DRIVER'S HEATER FUEL PUMP CIRCUIT. (Cont)

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 2.

Disconnect lead 402R from driver's heater control box wiring harness.

Place red probe in lead 402R. Ground black probe. Set MASTER switch

ON. Set START-OFF-RUN switch to START. If multimeter indicates about

24 volts, go to step 3. If multimeter indicates no voltage, repair lead 402R

between disconnect and driver's heater control box wiring harness. Refer to

page 2-371. Set MASTER switch OFF. Set START-OFF-RUN switch OFF.

Connect lead.

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