TM 9-2350-247-20-1
INFRARED HEADLIGHT(S) DOES NOT OPERATE—Continued
0037 00
2Y
1. Turn MASTER SWITCH OFF.
2. Remove main harness plug (1) from beam selector switch
jack (2).
3. Turn MASTER SWITCH ON.
4. Measure voltage between main harness plug (1) pin C (3) and
ground.
5. Does multimeter read less than 17 volts?
YES
NO
GO TO CY (PAGE 0037 00-5)
3Y
1. Turn MASTER SWITCH OFF.
2. Partially remove instrument panel (WP 0256 00).
3. Remove main harness circuit 514/515 (1) and 520 (2) from IR/
BO select switch jack(3) and IR/BO select switch jack(4).
4. Measure resistance between IR/BO select switch jack (3) and IR/
BO select switch jack (4).
5. Does multimeter read 0 ohms?
YES
NO
3YN
1. Install beam selector switch and
main harness plug on beam selector
switch.
2. Replace infrared-blackout select
switch (WP 0263 00).
3. Verify no faults found.
0037 00-2
