TM 9--2350--292--20--1
0018 00--13
AUXILIARY POWER UNIT FAILS TO CRANK -- CONTINUED
0018 00
no
yes
AD
Replace starter relay
(WP 0641 00). Verify
fault is corrected.
AE
CONTINUED FROM STEP AC
no
yes
Repair (WP 0290 00) or
replace (WP 0651 00)
lead 3W727. Verify fault
is corrected.
CONTINUED ON NEXT PAGE
1. Disconnect lead 3W727 from starter relay
terminal X2.
2. Place multimeter red lead to starter relay
terminal X2 and black lead to ground.
3. Turn MASTER switch ON
(TM 9--2350--292--10).
4. Turn PREHEAT switch to MOM ON
(TM 9--2350--292--10).
5. Turn START switch to MOM ON
(TM 9--2350--292--10).
6. Check for voltage.
7. Turn MASTER switch OFF.
Is 24 V dc present?
1. Place multimeter leads on lead 3W727 and
common ground E3.
2. Check for continuity.
Is continuity present?
