DRIVER'S HEATER FUEL PUMP CIRCUIT.

TM 9-2350-238-20-1

BH. DRIVER'S HEATER FUEL PUMP CIRCUIT.

Make sure MASTER switch is OFF before repairing

electrical circuits. Failure to observe this warning

could result in injury to personnel.

Step 1.

Disconnect wiring harness from driver's heater control box. Place red probe

on pin A (lead 402 R). Ground black probe. Set MASTER switch ON. Set

START-OFF-RUN switch to START. If multimeter indicates about 24 volts,

go to step 2. If multimeter indicates no voltage, replace driver's heater

control box. Refer to page 2-1029. Set MASTER switch OFF. Set START-

OFF-RUN switch OFF. Connect wiring harness.

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