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 78 of 790
TM 5--2350--378--24&P
0005 00--19
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 -- Continued
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
EE
20
Suspension Relief
Valve Port 17R Shutoff
Valve Power
V19
HDC Control Box
Suspension
Relief Valve Port
17R Shutoff
Valve
1065
18 – 32VDC per
MIL--STD--1275
FF
20
Suspension Relief
Valve Port 17R Shutoff
Valve Power Return
V19
HDC Control Box
Suspension
Relief Valve Port
17R Shutoff
Valve
1066
18 – 32VDC per
MIL--STD--1275
Power Return
GG
20
Ejector Cylinder
Extend to Main
Accumulator Shutoff
Valve Power
V20
HDC Control Box
Ejector Cylinder
Extend to Main
Accumulator
Shutoff Valve
1067
18 – 32VDC per
MIL--STD--1275
HH
20
Ejector Cylinder
Extend to Main
Accumulator Shutoff
Valve Power Return
V20
HDC Control Box
Ejector Cylinder
Extend to Main
Accumulator
Shutoff Valve
1068
18 – 32VDC per
MIL--STD--1275
Power Return
Connector J3: Mates with Umbilical Cable Connector W4P3
Pin
Number
AWG
Signal Name Description
Reference
Designator
Signal
Source
Signal
Designation
Signal
Circuit No.
Signal Description
A
20
Spare Transducer Signal
Output 1
Pressure
Transducer
HDC Control
Box
0.5VDC – 0 PSIG
9.5VDC – 4000 PSIG
B
20
Spare Transducer Signal
Output Return 1
HDC Control
Box
Pressure
Transducer
HDC Control Box
Signal Output Return
C
20
Spare Transducer Signal
Output 2
Pressure
Transducer
HDC Control
Box
0.5VDC – 0 PSIG
9.5VDC – 4000 PSIG
D
20
Spare Transducer Signal
Output Return 2
HDC Control
Box
Pressure
Transducer
HDC Control Box
Signal Output Return
E
20
Spare Transducer Signal
Output 3
Pressure
Transducer
HDC Control
Box
0.5VDC – 0 PSIG
9.5VDC – 4000 PSIG
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