TM 9--2350--292--20--1
0018 00--3
AUXILIARY POWER UNIT FAILS TO CRANK -- CONTINUED
0018 00
E
CONTINUED FROM STEP B AND D
no
yes
Is 24 V dc present?
CONTINUED ON NEXT PAGE
NOTE
Remove sealant from electrical terminals to
ensure good contact for multimeter leads.
Apply adhesive to all exposed terminals
after troubleshooting is complete.
1. Reconnect harness 3W711 lead 66 to
starter relay terminal A2.
2. Disconnect lead N at preheater relay.
3. Turn MASTER switch ON
(TM 9--2350--292--10).
4. Place multimeter red lead to lead N
connector and black lead to ground.
5. Turn PREHEAT switch to MOM ON
(TM 9--2350--292--10).
6. Check for voltage.
7. Turn MASTER switch OFF.
Repair (WP 0290 00) or replace
(WP 0649 00) harness 3W711.
Verify fault is corrected.
F
no
yes
Is 24 V dc present?
1. Reconnect lead N to preheater relay.
2. Disconnect lead P from preheater relay.
3. Turn MASTER switch ON
(TM 9--2350--292--10).
4. Place multimeter red lead to lead P
connector and black lead to ground.
5. Turn PREHEAT switch to MOM ON
(TM 9--2350--292--10).
6. Check for voltage.
7. Turn MASTER switch OFF.
Repair (WP 0290 00) or re-
place (WP 0656 00) lead P.
Verify fault is corrected.
