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Section 2
ECU/VaIve Assembly (Figure
2.1)
· 12 volt
· Integrated ECU and
ABS relay valve
-ECU and valve assembly are serviceable items.
· The ECU/Valve
Assembly may be mounted with the sensors facing either the front or rear of
the trailer.
ABS External Valve (Figure
2.2)
· Controls air
pressure to the brake chambers where it is plumbed.
· During ABS
operation, the valve adjusts air pressure to the brake chambers to control
braking and prevent wheel lock.
· Used in conjunction
with ECU/VaIve Assembly for 2M or 3M systems.
Sensor with Molded Socket (Figure
2.3)
· Measures the speed
of a tooth wheel rotating with the vehicle wheel.
· Produces an output
voltage proportional to wheel speed.
Sensor Spring Clip (Figure
2.4)
· Holds the wheel speed sensor in close proximity to to the tooth wheel.
Tooth Wheel (Figure
2.5)
· A machined ring mounted to the machined surface on the hub of each
ABS-monitored wheel
Cables for Enhanced Easy-Stop (Figure
2.6)
Easy-Stop Trailer ABS Indicator Label
· Provides information about
the operation of the ABS indicator lamp and illustrates blink code fault
locations.
· Label is self-adhesive and is
mounted on the trailer near the ABS indicator lamp.
· If there is no warning label on
your trailer, let your supervisor know. Labels are available from
Meritor WABCO. Ask for the Part Number TP-95172.
TOOLBOX Software (Figure 2.7)
TOOLBOX Software is a PC-based diagnostic program that can display wheel
speed data, test individual components , verify installation wiring and more.
Version 4.1 (or higher) supports Enhanced Easy-Stop with PLC, and runs in
WIndows® 95, 98, NT, 2000, and Me. An RS232 to J1708
converter box is required.
PLC/J1708 Adapter (Figure 2.8)
· Simulates the tractor ABS lamp, ensuring that the trailer ABS is capable
of "lighting the light."
· Simulates the trailer ABS lamp, ensuring that the tractor is capable of
"lighting the light."
· Use as a trailer/tractor tester to ensure that PLC is functioning
properly.
MPSI Pro-Link® 9000 Diagnostic Tool (Figure
2.9)
· Provides
diagnostic and testing capability for ABS components.
· Requires a
Multiple Protocol Cartridge (MPC) and Meritor WABCO application card,
version 2.0 or higher, for use with Enhanced Easy-Stop with PLC.
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