TM 9-2350-256-20-1
0059 00
CORRECTIVE ACTION
WARNING
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry contacts a metal surface a direct
short may result in instant heating of tools, damage to equipment, and injury or death to personnel.
1.
Open center-front air inlet 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 in socket
A of wire 66 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, go to step 2. If voltage is
not present, troubleshoot battery circuit.
2.
Place red lead of multimeter in socket E of wire 65 and black lead to ground. Turn MASTER, PRE-
HEAT, and APU START switches on and check for voltage. Turn MASTER, PREHEAT, and APU
START switches OFF. If voltage is present, go to step 3. If voltage is not present, go to step 4.
0059 00-3
