6
Wiring Diagrams and Connectors
57
WABCO
Maintenance Manual MM-0112 (Revised 07-18)
6S/6M Universal ECU with RSC and Optional Front Axle Brake (6S/4M and 4S/4M Configurations are also
available)
Figure 6.9
Figure
6
.9
BACK VIEW OF HARNESS CONNECTOR
3
2
1
6
5
4
9
8
7
12
11
10
15
1
4
13
15 PIN CONNECT
OR
TRAILER ABV
TRL ABV-
8
TRL ABV+
13
NOT USED 9
SENSOR 2
SENSOR 5
INLET 3
OUTLET 6
SENSOR 11
SENSOR 1
4
INLET 12
OUTLET 15
GND*
BACK VIEW OF HARNESS CONNECTOR
INLET
VALVE
INLET
VALVE
INLET
VALVE
OUTLET
VALVE
INLET
VALVE
INLET
VALVE
OUTLET
VALVE
OUTLET
VALVE
NOT
USED
TRL
ABV-
TRL
ABV+
OUTLET
VALVE
OUTLET
VALVE
OUTLET
VALVE
INLET
VALVE
ABV-
SENSOR
SENSOR
SENSOR
SENSOR
SENSOR
SENSOR
3
2
1
6
5
4
9
8
7
12
11
10
15
1
4
13
SENSOR
SENSOR
SENSOR
SENSOR
SENSOR
AUX 1
AUX 2
AUX 3
AUX
4
SENSOR
ABV+
18
17
16
1
8
PIN CONNECT
OR
SENSOR 10
SENSOR 13
SENSOR 11
SENSOR 1
4
SENSOR 12
SENSOR 15
ABV+ 16
SENSOR 17
SENSOR 18
INLET
VALVE
OUTLET
VALVE
INLET
VALVE
OUTLET
VALVE
INLET
VALVE
OUTLET
VALVE
ABV-
INLET
VALVE
OUTLET
VALVE
RIGHT FRONT
ABS VALVE
FRONT AXLE BRAKE (OPTIONAL)
GND
U
GND
POWER
PRESSURE SENSOR
16
13
7
10
1
3
2
5
4
11
1
4
8
9
12
6
15
17
18
LEFT FRONT
ABS VALVE
LEFT REAR
ABS VALVE
RIGHT REAR
ABS VALVE
RIGHT FRONT
SENSOR
LEFT REAR
SENSOR
LEFT FRONT
SENSOR
RIGHT REAR
SENSOR
TP
1
4
3
6
2
5
IV
GND
OV
IV
GND
OV
10
13
11
1
4
12
15
17
18
IV
GND
OV
IV
GND
OV
8
9
REAR
ABV
1
4
3
6
2
5
7
TP
8
9
TP
TP
16 AWG
16 AWG
16 AWG
16 AWG
8
13
BACK VIEW OF HARNESS CONNECTOR
SAE
J1939
H
TR-WL
SAE
J1939
L
ATC
ABS
ECU-
GND
BAT
ECU+
JUMPER
SAE
J1587
A
SAE
J1587
B
ABS
LAMP
3RD
BRK
ATC
LAMP
3
2
1
6
5
4
9
8
7
11
10
15
1
4
13
1
4
PIN CONNECT
OR
TRAILER INDICATOR LAMP
TP
1
3
J1939 L
J1939 H
10
11
8
15A AMP
5 AMP
1
4
AWG
BAT
IGN
J1587 B
J1587 A
TP
ATC
SWITCH
J1587 B
J1587 A
J1939 L
J1939 H
BATTERY
ECU+
RETARDER
TRAILER
INDICATOR
LAMP
ATC LAMP
TRACTOR
INDICATOR
LAMP
ATC SWITCH
ABS OFF
ROAD
ECU-
GND
10
11
1
3
8
7
1
4
2
13
15
6
5
4
9
4
9
ATC/RSC LAMP
TRACTOR INDICATOR LAMP
2
13
15
BLINK CODE
SWITCH
ABS OFF ROAD SWITCH
7
1
4
AWG
86
30
87
1
4
87A
85
RETARDER
4004030k
Momentary Swit
c
h
O
p
tional Equi
p
ment
Twisted Pair = TP
All unmarked wires should be 16 or 18 AWG.
All fuses should be blade ty
p
e.
*All
c
onne
c
ted to a
c
ommon star
g
round.
3RD AXLE
LEFT SENSOR
16 AWG
16 AWG
3RD AXLE
RIGHT SENSOR
3RD AXLE
LEFT ABS VALVE
3RD AXLE
RIGHT ABS VALVE
2
5
IV
GND
OV
IV
GND
OV
3
6
11
1
4
12
15
X2
X
4
X3
X3
X
4
X2
X1
X1
p