iPA SMART MUTT X User manual

Innovative Products of America®Incorporated
888-786-7899 • 234 Tinker Street, Woodstock, NY 12498 • www.ipatools.com
A Universal, Battery Powered, Diagnostic Tester for
7-Way Round, 7-Way Flat, 6-Way Round and 4/5 Pin Trailers
MADE IN
USA
OPERATOR’S MANUAL
#4105
SMART MUTT®X
Mobile Universal Trailer Tester

LETTER FROM THE PRESIDENT OF IPA®
My name is Ian Vinci and I would like to thank you for your interest in our products. In
today’s world, we have all experienced the lack of service and consideration demonstrated
by many companies after you buy their products. They say whatever they can to make
the sale, and then it’s like pulling teeth to get any service response out of them. I know
this myself rsthand and because of this, I want to be sure that your experience with IPA®
meets your expectations and that IPA®never disappoints you with our service or customer
response.
To prove my commitment to you, if for any reason, you are not happy with one of our
products, or more importantly, with the response from our customer service department,
or any member of the IPA®team, I invite you to contact me directly via my email,
[email protected] or call me at 888-786-7899. Your satisfaction is more important to
me than the sale itself. We will not be in business for long if we don’t make you completely
happy with our products and service. I want IPA®to be different and be known for its quality
and service.
With that said, please take a look at our product line. You will see innovative rst time
products that were created to help you do your job faster and better than before.
I would also like to invite you to critique our products. If you can think of a better way
to make them or changes that will make them work better, please contact me directly
and I will be sure to look into it. If you have an innovation and would like some
feedback, give me a call.
From all of us at IPA®, we thank you for taking the time to review our product line and wish
you and your family the very best of everything.
Ian Vinci
President
IPA®
www.ipatools.com
Toll Free: 888-786-7899
Phone: [phone]
Fax: [phone]

TABLE OF CONTENTS
PART 1: IMPORTANT SAFETY INSTRUCTIONS ..................................
1.1 Important Information ....................................................................
1.2 Battery Gases, Tester Preparation and Tester/Charger Location ..
1.3 General Charger Use .....................................................................
PART 2: WHAT’S INCLUDED .................................................................
PART 3: SET-UP .....................................................................................
3.1 Specications ................................................................................
3.2 Choosing Battery ...........................................................................
3.3 Installing an Internal Battery ..........................................................
3.4 Auto Shutdown Feature ................................................................
PART 4: PRETESTING CHECKLIST ......................................................
PART 5: GENERAL CONTROLS AND OPERATIONS ...........................
5.1 Control Panel .................................................................................
5.2 Left and Right Side Panels ............................................................
5.3 Using the 12-Button Remote Control ............................................
PART 6: ELECTRICAL/LIGHTING TESTING .........................................
6.1 Selecting a Circuit ..........................................................................
Auto-Cycle Mode
6.2 Ground Integrity Test .....................................................................
Establishing a Chassis Ground
6.3 Fault Indication ..............................................................................
Open Circuit
Crossed Circuits
Short/Overloaded Circuit
6.4 Activating Hazard Lights ................................................................
6.5 All Circuits On (Override) Mode ......................................................
PART 7: ABS BLINK CODE DIAGNOSTICS ..........................................
7.1 Meritor/WABCO Blink Codes .........................................................
7.2 Haldex Blink Codes ........................................................................
7.3 Bendix Blink Codes .......................................................................
PART 8: MAINTENANCE ........................................................................
8.1 Maintenance and Storage .............................................................
8.2 Instructions for In- and Out-of-Warranty Repairs ..........................
PART 9: TROUBLESHOOTING ..............................................................
9.1 FAQ ................................................................................................
9.2 Common System Checks ..............................................................
9.3 Common Troubleshooting Solutions .............................................
PART 10: TYPICAL TRAILER WIRING .....................................................
PART 11: OPTIONAL ACCESSORIES AND RELATED PRODUCTS ......
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1
PART 1: SAFETY INSTRUCTIONS
1.1 Important Information
Itisimportanttoread,understandandfollowallsafetymessagesandinstructions
printedinthismanualandontheequipmentbeforeoperating.Ifsafetyinformation
is not heeded, serious injury or death to the operator or bystanders may occur.
Danger
Indicates a hazardous situation, if not avoided, will result in death or serious injury. The
possible hazards are shown in the adjoining symbols or explained in the text.
Warning
Indicates a hazardous situation, if not avoided, could result in death or serious injury.
The possible hazards are shown in the adjoining symbols or explained in the text.
Caution
Indicates a hazardous situation, if not avoided, may result in minor or major injury. The
possible hazards are shown in the adjoining symbols or explained in the text.
The following safety alert symbols are used in this manual.
Potential burn hazard. Sparks from electrical shorts can ignite ammable
liquids such as fuel or oil. Heat from electrical overloads can cause re hazards.
Potential electrical hazard. Batteries have enough electrical energy
potential to ignite ammable liquids such as fuel or oil. Wire overloads can cause
electrical failures. Shock hazard exists.
Potential explosive air hazard. Pneumatic pressures used with this
equipment can cause explosive failures on damaged equipment.
Potential eye hazard. Wear OSHA approved safety glasses. Battery acid
and high air pressures create hazardous situations for eyes.
Potential chemical burn hazard. Wear protective gloves. Battery acid is
corrosive and can cause skin damage.
Potential electrical hazard. Electrical energy can cause heat and burn
hazards.
 Potentialrehazard. Use caution with ammable liquids such as fuel and
oil. Electrical shorts can ignite ammable liquids and wiring.
Important information is stated.
Symbol 1:
Symbol 2:
Symbol 3:
Symbol 4:
Symbol 5:
Symbol 6:
Symbol 7:
Symbol 8:

