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 206 of 1207

TM 9-2320-361-20

Table 2-4. Electrical Troubleshooting (Contd).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

INDICATORS, GAGES, AND WARNING SYSTEM

29. ALL GAGES INOPERATIVE

NOTE

If STE/ICE is available, perform NG31 - gage test (chapter 2,

section VII).

Test 1. Test starter for proper operation.

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

Step 2. Push start button.

a. If starter cranks engine, go to test 2.

b. If starter does not crank engine, go to malfunction 2 and troubleshoot starter circuit.

Test 2. If problem is still present, test instrument cluster voltage.

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

Step 2. Remove instrument cluster panel (para. 4-10).

Step 3. Connect battery ground cable (para. 4-48).

Step 4. Connect jumper wire from instrument panel to a good frame ground.

Step 5. Disconnect lead 27 from the temperature gage.

Step 6. Use multimeter or 24-volt test lamp to check voltage on contact end of lead 27 at gage.

a. Place positive lead on contact end of lead 27.

b. Place negative lead on frame ground.

c. If battery voltage is present, go to malfunction 30 for temperature gage.

Step 7. Set multimeter to RX1.

Step 8. Check continuity of lead 27.

a. Disconnect lead 27 from front wiring harness.

b. If continuity is not present, replace or repair lead 27 (para. 4-51).

END OF TESTING!

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