TM-5-2350-378-24-P
HYDRAULIC DIAGNOSTIC CENTER (HDC) SUPPORTING ARMORED COMBAT EARTHMOVER (ACE), M9
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
TM-5-2350-378-24-P - Page 72 of 790
TM 5--2350--378--24&P
0005 00--13
USING THE HYDRAULIC DIAGNOSTIC CENTER (HDC) SYSTEM TO TROUBLESHOOT THE M9 HYDRAULIC SYSTEM --
Continued
0005 00
Table 4. HDC Control Box Connectors – Pin Designation Signal Names/Identification
Connector J1: Mates with Umbilical Cable Connector W4P1
Pin Number
AWG
Signal Name
Description
Reference
Designator
Signal Source
Signal
Designation
Signal
Circuit No.
Signal
Description
Comments
A
16
HDC Control Box
Power
Vehicle 15A
Circuit Breaker
HDC Control
Box
1070
18 – 32VDC
per
MIL--STD--1
275, 10A
Maximum
The maximum
current rating
includes the 4
spare transducers
and 4 valves
turned ‘ON’
simultaneously
B
16
HDC Control Box
Power Return
Vehicle
Ground
Connection
HDC Control
Box
1069
24VDC
Ground
C
16
Spare
Connector J2: Mates with Umbilical Cable Connector W4P2
Pin Number
AWG
Signal Name
Description
Reference
Designator
Signal Source
Signal
Designation
Signal
Circuit No.
Signal Description
A
20
Spare Shutoff Valve
Power 1
HDC Control Box
18 – 32VDC per
MIL--STD--1275
B
20
Spare Shutoff Valve
Power Return 1
HDC Control Box
18 – 32VDC per
MIL--STD--1275
Power Return
C
20
Spare Shutoff Valve
Power 2
HDC Control Box
18 – 32VDC per
MIL--STD--1275
D
20
Spare Shutoff Valve
Power Return 2
HDC Control Box
18 – 32VDC per
MIL--STD--1275
Power Return
E
20
Spare Shutoff Valve
Power 3
HDC Control Box
18 – 32VDC per
MIL--STD--1275
F
20
Spare Shutoff Valve
Power Return 3
HDC Control Box
18 – 32VDC per
MIL--STD--1275
Power Return
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