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 4.

Disconnect lead 402R from driver's heater fuel pump. 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, replace

driver's heater fuel pump. Refer to page 2-1016. If multimeter indicates no

voltage, repair lead 402R between wiring harness disconnect and driver's

heater fuel pump disconnect. Refer to page 2-371. Set MASTER switch

OFF. Set START-OFF-RUN switch OFF. Connect lead.

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