Part 9: Abs Blink Code Diagnostics - iPA Alpha MUTT 5700 Operator's Manual

PART 9: ABS BLINK CODE DIAGNOSTICS

The MUTT can be used to access ABS Blink Codes on trailers equipped with ABS
®
systems. Trailers that are equipped with ABS feature an ABS Control Unit (ECU)
which detects any electrical fault in the trailer ABS. Most trailers with ABS will also
have a dedicated ABS lamp on the driver side. Each fault has a code. When a fault
occurs, the ECU stores the code for that fault in its memory. This fault code will be
displayed on the trailer ABS lamp when the proper access sequence is engaged.
ACCESSING ABS BLINK/FAULT CODES
The MUTT provides a quick method to trigger ABS blink codes without a tractor
®
present. Depending on the system, you will need to selectively power the Auxiliary
and/or Brake Light Circuit in the correct order. Instructions on how to access several
of the most common ABS systems can be found below.
Once the correct manufacturer's specific sequence is performed, you then must
assess the trailer ABS lamp. The number of blinks displayed on the trailer ABS lamp
will correspond to a specific ABS fault. As each manufacturer uses different access
methods and each blink code has different meanings, the remainder of the ABS
section will be broken down by the brand of ABS system installed on the trailer you
wish to test.
Note: ABS Manufacturer Access Protocols/Blink Codes are subject to change.
Please consult specific ABS manufacturer manuals for more detailed information and
any discrepancies in their literature shall supersede the following directions.
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