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 169 of 1207

TM 9-2320-361-20

Table 2-4. Electrical Troubleshooting (Contd).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 6. Remove lead 74 from pin A of start switch, turn accessory/ignition switch to ON position,

and check for battery voltage on contact end of lead 74.

a. If voltage is not present, disconnect lead 27 from accessory/ignition switch and check

continuity between lead 27 and its connection to lead 74.

b. If continuity is not found, replace or repair lead (para. 4-51). Reinstall lead 74 into

pin A.

Step 7. Attempt to start engine (TM 9-2320-361-10).

If starter does not engage engine, go to step 8.

Step 8. Remove lead 74 from pin A and lead 74A from pin B of start switch. Push start switch and

perform continuity check between pins A and B.

a. If continuity is not found, replace start switch (para. 4-8).

b. Check continuity of new switch before installation.

c. Reinstall lead 74A in pin B and lead 74 in pin A.

d. Push start switch. Starter should turn engine.

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