Eager Beaver 20 Ton XPT, Service Manual

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Easy
-Stop
Meritor WABCO Vehicle Control Systems
2135 West Maple Road
Troy, MI 48084-7121 USA
meritorwabco.com
TP-0173
(Replaces TP-94159)
Revised 12-07
16579/22882
Printed in USA
Copyright 2007
ArvinMeritor, Inc.
Enhanced Easy-Stop
TM
blink codes may be accessed by ignition circuit and counting flashes on the trailer ABS
indicator lamp on the side of the trailer.
To access blink codes: • Turn ignition ON for one second,
, d n o c e s e n o r o f F F O n o it i n g i n r u T •
. p m a l S B A e h t n o s e h s a lf e h t t n u o c d n a N O n o it i n g i n r u T •
With Enhanced Easy-Stop
TM
, the Blink Code tool and the ABS Lamp on the trailer do not function simultaneously.
Note: (Easy-Stop
TM
only) If the blink code indicates there are no faults, but the trailer ABS indicator lamp continues to come on
and stay on when you apply the brakes to the moving vehicle, there is an intermittent fault that must be repaired. Refer to
Maintenance Manual No. 33, Expert Mode Diagnostics.
For further information on blink code diagnostics, refer to Maintenance Manual No. 33 (Easy-Stop
TM
), Maintenance Manual
MM-0180 (Enhanced Easy-Stop
TM
) or call: 800-535-5560 .
These manuals are posted on our website at meritorwabco.com .
Troubleshooting and Repair
BLINK
CODE
CAUSE OF FAULT
No faults.
Sensor BU1: Cable break, short circuit or out of
adjustment.
Sensor YE1: Cable break, short circuit or out of
adjustment.
Sensor BU2: Cable break, short circuit or out of
adjustment.
Sensor YE2: Cable break, short circuit or out of
adjustment.
Ext. Modulator (RD): Short to power, cable break
or open, short to ground or cable damaged, or
ECU/Valve Assembly Failure.
ECU — Internal Failure
Internal failure.
SAE J1708 Failure
Generic SAE J2497 (PLC) Failure
Generic I/O Failure
Internal Modulator Failure, Outlet Valve.
Enhanced Easy-Stop
TM
Only.
Power Supply: Over or under voltage, current
low, or internal failure.
Easy-Stop
TM
: External Modulator (BU)
Enhanced Easy-Stop
TM
: Internal Modulator Failure,
Inlet Valve #2: Short to power, cable break or open,
short to ground or cable damaged, or ECU/Valve
Assembly Failure.
Easy-Stop
TM
: ECU/Valve Assembly Modulator (YE)
Enhanced Easy-Stop
TM
: Internal Modulator Failure,
Inlet Valve #1: Short to power, cable break or open,
short to ground or cable damaged, or ECU/Valve
Assembly Failure.
Repair vehicle power supply, check vehicle voltage
output and connector; check ECU’s configuration.
ACTION REQUIRED
System O.K. No action needed.
Check sensor, sensor cable and cable connection; adjust
sensor; or check for excessive hub runout, a sensor gap
that is too wide or damage to the tooth wheels.
Check sensor, sensor cable and cable connection; adjust
sensor; or check for excessive hub runout, a sensor gap
that is too wide or damage to the tooth wheels.
Check sensor, sensor cable and cable connection; adjust
sensor; or check for excessive hub runout, a sensor gap
that is too wide or damage to the tooth wheels.
Check sensor, sensor cable and cable connection; adjust
sensor; or check for excessive hub runout, a sensor gap
that is too wide or damage to the tooth wheels.
Check ABS valve and cable. Replace as required.
Verify correct installation. If code continues, contact
Meritor WABCO for assistance.
Internal failure, contact Meritor WABCO.
Internal failure, contact Meritor WABCO.
Internal failure, contact Meritor WABCO.
Verify correct electrical installation. Check power
supply. Make necessary corrections.
Easy-Stop
TM
: Check ABS valve and cable. Replace as
required.
Enhanced Easy-Stop
TM
: Verify correct installation. If code
continues, contact Meritor WABCO for assistance.
Easy-Stop
TM
: Check ABS valve and cable. Replace as
required.
Enhanced Easy-Stop
TM
: Verify correct installation. If
code continues, contact Meritor WABCO for assistance.
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