TM 9-2350-256-20-1
0059 00
CORRECTIVE ACTION Continued
5.
Disconnect APU control box to foot dimmer switch and bulkhead wiring harness from APU control
box. Remove four nuts (1), four lockwashers (2), and four screws (3), and release APU control box
(4) from mounting bracket. Remove four screws (5) and four lockwashers (6), and release rear panel
(7) from APU control box. Reconnect APU control box to foot dimmer switch and bulkhead wiring
harness to APU control box.
Disconnect wire 65 from START switch. Place red lead of multimeter on terminal of START switch
and black lead to ground. Turn MASTER, PREHEAT and APU START switches ON and check for
voltage. Turn MASTER, PREHEAT and APU START switches OFF. If voltage is not present, go to
step 6. If voltage is present, repair/replace wire 65 of APU control box wiring harness (see WP 0438
00).
0059 00-5
