Product Manual

ManualsBrandsIPA ManualsLight TestersSuper Mutt Mobile Universal Trailer Light Tester — Standard, 0-20 Amps

PART 9: ABS BLINK CODE DIAGNOSTICS

The MUTT

can be used to access ABS Blink Codes on trailers equipped with

ABS systems. Trailers 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 speciﬁ c sequence is performed, you then must as-

sess the trailer ABS lamp. The number of blinks displayed on the trailer ABS lamp will

correspond to a speciﬁ c ABS fault. As each manufacturer uses different access meth-

ods 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 speciﬁ c ABS manufacturer manuals for more detailed information and

any discrepancies in their literature shall supersede the following directions.

PART 7: ELECTRICAL/LIGHTING TESTING

Complete the pretesting checklist prior to all testing procedures.

The MUTT

is microprocessor controlled and features a special diagnostic ﬁ rmware,

designed to seamlessly integrate with your preferred methods of testing. The MUTT

will power the selected electrical circuits and instantly alert you to any signs of a faulty

condition. To properly utilize the diagnostic features, a complete scan of the

trailer’s electrical system should be performed at the front of the trailer using the

MUTT

prior to a walk-around inspection. If any wiring faults are present, the MUTT

will blink or sound, alerting you to the issue. Only a one-time, walk-around/visual

inspection is needed to conﬁ rm that each individual light bulb is properly illuminating.

NOTE: Some advanced functions may not be listed on the face panel, so it’s

important to read the manual in its entirety to ensure that you are getting the full use

of this diagnostic system.

7.1 SELECTING A CIRCUIT

Circuits can be selected for testing manually, via remote control or by initiating Auto

Cycle Mode.

OPERATING WITH MANUAL CONTROL

1. Turn the control knob to select a circuit. The control knob

is automatically set to Ground Integrity when power is

turned on.

OPERATING WITH THE REMOTE CONTROL

1. Press and release the UP ARROW to select the next

circuit in clockwise rotation.

2. Press and release the DOWN ARROW to select the next

circuit in a counterclockwise rotation.

AUTO CYCLE MODE

Auto Cycle Mode automatically tests one circuit at a time

in a clockwise rotation.

1. Press and release the control knob. The Auto Cycle

Indicator should illuminate.

2. A ﬁ ve second delay commences before power is

automatically applied to the ﬁ rst circuit.

3. Circuits are automatically tested one at a time in a clockwise rotation, starting from

the Ground Integrity Indicator.

4. To cancel Auto Cycle Mode, momentarily press and release or turn the control knob.

NOTE: Auto Cycle Mode does not work when ABS or Brake Light Circuits are selected.