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 166 of 1207

TM 9-2320-361-20

Table 2-4. Electrical Troubleshooting (Contd).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Test 2. Test for battery voltage at lug D of magnetic starter relay.

Step 1.

Step 2.

Step 3.

Step 4.

Step 5.

With accessory/ignition switch ON, push start switch and at same time check for battery

voltage at lug D on starter relay.

a. If 19 Vdc are not present, go to test 4.

b. If voltage is present, go to step 2.

Set multimeter to RX1 scale. Check continuity between lug C on starter relay and ground.

a. If continuity is 1 ohm or less, go to step 3.

b. If continuity is greater than 1 ohm, disconnect ground lead at lug C. Repair or replace

ground lead (para. 4-51). Go to test 1, step 1.

Check for battery voltage at lug B of starter relay with start switch PUSHED.

a. If voltage is present, go to step 5.

b. If voltage is not present, go to step 4.

Check for battery voltage at lug A on starter relay. Voltage should always be present.

If voltage is not present, replace or repair lead 14 (para. 4-51). Go to test 1, step 1

and retest.

Check continuity of lead 214 between lug B on starter relay and pin 1 on starter solenoid.

If continuity is not present, replace or repair lead 214 (para. 4-51). Clean connections

before reinstalling lead. Ensure all connections are tight. Go to test 1, step 1 and retest.

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