FUEL FILTER HEATER CIRCUIT. (Cont) - TM-9-2350-238-20-10336

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.

Disconnect fuel filter heater ground lead. Place red probe in ground lead

Step 9.

terminal. Ground black probe. Set MASTER switch ON. Set fuel filter

heater switch ON. If multimeter indicates about 24 volts, repair ground lead.

Refer to page 2-371. If multimeter indicates no voltage, repair fuel filter

heater. Refer to page 2-1025. Set MASTER switch OFF. Set fuel filter

heater switch OFF. Connect lead.

Step 10.

Disconnect lead 403A from 15A circuit breaker (near driver's seat). Place

red probe in 15A circuit breaker receptacle. Ground black probe. Set

MASTER switch ON. If multimeter indicates about 24 volts, go to step 12.

If multimeter indicates no voltage, go to step 11. Set MASTER switch OFF.

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