WINDSHIELD DEFROSTER CIRCUIT. (Cont) - TM-9-2350-238-20-10378

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 6.

Disconnect lead 639 from windshield defroster. Place red probe in lead

639. Ground black probe. Set MASTER switch ON. Set windshield

defroster switch ON. If multimeter indicates about 24 volts, go to step 7. If

multimeter indicates no voltage, repair lead 639 between windshield

defroster and windshield defroster disconnect. Refer to page 2-371. Set

MASTER switch OFF. Set windshield defroster switch OFF. Connect lead.

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