TM 9--2350--292--20--1
0018 00--16
AUXILIARY POWER UNIT FAILS TO CRANK -- CONTINUED
0018 00
CONTINUED FROM STEP AI
no
yes
AJ
Repair (WP 0290 00) or
replace (WP 0332 00)
harness 4W700. Verify
fault is corrected.
no
yes
AK
Repair (WP 0290 00) or
replace (WP 0247 00)
harness 4W725. Verify
fault is corrected.
Is continuity present?
CONTINUED ON NEXT PAGE
Is continuity present?
1. Disconnect harness 4W700 P1 from APU
control box connector 4W725.
2. Place multimeter red lead to harness 4W700
P1 socket B and black lead to harness
4W700 P2 bulkhead receptacle pin A.
3. Check for continuity.
1. Disconnect harness 4W725 lead 65
connector from circuit breaker CB1
connector.
2. Place multimeter red lead to harness 4W725
pin B and black lead to lead 65 connector.
3. Check for continuity.
