User Manual

Anti-Lock Brake System (ABS)
Illuminates during the Bulb Check (See
Bulb Check on page 68). Have the ABS
checked by an authorized dealer if the ABS
W
arning Lamp stays on for more than 3
seconds.
• Illuminates during normal operating
conditions to indicate a problem
with the ABS.
• Illuminates when a problem exists
with Automatic Traction Control
(ATC).
See also Automatic Traction Control on
page 4-33.
NOTE
After servicing the ABS, the lamp
stays
on after the power-on self test.
This indicates that the ABS wheel sen-
sors have not been checked by the
ABS. As soon as the vehicle is driven
at speeds above 4 mph (6 km/h) the
lamp turns off, indicating that the
wheel sensors have been checked by
the ABS.
Anti-Lock Brake System (ABS),
T
railer
1. It illuminates during the power-on
self test when the ignition is turned
ON. It turns of
f after a few seconds
if no system problems are
detected. The bulb self-test is
performed whenever the ignition is
turned ON, regardless of whether
you have Trailer ABS. If a Trailer
ABS system is detected, the lamp
will turn off after a few seconds if
no system problems are detected.
NOTE
If the Trailer ABS Warning
Lamp
does not turn on during
the power-on self test, there
may be a problem with the light
or wiring. You should have this
checked as soon as possible.
2. If it turns on at any other time, it is
indicating that a problem exists
with the Power Line
Communication (PLC) trailer ABS.
This should be checked by an
authorized dealer as soon as
possible. (Refer to "T
railer ABS" in
the Operator's Manual for more
information.)
3. If your tractor and trailer have the
"Special Trailer ABS (Without PLC)
Option," (Refer to "Special Trailer
ABS (Without PLC) Option" in the
Operator's Manual for more
information.) this lamp will turn on
when the trailer ABS has a system
problem. This should be checked
by an authorized dealer as soon as
possible. Power on self test for
trailer ABS is controlled by the
cluster and occurs under all
conditions.
CONTROLS - Warning Lights and Indicators
Y53-6113-1A1 (11/20) 55
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