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 battery voltage at rear

3. B.O. TAILLIGHT

composite light.

LAMP DOES NOT

LIGHT

1. Turn main light switch to OFF

position.

2. Disconnect lead 24 at rear

composite light on side of

vehicle where B.O. light has

failed.

3. Turn main light switch to B.O.

MARKER or B.O. DRIVE

positions.

4. Check for battery voltage at

1. If battery voltage is present, go to

contact end of lead 24.

test 2.

2. If battery voltage is not present, go

malfunction 1, test 3, and check

front wiring harness, pin E.

Test 2. Test continuity of filament in

B.O. taillight lamp.

Check continuity between lead 24

1. If continuity is not present, replace

attached to rear composite light and

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

frame ground.

2. If continuity is present, check for

corroded contacts at lamp and on

lead 24 connection to rear wiring

harness. Reconnect lead 24.

MAL 3

TEST 1

STEP 4

B.O. MARKER

MAL 3

TEST 2

0013 00-10