TM-9-2350-238-20-1

HULL AND RELATED COMPONENTS RECOVERY VEHICLE, FULL TRACKED: LIGHT, ARMORED, M578

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL

MAY 1994

TM-9-2350-238-20-1 - Page 368 of 1364

TM 9-2350-238-20-1

2-12. ELECTRICAL CIRCUIT TROUBLESHOOTING (CONT).

Step 4.

I

Make sure MASTER switch is OFF before repairing

electrical circuits. Failure to observe this warning

could result in injury to personnel.

Place red probe on pin E (lead 410). Place black probe on pin C (lead

401 ). Set MASTER switch ON. Set START-OFF-RUN switch to RUN. If

multimeter indicates 0 ohms, go to step 5. If multimeter indicates infinity,

replace driver’s heater control box. Refer to page 2-1029. Set MASTER

switch OFF. Set START-OFF-RUN switch OFF. Connect wiring harness.

Step

5.

Place red probe on pin E (lead 410). Place black probe on pin B (lead

402). Set HI-LO switch to Hl. If multimeter indicates 0 ohms, go to step 6.

If multimeter indicates infinity, replace driver's heater control box. Refer to

page 2-1029. Connect wiring harness.

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