TM-9-2320-361-24-1

2-1/2 TON, 6X6, M44A2 SERIES TRUCKS

TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2

AUGUST 2006

TM-9-2320-361-24-1 - Page 214 of 1176

TM 9-2320-361-24-1

0013 00

0013 00-2

LIGHTING AND WIPER SYSTEM TROUBLESHOOTING (Contd)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. HEADLIGHT DOES

NOT OPERATE ON

LOW OR HIGH

BEAM, OR BOTH

HEADLIGHTS

INOPERATIVE

(Contd)

3. Turn main light switch to OFF

position.

4. Disconnect leads 17 (high

beam), 18 (low beam), and 91

(ground) behind headlamp.

5. Place main light switch lever

in SERVICE DRIVE position.

6. Check low beam and high

beam voltage. Push dimmer

switch to LOW position. Check

for battery voltage between

lead 18 and lead 91.

7. Push dimmer switch to HIGH

position. Check for battery

voltage between lead 17 and

lead 91.

8. Check continuity of low beam

filament. Place multimeter

leads between headlamp

connectors 18 and 91 at rear of

lamp.

9. Check continuity of high beam

filament. Place multimeter

leads between headlamp

connectors 17 and 91 at rear

of headlamp.

If voltage is present, go to step 7. If

voltage is not present, go to

test 2.

If voltage is present, go to step 8.

If continuity is not present,

replace sealed beam headlamp

(WP 0120 00).

If continuity is not present,

replace sealed beam headlamp

(WP 0120 00).

MAL 1

TEST 1

STEP 8

MAL 1

TEST 1

STEP 9

17

91

18

MAL 1

TEST 1

STEP 6

17

91

18

Table 1. Lighting System Troubleshooting Procedures (Contd).