TM-5-2350-378-23-P
ARMORED COMBAT EARTHMOVER (ACE), M9; HYDRAULIC DIAGNOSTIC CENTER
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JUNE 2012
TM-5-2350-378-23-P - Page 344 of 644
APPARENT HYDRAULIC DIAGNOSTIC CENTER (HDC) SYSTEM PROBLEM - Continued
b.
Perform continuity test and check for short circuit to cable (connector case/shell) for two pins/wires in
W4 cable that go from either connector W4P2 or W4P3 (as applicable), normally connected to HDC
control box, to W4P5 or W4P6 connector (as applicable) normally connected to umbilical disconnect
bracket (Figures 33 and 34).
PLUG
T01933HDC
Figure 33.
Umbilical Cable Assembly W4P2 and W4P3 Electrical Connectors.
SOCKET
T01934HDC
Figure 34.
Umbilical Cable Assembly W4P5 and W4P6 Electrical Connectors.
CONDITION/INDICATION
Does an open circuit or short circuit exist for umbilical cable assembly W4 wiring circuit (CIRCUIT FAULT
pressure transducer 15 VDC referenced voltage circuit) being checked?
DECISION
YES - Replace umbilical cable assembly W4. Resume HDC system functional check-out (WP
0025) .
NO - Go to Step (40).
TM 5-2350-378-23&P
0021
0021-32
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