2
1.2 Battery Gases, Tester Preparation and Tester/Charger Location
Risk of Explosion
• Gases produced by a battery are highly explosive.
• Wear safety goggles and protective clothing,
both users and bystanders.
• Use in an area having at least four air changes
per hour.
• Read, understand and follow all instructions
for charger, battery, vehicle and any equipment
used near battery and charger.
• Do not smoke, strike a match, place metal tools on battery or cause a spark in
the vicinity of the battery. When removing battery cables, remove the ground
cable rst.
• Clean terminals before charging battery. During cleaning, keep corrosive
particles from eyes, nose and mouth. Use baking soda and water to neutralize
acid and help eliminate airborne corrosion.
• Never allow clamps on charger cables to touch each other.
• Do not expose tester or charger to rain, snow, or wet conditions.
• Do not allow battery gases or acid to contact MUTT®cabinet. Do not place
charger directly above or below battery.
• Fill battery to level specied by battery manufacturer using distilled water.
• Do not remove cell caps while charging per manufacturer’s instructions.
• Make sure tester cable clamps make tight connections.
• Battery explosion can cause injury.

1.3 General Charger Use
Risk of Electric Shock and Fire
• Before connecting charger to unit, make sure
controls are set to OFF.
• Do not operate charger with damaged cord
or plug. Replace cord or plug immediately if
damage occurs.
• Position power cord and charger cables away
from the hood, doors and hot or moving engine
parts where they could be damaged.
• Unplug power cord by grasping and pulling on the plug, rather than the cord
when disconnecting charger from outlet.
• Unplug power cord from outlet before cleaning or maintaining tester and char-
ger. Turning off controls does not reduce the risk of electric shock.
• Do not operate charger after a sharp impact, drop or any other damage. Do not
disassemble charger.
• Use only recommended attachments.
• Do not charge a frozen battery.
• Do not overcharge a battery.
• Electric shock or re can cause injury.
Risk of Entanglement
• Keep yourself, clothing and battery charger leads clear of moving parts such as
fan blades, pulleys, hood and doors.
• Moving parts can cause injury.
Risk of Burns
• Batteries can produce short circuit current high enough to weld jewelry such
as rings, bracelets and watches. You must remove them before working near
batteries.
• Short circuits can cause injury.
DO NOT
Plug Directly Into
AC Wall Outlet
3

