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 248 of 1176

TM 9-2320-361-24-1

0014 00

0014 00-12

INDICATORS, GAUGES, AND WARNING SYSTEM TROUBLESHOOTING (Contd)

Table 1. Indicator, Gauges, and Warning System Troubleshooting (Contd).

6. IN-TANK FUEL PUMP

INOPERATIVE

(Contd)

Test 3. Test in-tank fuel pump fuse.

1. Turn power accessory switch

to OFF position.

2. Remove fuse holder

(WP 0059 00).

3. With multimeter set to RX 1

scale, check continuity of fuse.

Attach negative lead to one

side of fuse. Touch positive

lead to other side of fuse.

Test 4. Test fuel pressure delivered by

in-tank fuel pump with

engine stopped. Go to

WP 0006 00, Table 1,

malfunction 2, step 5.

Test 5. Test continuity of lead 654.

1. Disconnect negative battery

cable (WP 0126 00).

2. Disconnect lead 74 from start

switch and disconnect lead

654 from fuel pump.

3. Set multimeter to RX 1 scale.

4. Connect negative and positive

leads of multimeter between

lead 74 and lead 654.

1. If continuity is not found, replace

fuse (WP 0059 00).

2. If continuity is present in fuse, go

to test 4.

1. If continuity is not present, repair

or replace leads 74 and 654.

2. If continuity is present, reconnect

leads 74 and 654 and recheck fuel

pump for proper operation.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION