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 286 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 4.

Disconnect connector to headlamp dimmer switch. Place red probe in pin

socket C (lead 514&515). Ground black probe. Set MASTER switch ON.

Turn vehicular light switch to BO DRIVE. If multimeter indicates about 24

volts, replace headlamp dimmer switch. Refer to page 2-584. If multimeter

indicates no voltage, repair lead 514&515 between BO-IR switch and

headlamp dimmer switch. Refer to page 2-371. Set MASTER switch OFF.

Turn vehicular light switch OFF. Connect connector to headlamp dimmer

switch.

2-260