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