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 254 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 1.

Remove marker assembly from left stoplight-taillight. Refer to page 2-614.

Set MASTER switch ON. Set panel light switch ON. Unlock main light

switch and place in blackout drive position. Place blackout-infrared

selection switch in blackout position. Place red probe in socket. Ground

black probe. If multimeter indicates about 24 volts, replace marker

assembly. If multimeter indicates no voltage, set MASTER switch OFF,

install marker assembly and go to step 2.

Step 2.

Disconnect lead 22 from left stoplight-taillight. Place red probe in lead 22.

Ground black probe. Set MASTER switch ON. Turn vehicular light switch

to STOPLIGHT. Apply brakes. If multimeter indicates about 24 volts, repair

left stoplight-taillight. Refer to page 2-614. If multimeter indicates no

voltage, connect lead 22 and go to step 3. Set MASTER switch OFF. Turn

vehicular light switch OFF.

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