X1 Grey
Pin
Signal
X1-1
IGN
1
X1-2
IGN
2
X1-3
ATCL
X1-4
1587
+
X1-5
RET
X1-6
ENG
–
X1-7
ENG
+
X1-8
SHLD/TIL
X1-9
1587
–
X1-10
WL
X1-11
GND
2
X1-12
GND
1
X2 Black
Pin
Signal
X2-1
BLS
X2-2
HLD
LS
X2-3
REL
RS
X2-4
HLD
RS
X2-5
SS
RS
X2-6
SS
BS
X2-7
SS
LS
X2-8
SS
LS
X2-9
CMN
RS
X2-10
REL
LS
X2-11
CMN
LS
X2-12
ORS
FIGURE 45 - Frame Mount ECU – Pin Identification Chart
44
Description
Ignition-1
Ignition-2
ATC Light/ATC Switch
J1587+
Retarder Control
J1922/1939 Engine Control Link-
J1922/1939 Engine Control link+
™
™
Gen 4
ABS J1939 Shield/Gen 5
ABS TIL
J1587-
ABS WL/Diagnostic Switch
Ground
Ground
Description
Brake Light Switch
Hold Sol, Left Steer
Release Sol, Right Steer
Hold Sol, Right Steer
Speed Sensor, Right Steer-
Speed Sensor, Right Steer+
Speed Sensor, Left Steer-
Speed Sensor, Left Steer+
Common, Right Steer Valve
Release, Left Steer Valve
Common, Left Steer Valve
Off Road Switch
X3 Green
Pin
Signal
Description
X3-1
SS
Speed Sensor, Left Rear-
LR
X3-2
SS
Speed Sensor, Left Rear+
LR
X3-3
SS
Speed Sensor, Right Rear-
RR
X3-4
SS
Speed Sensor, Right Rear+
RR
X3-5
ATCV
Traction Control Valve-
-
X3-6
ATCV
Traction Control Valve+
+
X3-7
REL
Release Sol, Right Rear
RR
X3-8
CMN
Common, Right Rear
RR
X3-9
HLD
Hold Sol, Right Rear
RR
X3-10
REL
Release Sol, Left Rear
LR
X3-11
CMN
Common, Left Rear
LR
X3-12
HLD
Hold Sol, Left Rear
LR
X4 Brown
Pin
Signal
Description
X4-1
DLC
Diff Lock Control-
-
X4-2
DLC
Diff Lock Control+
+
X4-3
SS
Speed Sensor Left Rear Rear-
LRR
X4-4
SS
Speed Sensor Left Rear Rear+
LRR
X4-5
SS
Speed Sensor Right Rear Rear-
RRR
X4-6
SS
Speed Sensor Right Rear Rear+
RRR
X4-7
REL
Release Sol, Right Rear Rear
RRR
X4-8
CMN
Common, Right Rear Rear
C+
X4-9
HLD
Hold Sol, Right Rear Rear
RRR
X4-10
REL
Release Sol, Left Rear Rear
LRR
X4-11
CMN
Common, Left Rear Rear
LRR
X4-12
HLD
Hold Sol, Left Rear Rear
LRR
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