TM 9--2350--292--20--1
AUXILIARY POWER UNIT FAILS TO KEEP RUNNING -- CONTINUED
0019 00
CONTINUED FROM STEP I
J
Is 24 V dc present?
no
yes
1. Reinstall quick--disconnect connector to fuel
line.
2. Reconnect fuel line at quick--disconnect
between hull mounted double bank fuel
filters and lower fuel pump.
3. Disconnect harness 3W730 lead 76A from
lower fuel pump.
4. Place multimeter red lead to harness 3W730
lead 76A and black lead to ground.
5. Turn MASTER switch ON
(TM 9--2350--292--10).
6. Turn FUEL SHUTOFF switch ON
(TM 9--2350--292--10).
7. Check for voltage.
8. Turn FUEL SHUTOFF and MASTER
switches OFF.
Replace lower fuel pump
(WP 0615 00). Verify
fault is corrected.
Is continuity present?
1. Disconnect harness 3W730 P1 from relay box
J1 connector.
2. Place multimeter red lead onto harness 3W730
lead 76A and black lead to harness 3W730 P1
socket 4.
3. Check for continuity.
K
no
yes
Repair (WP 0290 00) or
replace (WP 0654 00)
harness 3W730. Verify
fault is corrected.
Replace relay box
(WP 0662 00). Verify
fault is corrected.
END OF TASK
0019 00--5/6 blank