4
PART 2: WHAT’S INCLUDED
Use the Provided Reference Numbers When
Ordering Products and Parts Above
Toll Free: 888-786-7899
3-Way Trailer Adapter
#8000
500mA Battery Charger
#CHR0001
Included Parts and Accessories:
12-Button Remote Control
#MUT-RM12-4100
Mobile Universal Trailer Tester TECH SUPPORT: 845-679-4500
BATTERY
OFF
EXTERNAL
POWER
SOURCE
PROGRAM REMOTE:
Hold the TAIL/TAG button for 2 seconds while
powering up unit.
AUTO CYCLE:
Press and release the control knob.
ALL CIRCUITS ON:
Hold down the control knob for 10 seconds or the
ALL ON button on the remote.
*ACCESS ABS BLINK CODES:
Refer to ABS Manufacturer manual to determine
mfg. sequence.
PIN CONFIGURATION MODE:
Selecting trailer type changes pin configuration on
panel and remote. See manual for more details.
VISIBLE ALERTS:
Ground Integrity: During startup,
all circuits blinking indicate poor
ground pin or chassis ground problem.
Individual circuit(s) blinking indicates
bad return ground for that circuit.
(Check cable/pin connection.)
Open Circuit: Blinking circuit with
audible alert indicates disconnected
or open circuit.
Crossed Circuit: Selected circuit is
illuminated and crossed circuit(s)
blinks with audible alert.
OVERLOAD
OPEN CIRCUIT
REVERSE POLARITY
OFF ON
MUTE
AUTO
CYCLE VOLTAGE
INDICATOR
GROUND
INTEGRITY
ABS
12V +
BRAKE LIGHTS
ELEC BRAKES
TAIL/TAG
TAIL/TAG RIGHT TURN
RIGHT TURN
BRAKE
LIGHTS
LEFT TRUN
LEFT TURN
CLEARANCE
REVERSE
TRAILER TYPE
7 SPADE
6/5/4 PIN
7-WAY
ROUND PIN
FUSE
www.ipatools.com
010 20
30
DC
AMPERES
MADE IN
USA
PROUDLY
MADE IN
USA
*ABS
Warning
Indicators
Fuse
Control
Knob
Ammeter
7-Way
Spade Socket
Power
Switch
Mute
Switch Trailer Type Switch
Electrical
Testing Panel
7-Way
Round Socket

5
PART 3: SET-UP
3.1Specications
Connection Type: 7-Way Round, 7-Way Flat, 6-Way Round. 4/5 Pin
Power Input: 12V DC
Ammeter: 1A—21A
Source Output: 20A @ 12V DC
Controls: Remote or Manual
Microprocessor: 2020 High-Speed
Materials: 16 ga. Powder-Coated Steel
Weight: 11.4 lbs
Dimensions: 15" L x 9.75" W x 9" H
3.2 Choosing a Battery
(Manufacturer’s Suggested Replacement: YUASA #YTX14 or Group 14 Equivalent)
• Battery Voltage: 12/24V DC
• Battery Type: Lead-Acid
• Battery Compartment Dimensions: 5 7/8" L x 5 3/4" H x 3 3/8" W
• Battery Protection: In-line 30 amp Fuse for Overcharge
3.3 Installing an Internal Battery
1. Remove the four 8/32" x 1/4" Phillips head
screws in the back of the MUTT®.
2. Slide out the battery tray.
3. Place the battery onto the tray with the battery terminals facing the front of the
unit. Attach the ring terminal on the red wire to the positive side of the battery
and tighten securely.
4. Cover positive terminal with the red boot.
5. Attach the ring terminal of the black wire to the negative battery terminal.
6. Carefully slide the tray into the tester. Use caution – DO NOT ALLOW the
positive battery terminal to contact the unit.
7. Reinstall screws to secure.
3.4 Auto Shutdown Feature
If left inactive for a period of 20 minutes, the SMART MUTT® X will enter a Sleep mode
and power down.
• A sound is emitted every 20 seconds during Sleep mode.
• Activation of the control knob will cancel Sleep mode.
DO NOT
Use 24 Volts on a Trailer
Wired for 12 Volts!

