TM 9-2350-256-20-1
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CORRECTIVE ACTION Continued
8.
Reconnect wire 419 to APU FUEL SHUTOFF switch side of 15 A circuit breaker. Disconnect wire
419 from circuit breaker side of APU FUEL SHUTOFF switch. Place red lead of multimeter in wire
419 and black lead to ground. Turn MASTER switch on and check for voltage. Turn MASTER switch
OFF. If voltage is present, go to step 9. If voltage is not present, repair/replace wire 419 of APU control
box wiring harness (see WP 0438 00).
9.
Reconnect wire 419 to circuit breaker side of APU FUEL SHUTOFF switch. Disconnect wire 421 from
APU FUEL SHUTOFF switch. Place red lead of multimeter in terminal of APU FUEL SHUTOFF
switch and black lead to ground. Turn MASTER and APU FUEL SHUTOFF switches ON and check
for voltage. Turn MASTER and APU FUEL SHUTOFF switches OFF. If voltage is present, go to step
10. If voltage is not present, replace APU FUEL SHUTOFF switch (see WP 0438 00).
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