TM 9-2350-256-20-1
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CORRECTIVE ACTION Continued
9.
Reconnect bulkhead to APU, master relay, and rigger's lights wiring harness to switching box relay.
Open front grille doors (TM 9-2350-256-10). Disconnect bulkhead to APU, master relay, and rigger's
lights wiring harness from APU engine disconnect. Place red lead of multimeter on pin H of wire
478A. Turn MASTER and APU GEN switches ON and check for voltage. Turn MASTER and APU
GEN switches OFF. If voltage is not present, repair/replace wire 478A of bulkhead to APU, master
relay, and rigger's lights wiring harness (see WP 0225 00). If voltage is present, go to step 10.
10. Place red lead of multimeter in socket G of wire 62 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 11. If voltage is not present, repair/replace wire 62 of bulkhead to APU, master
relay, and rigger's lights wiring harness (see WP 0225 00).
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