Technical information

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20
Technician Guidelines for Antilock Braking Systems
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• Environmental Protection—Whenever a termination is
made in a conductor which disturbs the integrity of the
insulation on the conductor, measures must be taken
to ensure that the termination is not susceptible to
moisture damage or other damage which may result
from the conductor or termination being exposed to its
normal operating environment. Additionally,
consideration must be given to the type of insulating
material being used to ensure that it has an acceptable
heat range and is compatible with the intended
environment.
• Electromagnetic/Radio Frequency Interference
Protection—The ECU contains components that can
detect radio waves and other electromagnetic “noise”
and unintenionally send false signals because of them.
To prevent radio frequency interference (RFI) and
electromagnetic interference (EMI), ABS cables contain
special shielding. When making repairs, take care to
ensure the integrity of the shielding is not
compromised.
For terminations that are made to a threaded stud which is
exposed to salt spray or other corrosive environments, a
suitable coating material should be applied to the connection to
ensure adequate service life.
Conventional Terminations—Conventional terminations are
terminations made using commercially available terminals such
as ring terminals, spade terminals, etc. Terminals of this type
are available through many different outlets.
Selection of good quality terminals is crucial to making a
dependable connection. The selection should include the
considerations mentioned in “Wiring Termination Techniques,”
as well as specific considerations about the location of the
termination on the vehicle (for example, heat exposure). Some
fleets have established specific methods for making
terminations. These methods were developed to ensure
consistent terminations which will yield an acceptable service
life. These recommendations should be followed when
applicable.
Proprietary Terminations—Proprietary terminations are
terminations made using proprietary terminals and connector