TM 9--2350--292--20--1
0014 00--2
APU CONTROL BOX HIGH AIR TEMP INDICATOR DOES NOT LIGHT --
CONTINUED
0014 00
CONTINUED FROM STEP A
no
yes
CONTINUED ON NEXT PAGE
Notify Direct Support
Maintenance.
Is continuity present?
no
yes
1. Disconnect the temporary jumper wire.
2. Disconnect harness 3W704 from lead 3W705.
3. Place one multimeter lead on each end of lead
3W705. Check for continuity.
Replace lead 3W705
(WP 0644 00). Verify
fault is corrected.
B
1. Reconnect harness 4W700 connector P1 at
the control box.
2. Remove APU cover and shields
(WP 0413 00/WP 0622 00) and open forward
air intake grilles (TM 9--2350--292--10).
3. Disconnect lead 3W705 at high temperature air
switch on APU.
4. Temporarily connect a jumper wire from lead
3W705 connector socket to vehicle ground.
5. Turn MASTER switch ON
(TM 9--2350--292--10).
6. Turn FUEL SHUT OFF switch ON
(TM 9--2350--292--10).
7. Observe HIGH AIR TEMP indicator light
(TM 9--2350--292--10).
8. Turn MASTER AND FUEL SHUT OFF
switches OFF (TM 9--2350--292--10).
Did HIGH AIR TEMP indicator light?
C
