FUEL FILTER HEATER CIRCUIT. (Cont) - TM-9-2350-238-20-10331

TM 9-2350-238-20-1

Step 2.

Disconnect leads 403A and 403B from fuel filter heater switch. Connect

multimeter to fuel filter heater switch leads. Set fuel filter heater switch ON.

If multimeter indicates 0 ohms, troubleshoot battery power circuit and

master relay circuit. Refer to page 2-82 and page 2-90. If multimeter

indicates infinity, replace fuel filter heater switch. Refer to page 2-1029.

Set fuel filter heater switch OFF. Connect leads.

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

Step 3.

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

MASTER switch ON. If multimeter indicates about 24 volts, go to step 5. If

multimeter indicates no voltage, go to step 4. Set MASTER switch OFF.

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