TM-9-2320-361-20

2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)

TECHNICAL MANUAL; UNIT MAINTENANCE

OCTOBER 1991

TM-9-2320-361-20 - Page 215 of 1207

TM 9-2320-361-20

Table 2-4. Electrical Troubleshooting (Contd).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Test 3. Test in-tank fuel pump fuse.

Step 1. Turn accessory/ignition switch to OFF position.

Step 2. Remove fuse holder (para. 3-23).

Step 3. With multimeter set to RX1 scale, check continuity of fuse. Attach negative lead to one side

of fuse. Touch positive lead to other side of fuse.

a. If continuity is not found, replace fuse (para. 3-23).

b. If continuity is present in fuse, go to test 4.

Test 4. Test fuel pressure delivered by in-tank fuel pump with engine stopped.

Go to table 2-2, malfunction 2, step 5.

Test 5. Test continuity of lead 654.

Step 1. Disconnect negative battery cable (para. 4-48).

Step 2. Disconnect lead 74 from start switch and disconnect lead 654 from fuel pump.

Step 3. Set multimeter to RX1.

Step 4. Connect negative and positive leads of multimeter between lead 74 and lead 654.

a. If continuity is not present, replace or repair leads 74 and 654.

b. If continuity is present, reconnect leads 74 and 654 and recheck fuel pump for proper

operation.

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