Table 1. Indicator, Gauges, and Warning System Troubleshooting - continued

TM 9-2320-361-24-1

0014 00

INDICATORS, GAUGES, AND WARNING SYSTEM TROUBLESHOOTING (Contd)

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

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Test 1. Check fuel pump operation.

6. IN-TANK FUEL PUMP

1. Turn power accessory switch

INOPERATIVE

to ON position.

2. Listen or feel for fuel pump

humming or vibration at top

of pump.

3. If vibration can be felt or

heard, go to test 4.

4. If no vibration can be felt or

heard, go to test 2.

Test 2. Test input voltage and ground

to fuel pump.

1. Remove lead 654 from fuel

pump.

2. Set multimeter to a voltage

scale that will measure 24 VDC.

3. Connect positive lead of

1. If battery voltage is not present, go

multimeter to lead 654 and

to test 5.

negative lead of multimeter to 2. If battery voltage is present, go to

ground lead 79.

test 3.

TEST 2

STEP 3

654

FUEL PUMP

0014 00-11