TM 9--2350--292--20--1
0018 00--2
AUXILIARY POWER UNIT FAILS TO CRANK -- CONTINUED
0018 00
Is 24 V dc present?
no
yes
C
CONTINUED FROM STEP B
CONTINUED ON NEXT PAGE
1. Remove front engine deck grilles
(TM 9--2350--292--10).
2. Disconnect harness 3W711 P1 from harness
3W702 J1.
3. Turn MASTER switch ON
(TM 9--2350--292--10).
4. Turn PREHEAT switch to MOM ON
(TM 9--2350--292--10).
5. Place multimeter red lead on harness 3W702
J1 socket A and black lead to ground.
6. Check for voltage.
7. Turn MASTER switch OFF.
Repair (WP 0290 00) or
replace (WP 0311 00)
harness 3W702. Verify
fault is corrected.
D
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 P1 to harness
3W702 J1.
2. Disconnect harness 3W711 lead 66 from
starter relay terminal A2.
3. Place multimeter red lead to lead 66
connector and black lead to ground.
4. Turn MASTER switch ON
(TM 9--2350--292--10).
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.
no
yes
Is 24 V dc present?
