Table 2. Blackout Lights (B.O.) Troubleshooting Procedures - continued

TM 9-2320-361-24-1

0013 00

LIGHTING AND WIPER SYSTEM TROUBLESHOOTING (Contd)

Table 2. Blackout Lights (B.O.) Troubleshooting Procedures (Contd).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Test 1. Test for battery voltage at rear

4. B.O. STOPLIGHT

composite light.

LAMP DOES NOT

LIGHT

1. Turn main light switch to OFF

position.

2. Disconnect lead 23 at rear

composite light on side of

vehicle where B.O. stoplight is

malfunctioning.

3. Turn main light switch to B.O.

MARKER or B.O. DRIVE

positions.

4. Depress brake pedal and check

1. If battery voltage is present, go to

for battery voltage on contact

test 2.

end of lead 23.

2. If battery voltage is not present, go

malfunction 1, test 3, and check

front wiring harness pin N.

Test 2. Test continuity of filament in

B.O. stoplight lamp.

Check for continuity between lead 23

1. If continuity is not present, replace

attached to rear composite light and

B.O. taillight lamp (WP 0125 00).

frame ground.

2. If continuity is present, check for

corroded contacts at lamp and on

lead 23 connection to rear wiring

harness. Reconnect lead 23.

MAL 3

TEST 1

STEP 4

B.O. MARKER

MAL 3

TEST 2

0013 00-11