (2) and E (3) and between pins G (2) and F
(4). Multimeter should read infinity once and 0 ohms once.
3. Is dimmer switch working properly?
YES
NO
BYN
1. Replace headlight high beam selector
switch (WP 0333 00).
2. Verify no faults found.
B2Y
1. Faulty harness 12349881 circuit 18 (low beam) or circuit 17 (high
beam). Beyond unit maintenance repair.
2. Notify supervisor.
0031 00-4
