TM 9-2350-256-20-1
0056 00
CORRECTIVE ACTION Continued
11. Reconnect wire 61A to APU GEN switch. Install APU control box (4), four screws (3), four lock-
washers (2), and four nuts (1) to mounting bracket. Install APU control box to foot dimmer switch and
bulkhead wiring harness to APU control box. Open air inlet doors. Disconnect bulkhead to engine
wiring harness and starter relay wiring harness from bulkhead disconnect. Place red lead of multimeter
on pin F of wire 61A 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 16. If voltage
is not present, go to step 12.
12. Reconnect bulkhead to engine wiring harness and starter relay wiring harness to bulkhead. Disconnect
wire 61A of switch panel to neutral safety switch to bulkhead wiring harness from APU control box
to foot dimmer switch and bulkhead wiring harness. Place red lead of multimeter in female connector
wire 61A 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, replace wire 61A of switch panel
to neutral safety to bulkhead wiring harness (see WP 0203 00). If voltage is not present, repair/replace
wire 61A of APU control box to foot dimmer switch and bulkhead wiring harness (see WP 0228 00).
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