6
PART 4: PRETESTING CHECKLIST
The pretesting checklist should always be completed prior to using the
SMART MUTT®X.
Unit Placement
• Place the tester on a at, level surface.
Maintain Connectors
Dielectric grease should be used on all connections to avoid corrosion. If a bad
connection exists at the terminal junction, you may get an erroneous reading and the
MUTT®will not work properly.
• Make sure you have a solid connection in the socket.
• Be certain the 7 pins in each plug are clean and spread to the proper size.
• Always check the MUTT® connector pins at the side of the MUTT®for proper
expansion. Over time, the pins may bend in slightly resulting in a poor connection
between the connector and the cable ends. A at head screwdriver can be used
to expand the pins until a tight connection is made.
  TrailerCongurationSet-up
The SMART MUTT® X is a microprocessor controlled, diagnostic trailer tester
specically designed for testing lights and electric brakes on trailers with 4, 5, 6, 7
round pin and 7 spade pin type connections. Every time you power up the tester with
the Trailer Type switch in the 7-WAY SPADE 6/5/4 PIN position, the internal computer
wants to know which of these types of trailer connections you are testing. Note, this
phase is known as Trailer Conguration Set-Up and is indicated by a high speed
ickering of the LEDs surrounding the control knob only when in 7-WAY SPADE 6/5/4
PIN mode. If left untouched after 15 seconds, the tester will always default to a 7
spade pin conguration. However, if the user is testing a 4, 5 or 6 round pin type trailer
connection, this setting can be adjusted by rotating the control knob counterclockwise
to select the desired number of circuits. Trailer Conguration Set-Up is not initiated
when the unit is powered up in 7-WAY ROUND PIN mode.
Testing 4, 5, and 6 Round Pin Type Trailer Connections
The SMART MUTT® X is hard wired to a 7 spade pin connector, located on the side of
the tester. Each unit is supplied with a plug-in adapter, which will adapt the tester to 4,
5 and 6 round pin type connections. To test trailers with these types of connections,
the adapter must be plugged in line between the tester and the trailer. The instructions
above for Trailer Conguration Set-Up should be used for more efcient and accurate
testing.
Call 888-786-7899 with any technical questions.

7
PART 5: GENERAL CONTROLS AND OPERATIONS
5.1 Control Panel
A. Power Source Switch
Select between Internal Battery, External Power or Power Off.
Center: OFF (battery charge in this position only)
Up: Installed battery ON
Down: External power ON (power supply is an optional accessory)
B. Backlit 30 Amp Ammeter
Meter shows current draw of a selected circuit up to 30 amps.
C. Trouble Warning Indicators
Flashing red LEDs indicate problems that may exist in a selected circuit
including an overload, open circuit and reversed battery polarity.
D. Mute Switch
ON disables sound. OFF enables sound.
E. Auto Cycle Indicator
Illuminates when Auto Cycle mode is engaged.
F. Voltage Indicator
Shows supplied battery voltage integrity. Operating voltage range: 12/24 volt
DC. Red - charge battery immediately. Amber - charge battery soon. Green -
battery voltage within operating range.
G. Ground Integrity
A large green LED above the control knob indicates ground status. Ground
integrity is automatically veried when power is turned on.
H. Control Knob
Knob activates all electrical test modes and circuits to be diagnosed.
I. Circuit Indicators
The small green LEDs illuminate or blink in testing phase.
J. Trailer Type Switch
Selecting a mode changes wiring conguration on panel and remote.
K. 30 Amp Fuse Socket
Overload protection.
A
B
D
C
F
E
G
H
I
J
K

8
5.2 Left and Right Side Panels
A. 7-Way Spade Pin Socket
Receptacle used to connect your 7-Way Spade Pin Trailer to the MUTT®to test
electrical circuits.
B. 20 Amp Independent Power Input Source
For connecting external 12V DC 20 amp max. power supply. (Power supply is
an optional accessory, not for battery charging.)
C. 12V DC Battery Trickle Charger Input
For connecting the charger to the internal lithium ion battery for charging
purposes.
D. 7-Way Round Pin Socket
Receptacle used for connecting your 7-Way Round Pin Trailer to the MUTT®to
test electrical circuits.
E. Chassis Ground Outlet
For connecting a chassis ground cable to the MUTT®when testing trailers
using the frame or body for ground connections instead of the ground pin in
the harness.
A B DC E

