TM 9--2350--292--20--1
0016 00--4
APU CONTROL BOX ENGINE OIL PRESSURE GAUGE READS ZERO WITH
APU ENGINE RUNNING -- CONTINUED
0016 00
F
Is continuity present?
CONTINUED FROM STEP E
no
yes
CONTINUED ON NEXT PAGE
1. Reconnect harness 3W704 connector P1 at
APU engine disconnect.
2. Disconnect harness 4W700 connector P1 at
APU control box.
3. Place one multimeter lead on harness 4W700
connector P2 bulkhead receptacle pin E and
the other multimeter lead on harness connector
socket M. Check for continuity.
Repair (WP 0290 00) or
replace (WP 0332 00)
harness 4W700. Verify
fault is corrected.
G
Is continuity present?
no
yes
1. Reconnect harness 4W700 connector P2 at
bulkhead disconnect.
2. Remove APU control box from the vehicle
(WP 0247 00).
3. Turn FUEL SHUT OFF switch ON
(TM 9--2350--292--10).
4. Place one multimeter lead on control box
receptacle pin N and the other multimeter lead
on pin F. Check for continuity.
Go to STEP D of
troubleshooting chart
for AUXILIARY
POWER UNIT FUEL
SOLENOID FAILS
TO ENERGIZE
(WP 0021 00).
