AIR BOX HEATER CIRCUIT. (Cont) - TM-9-2350-238-20-10319

TM 9-2350-283-20-1

Step 2.

Disconnect lead 10 from 15A circuit breaker near driver's seat. Connect

multimeter to receptacles of 15A circuit breaker and connector. If multim-

eter indicates 0 ohms, go to step 3. If multimeter indicates infinity, replace

15A circuit breaker, refer to page 2-564; or connector, refer to page 2-371.

Connect leads 76 and 10 to 15A circuit breaker and connector.

Make sure MASTER switch is OFF before repairing

electrical circuits. Failure to observe this warning

could result in injury to personnel.

Disconnect lead 76 from PUMP AND HEATER IGNITER switch. Place red

Step 3.

probe in lead 76. Ground black probe. Set MASTER switch ON. If mul-

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

voltage, repair lead 76 between PUMP AND HEATER IGNITER switch and

15A circuit breaker. Refer to page 2-371. Set MASTER switch OFF. Con-

nect lead.

2-293