21
Front
3/8" O. D. Nylon Tubing
3/8" O. D. Nylon Tubing (Alt. 1/2" O. D.)
3/8" I. D. Hose
Key
4S-2M Axle Control Air System Configuration (Top View)
Gladhand
Gladhand
TEV or STEV
Spring Brake Control
Res. Res. Res.
ABS Relay B
(No ECU)
Lift Axle
(Gen-4 Only)
Service Brake Chamber
Emergency Brake Chamber
ABS
Relay
A
Supply Line
Service (Control) Line
Road Side
Power Cable
4S-2M Axle Control Electrical Configuration (Top View)
J560 Connector
Trailer
Side
ABS Warning LampECU
Relay
Valve A
Stand
Alone
Relay
Valve B
Diagnostic Port
Speed Sensor
Sensor B
Sensor A
Sensor C
Lift Axle
(Gen-4 Only)
Sensor D
Front
ABS
ECU Side
Road Side
Top View
Top View
Description Quantity
ECU/Relay Valve 1
Stand Alone Relay Valve 1
Sensor/Diagnostic Cable 1
Valve/Power Cable 1
Sensors — 0.4m Cable 4
Sensor Friction Sleeve 4
Parts List
Wheel Sensor
ECU
Side
Wheel
Side
Warning
Light Side
Harness Side
Warning Lamp Connector
FIGURE 26 - Typical 4S-2M Axle Control ABS Electrical and Air System (Tank Mount Shown) (Top View)
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