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 82 of 790
TM 5--2350--378--24&P
0005 00--23
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 J3: Mates with Umbilical Cable Connector W4P3
Pin
Number
AWG
Signal Name Description
Reference
Designator
Signal
Source
Signal
Designation
Signal
Circuit No.
Signal Description
s
20
Sprung/Unsprung Control
Valve Port 11 Pressure
Signal Output
T12
Pressure
Transducer
HDC Control
Box
1022
0.5VDC – 0 PSIG
9.5VDC – 4000 PSIG
t
20
Sprung/Unsprung Control
Valve Port 11 Pressure
Signal Output Return
T12
HDC Control
Box
Pressure
Transducer
1023
HDC Control Box
Signal Output Return
u
20
Suspension Relief Valve
Pressure Signal Output
T13
Pressure
Transducer
HDC Control
Box
1024
0.5VDC – 0 PSIG
9.5VDC – 4000 PSIG
v
20
Suspension Relief Valve
Pressure Signal Output
Return
T13
HDC Control
Box
Pressure
Transducer
1025
HDC Control Box
Signal Output Return
w
20
Pressure Transducer
Excitation (+)
HDC Control
Box
Pressure
Transducer
1026A
15VDC +/-- 0.5VDC,
Ripple and Noise: 200
mVpk -- pk
x
20
Pressure Transducer
Excitation (--)
HDC Control
Box
Pressure
Transducer
1027A
HDC Control Box
Pressure Transducer
Power Return
y
20
Pressure Transducer
Excitation (+)
HDC Control
Box
Pressure
Transducer
1026B
15VDC +/-- 0.5VDC,
Ripple and Noise: 200
mVpk -- pk
z
20
Pressure Transducer
Excitation (--)
HDC Control
Box
Pressure
Transducer
1027B
HDC Control Box
Pressure Transducer
Power Return
AA
20
Pressure Transducer
Excitation (+)
HDC Control
Box
Pressure
Transducer
1026C
15VDC +/-- 0.5VDC,
Ripple and Noise: 200
mVpk -- pk
BB
20
Pressure Transducer
Excitation (--)
HDC Control
Box
Pressure
Transducer
1027C
HDC Control Box
Pressure Transducer
Power Return
CC
20
Pressure Transducer
Excitation (+)
HDC Control
Box
Pressure
Transducer
1026D
15VDC +/-- 0.5VDC,
Ripple and Noise: 200
mVpk -- pk
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