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.

NOTE

If blackout headlight and both marker lights do not work, go to step 2.

Step 1.

Remove blackout headlight lamp (page 4-386) or marker light lamp (1) (page

4-370). Using multimeter set at RX1, put probes on contact (2) and lamp

housing (3).

a. If meter reads zero, install blackout headlight lamp (page 4-386)

or marker light lamp (page 4-370), and notify direct support

maintenance.

b. If meter does not read zero, replace lamp (l), blackout headlight

(page 4-386) or marker light (4-370).

Put headlight switch (4) in on position. Put blackout switch (5) to BLACKOUT

Step 2.

position. Open instrument panel (page 4-244). Using multimeter set at 30

vdc, put red probe on circuit breaker terminal (6) and black probe on panel (7).

If meter reads no voltage, go to step 3.

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