TM 5-2350-378-23&P
0021
APPARENT HYDRAULIC DIAGNOSTIC CENTER (HDC) SYSTEM PROBLEM - Continued
STEP
10.
Check for continuity across umbilical cables.
a.
Power off HDC system.
b.
Perform continuity check between umbilical cable connector W4P1-A, and connector W4P4-A, and
between W4P1-B and W4P4-B (Figure 11).
C
A
A
C
B
B
SOCKET
PLUG
T01911HDC
Figure 11. Pin Layout for Connectors W4P1 and W4P4.
CONDITION/INDICATION
Does continuity exist between umbilical cable connector W4P1-A and connector W4P4-A, and between
W4P1-B and W4P4-B?
DECISION
YES - Go to Step (11).
NO - Replace umbilical cable W4.
