BLACKOUT HEADLIGHT OR MARKER LIGHT DOES NOT WORK

TM 9-2320-270-20-1

TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

25. BLACKOUT HEADLIGHT OR MARKER LIGHT DOES NOT WORK - CONTINUED.

Using multimeter set at 30 vdc, put red probe on blackout switch terminal (1) and

Step 3.

black probe on panel (2).

If meter reads no voltage, go to step 5.

Using multimeter set at 30 vdc, put red probe on circuit breaker terminal (3) and

Step 4.

black probe on panel (2).

a. If meter reads no voltage, close instrument panel (page 4-244) and

notify direct support maintenance.

b. If meter reads voltage, replace BLACKOUT LT circuit breaker

Using multimeter set at 30 vdc, put red probe on blackout switch terminal (4) and

Step 5.

black probe on panel (2).

a. If meter reads no voltage, do steps 8 and 9 under BOTH HEADLIGHTS

b. If meter reads voltage, put light switch in OFF position, replace

blackout light switch (page 4-298).

c. If blackout headlight or marker light still do not work,

notify direct support maintenance.

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