TM 9--2350--292--20--1
0023 00--2
APU CONTROL BOX HIGH AIR TEMP INDICATOR DOES NOT LIGHT --
CONTINUED
0023 00
CONTINUED FROM STEP A
no
yes
CONTINUED ON NEXT PAGE
Go to Step D.
Is continuity present?
no
yes
1. Disconnect the temporary jumper wire from
harness 3W704 lead 493.
2. Remove APU cover (WP 0413 00).
3. Remove lead 3W705 from APU (WP 0645 00).
4. Place one multimeter lead on each end of lead
3W705. Check for continuity?
Replace lead 3W705
(WP 0645 00). Verify fault
is corrected.
B
1. Reconnect harness 4W700 connector P1 at
the APU control box.
2. Open APU door (TM 9--2350--292--10).
3. Disconnect lead 3W705 from harness 3W704
lead 493.
4. Temporarily connect a jumper wire from
harness 3W704 lead 493 connector to vehicle
ground.
5. Turn MASTER switch ON
(TM 9--2350--292--10).
6. Turn FUEL SHUTOFF switch ON
(TM 9--2350--292--10).
7. Observe HIGH AIR TEMP indicator light
(TM 9--2350--292--10).
8. Turn FUEL SHUTOFF and MASTER switches
OFF.
Did HIGH AIR TEMP indicator light?
C
Replace APU high air
temperature switch
(WP 0633 00). Verify
fault is corrected.
