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 217 of 1176

TM 9-2320-361-24-1

0013 00

0013 00-5

LIGHTING AND WIPER SYSTEM TROUBLESHOOTING (Contd)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

2. PARK LAMP DOES

NOT LIGHT

Test 1. Test battery voltage at front

composite light.

1. Place auxiliary light switch

lever in OFF position.

2. Disconnect lead 491 at rear of

front composite light.

3. Turn auxiliary light switch to

PARK position.

4. Check for battery voltage on

contact end of lead 491.

Test 2. Test continuity of filament in

park lamp.

Set multimeter to RX 1 scale. Check

continuity between frame ground and

lead 491 connected to front composite

light.

1. If battery voltage is present, go to

test 2.

2. If battery voltage is not present, go

to WP 0013 00, table 1,

malfunction 1, test 3, and test

lighting system harness connector,

pin L.

1. If continuity is not present, replace

park lamp (WP 0122 00).

2. If continuity is present, check for

corroded contacts at lamp and lead

491 connections to front wiring

harness. Reconnect lead 491.

MAL 2

TEST 2

MAL 2

TEST 1

STEP 4

20

20

460

460

491

491

PARK

LAMP

Table 1. Lighting System Troubleshooting Procedures (Contd).