TM 9-2350-256-20-1
0061 00
CORRECTIVE ACTION Continued
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 on 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).
10. Reconnect wire 421 to APU FUEL SHUTOFF switch. Disconnect connector from LOW OIL PRESS
lamp. Place red lead of multimeter in wire 27 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 11. If voltage is not present, repair/replace wire 421/27
of APU control box wiring harness (see WP 0438 00).
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