BLACKOUT DRIVE HEADLAMP CIRCUIT (VEHICULAR LIGHT SWITCH). (Cont)

TM 9-2350-238-20-1

2-12. ELECTRICAL CIRCUIT TROUBLESHOOTING (CONT).

Set MASTER switch OFF. Disconnect connector from vehicular light switch.

Step 1.

Place red probe on pin F of vehicular light switch. Place black probe on pin

D. If multimeter indicates 0 ohms, go to step 2. If multimeter indicates

infinity, replace vehicular light switch. Refer to page 2-566. Connect

connector to vehicular light switch.

Make sure MASTER switch is OFF before repairing electrical

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

personnel.

Disconnect lead 19 from BO-IR switch. Place red probe in BO-IR switch

Step 2.

connector. Ground black probe. Set MASTER switch ON. If multimeter

indicates about 24 volts, repair lead 19. Refer to page 2-371. If multimeter

indicates no voltage, go to step 3. Set MASTER switch OFF. Connect

lead.

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