
Section 4
System Configurations
Page 16
4S/2M Trailer ABS Configuration Diagram for Lift Axle Applications
(Rear Lift Axle Installation Diagram)
For direct tank-mounted installations, see “How to
Install the ECU/Valve Assembly” in Section 6,
"Component Replacement".
Typical Application:
앫 Tandem and Tri-Axle Semi-Trailer
Figure 4.6
A Service/Control Lines
B Sensor Cables
C Service to Brake Lines (Delivery Lines)
D Air Supply/Emergency Lines
1 ECU/Valve Assembly (YE)
2 External Valve (BU)
3 Air Tanks
4 Fixed Axle
5 Lift Axle
A
B
C
D
3
3
1
2
1002090e
5
5
4
4
(BU)
(YE)
BU1
YE1
BU2
YE2
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