WABCO ESC - Page 30

3 Diagnostics, Troubleshooting and Testing
26
WABCO Maintenance Manual MM-0112 (Revised 07-18)
Figure 3.18
Figure 3.18
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X1X4
4007205a
CAB MOUNT ECU’S:
LOOKING INTO WIRE HARNESS CONNECTOR
ECU Modulator Circuit Connector Pins
Cab-Mounted
Universal with ESC,
Universal or Basic
(ABS modulators
are grounded
externally, i.e.,
common is fed to
external ground)
LF IV X2-18 pin 3
LF OV X2-18 pin 6
RF IV X2-18 pin 1
RF OV X2-18 pin 4
LR IV X2-18 pin 2
LR OV X2-18 pin 5
RR IV X2-18 pin 8
RR OV X2-18 pin 9
LR (3rd Axle) IV X3-15 pin 3
LR (3rd Axle) OV X3-15 pin 6
RR (3rd Axle) IV X3-15 pin 12
RR (3rd Axle) OV X3-15 pin 15
Optional with
Stability Control
Trailer IV X3-15 pin 7
Trailer OV X3-15 pin 10
Trailer Common X3-15 pin 8