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 244 of 1364

TM 9-2350-238-20-1

2-12. ELECTRICAL CIRCUIT TROUBLESHOOTING (CONT).

Make sure MASTER switch is OFF before repairing electrical

circuits. Failure to observe this warning could result in injury to

personnel.

Step 2.

To access engine disconnect, remove transmission deck lid assembly.

Refer to page 2-938. Disconnect wiring harness from engine disconnect.

Place red probe in pin socket C. Ground black probe. Press headlamp

dimmer switch for high beam operation. Set MASTER switch ON. Turn

vehicular Iight switch to SER DRIVE. If multimeter indicates about 24 volts,

repair lead 17 between service headlamp and engine disconnect. Refer to

page 2-371. If multimeter indicates no voltage, repair lead 17 between

engine disconnect and headlamp dimmer switch. Refer to page 2-371. Set

MASTER switch OFF. Turn vehicular light switch OFF. Connect wiring

harness.

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