TM 9-2350-256-20-1
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CORRECTIVE ACTION Continued
11. Reconnect bulkhead to APU, master relay, and rigger's lights wiring harness to APU engine disconnect.
Disconnect APU control box to foot dimmer switch and bulkhead wiring harness from APU control
box. Place red lead of multimeter in socket H of wire C and black lead to ground. Turn MASTER
and APU GEN switches ON and check for voltage. Turn MASTER and APU GEN switches OFF. If
voltage is present, go to step 12. If voltage is not present, go to step 17.
12. Remove four nuts (1), four lockwashers (2), four screws (3), and APU control box (4) from mounting
brackets. Place a jumper from pin H to socket H. Place red lead of multimeter on pin L of wire J
and black lead to ground. Turn MASTER and APU GEN switches on and check for voltage. Turn
MASTER and APU GEN switches OFF. If voltage is present, go to step 15. If voltage is not present,
go to step 16.
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