
6 Wiring Diagrams and Connectors
51
Meritor WABCO Maintenance Manual MM-0112 (Revised 05-13)
Basic ECU ABS Only with Optional Automatic Traction Control (ATC) (Cab-mounted)
Figure 6.6
Figure 6.6
BACK VIEW OF HARNESS CONNECTOR
X2
X1
INLET
VALVE
INLET
VALVE
INLET
VALVE
OUTLET
VALVE
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
14 13
SENSOR
SENSOR ABV+
18
17 16
18 PIN CONNECTOR
SENSOR 10
SENSOR 13
SENSOR 11
SENSOR 14
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
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
14
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
GND*
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
12
11 10
15
14 13
14 PIN CONNECTOR
TRAILER INDICATOR LAMP
TP
1
3
J1939 L
J1939 H
10
11
8
15A AMP
5A AMP
14 AWG
BAT
J1587 B
J1587 A
TP
AT C
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
14
2
13
15
6
5
4
9
4
9
86
30
87
ATC LAMP
TRACTOR INDICATOR LAMP
2
14
13
15
BLINK CODE
SWITCH
ABS OFF ROAD SWITCH
7
87A
IGN
85
RETARDER
4004027d
*All connected to a common star ground.
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