TM 9-2350-256-20-1
0059 00
CORRECTIVE ACTION Continued
10. Reconnect APU control box to foot dimmer switch and bulkhead wiring harness to APU control box.
Disconnect wire 487 from 15 A circuit breaker. Place red lead of multimeter on terminal of 15 A circuit
breaker and black lead to ground. Turn MASTER and PREHEAT switches ON, and check for voltage.
Turn MASTER and PREHEAT switches OFF. If voltage is present, repair/replace wire 487 of APU
control box wiring harness (see WP 0438 00). If voltage is not present, go to step 11.
11. Reconnect wire 487 to 15 A circuit. Disconnect wire 487A from PREHEAT switch side of 15 A circuit
breaker. Place red lead of multimeter in wire 487A and black lead to ground. Turn MASTER and
PREHEAT switches ON, and check for voltage. Turn MASTER and PREHEAT switches OFF. If
voltage is present, replace circuit breaker (see WP 0438 00). If voltage is not present, go to step 12.
0059 00-8
