TM 9--2350--292--20--1
APU CONTROL BOX ENGINE OIL PRESSURE GAUGE READS ZERO WITH
APU ENGINE RUNNING -- CONTINUED
0016 00
CONTINUED FROM STEP G
H
Is continuity present?
no
yes
1. Remove APU control box rear panel
(WP 0247 00), if not removed.
2. Disconnect lead 421 from FUEL SHUT OFF
switch.
3. Remove connector from ENGINE OIL
PRESSURE gauge.
4. Place one multimeter lead on lead 421
connector socket and the other multimeter lead
on pressure gauge lead 420B connector
socket. Check for continuity.
Repair (WP 0290 00) or
replace (WP 0247 00)
harness 4W725. Verify
fault is corrected.
I
Is continuity present?
no
yes
Place one multimeter lead on lead 420 connector
socket and the other multimeter lead on control box
receptacle pin M. Check for continuity.
Replace ENGINE OIL
PRESSURE gauge
(WP 0247 00). Verify
fault is corrected.
Repair (WP 0290 00) or
replace (WP 0247 00)
harness 4W725. Verify
fault is corrected.
END OF TASK
0016 00--5/6 blank
