TM 9--2350--292--20--1
0009 00--11
AUXILIARY POWER UNIT FAILS TO CRANK -- CONTINUED
0009 00
CONTINUED FROM STEP Z
Is continuity present?
1. Reconnect harness 3W702 P1 at bulkhead
disconnect.
2. Disconnect lead 65 lead from starter relay.
3. Place one multimeter lead on harness 3W711
P1 pin E and other lead in harness 3W711
circuit 65 lead socket. Check for continuity.
AA
no
yes
Repair (WP 0290 00) or
replace (WP 0648 00)
harness 3W711. Verify
fault is corrected.
Replace starter relay
(WP 0640 00). Verify
fault is corrected.
Is 24 V dc present?
1. Disconnect harness 3W711 lead 66 from APU
engine connector at starter relay.
2. Turn MASTER switch ON
(TM 9--2350--292--10).
3. Place multimeter red lead in harness 3W711
lead 66 socket and black lead to ground.
Check for voltage.
4. Turn MASTER switch OFF
(TM 9--2350--292--10).
AB
no
yes
Repair (WP 0290 00) or re-
place (WP 0648 00) harness
3W711. Verify fault is cor-
rected.
CONTINUED FROM STEP U
CONTINUED ON NEXT PAGE
