WINDSHIELD DEFROSTER CIRCUIT. (Cont) - TM-9-2350-238-20-10376

TM 9-2350-238-20-1

2-12. ELECTRICAL CIRCUIT TROUBLESHOOTING (CONT).

Step 2.

Remove lead 10 from 15A circuit breaker. Connect multimeter to 15A

circuit breaker receptacles. If multimeter indicates 0 ohms, go to step 3. If

multimeter indicates infinity, replace 15A circuit breaker. Refer to page

2-584. Connect leads.

Make sure MASTER switch is OFF before repairing

electrical circuits. Failure to observe this warning

could result in injury to personnel.

Step 3.

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

lead 639. Ground black probe. Set MASTER switch ON. If multimeter

indicates about 24 volts, go to step 4. If multimeter indicates no voltage,

repair lead 639 between 15A circuit breaker and windshield defroster switch.

Refer to page 2-371. Set MASTER switch OFF. Connect lead.

2-350