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 321 of 644

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

B

A

T01911HDC

PLUG

A

B

C

SOCKET

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.

TM 5-2350-378-23&P

0021

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