TM 9-2350-256-20-1
0060 00
CORRECTIVE ACTION Continued
4.
Remove four nuts (6), four lockwashers (7), four screws (8), and release APU control box (9) from
mounting bracket. Place a jumper wire from pin N to socket N. Place red lead of multimeter on pin F
of wire 421 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 9. If voltage is not present, go to step 5.
5.
Remove four screws (10), four lockwashers (11), and release rear panel (12) from APU control box (9).
Reconnect APU control box to foot dimmer switch and bulkhead wiring harness to APU control box.
Disconnect wire 419 from 15 A circuit breaker. 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 6. If voltage is not present, repair/replace wire 419 of APU control box wiring
harness from connector to circuit breaker (see WP 0438 00).
0060 00-5