9
12-Button Remote Control
5.3 Using the 12-Button Remote Control
The included 12-button remote control is preprogrammed to your SMART MUTT® X
and should never lose its programming. In the event that you suspect your remote
has lost its programming, contact technical support at 888-786-7899 or email
[email protected].
The supplied key fob battery for the remote control is 12V, Alkaline Energizer type A23.
A Gold Peak type 23A or Duracell MN21 battery can also be used.
How to Program the 12-Button Remote
1. Press and hold the TAIL/TAG button while
turning the Trailer Tester’s main power on.
2. Continue to hold the button for 2 seconds and
then release.
3. Your remote control is now programmed.
How to Use the 12-Button Remote
Circuit Selection
Pressing each button will select the corresponding
circuit on the MUTT®. Some buttons have different
options based on which trailer type you are testing,
represented by white and green text. Reference the
testers face panel for specific trailer type functions.
(Pressing and holding the ABS/12V+ or Brake Light button will latch both circuits on.)
WARNING: Inclement weather, nearby power transformers and closely parked
trailers may reduce the remote signal.

10
PART 6: ELECTRICAL/LIGHTING TESTING
Complete the pretesting checklist prior to all testing procedures.
The SMART MUTT® X is microprocessor controlled and features a special diagnostic
rmware, designed to speed up your inspection process. 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 conrm that each individual light bulb is properly illuminating.
6.1 Selecting a Circuit
Circuits can be selected for testing manually, via remote control or by initiating Auto
Cycle Mode.
Manually
1. Turn the control knob to select a circuit. The
control knob is automatically set to Ground
Integrity when power is turned on.
12-Button Remote Control
1. Press and release the desired circuit’s button.
2. Press the NEXT CIRCUIT button to cycle
through circuits.
Auto Cycle Mode
Auto Cycle Mode automatically tests one circuit at a time in a clockwise rotation.
Manually
1. Press and release the control knob. The
Auto Cycle indicator should illuminate.
2. A ve-second delay commences between
circuit sections.
3. Circuits are automatically tested one at a
time in a clockwise rotation.
4. To cancel Auto Cycle mode, momentarily press or turn the control knob.
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.

11
12-Button Remote Control
1. Press and release the AUTO CYCLE button on the 12-button
remote. The Auto Cycle indicator should illuminate.
2. A ve-second delay commences between circuit sections.
3. Circuits are automatically tested one at a time in a
clockwise rotation.
4. To cancel Auto Cycle mode, momentarily press or turn the control knob.
6.2 Ground Integrity Test
Each time the SMART MUTT® X is powered on, it automatically runs a Ground Integrity
Test. A good ground connection must be established for the MUTT®to operate a
trailer’s electrical system.
1. Immediately after power up, the green lights around the control knob will
illuminate.
2. A solid/healthy ground connection is indicated by a steadily illuminated Ground
Integrity Indicator.
3. Bad/poor ground or bad cable condition is indicated by all of the LEDs blinking
simultaneously.
4. When one or more green circuit LEDs blink while the Ground Integrity indicator
is steadily illuminated, it indicates that a solid ground has been established, but
an open circuit has been detected. Refer to OPEN CIRCUIT on the next page.
Chassis and Pin Grounds
A poor ground warning may be an indication that the connected trailer is only wired for
chassis ground. There are two ground types. 1) Pin Ground: The ground wire from each
light assembly is wired through the main harness up into the trailer plug. 2) Chassis
Ground: The ground wire from each light assembly is grounded directly to the trailer
chassis. Ground with the truck is established at the king pin.
NOTE: The SMART MUTT® X cannot monitor ground condition while selecting
circuits. A sudden loss of ground while testing circuits will present as open circuits on
each selected circuit. To conrm ground status, turn control knob back to the ground
position. While in ground position, the SMART MUTT® X continuously monitors the
ground status.
NOTE: DO NOT assume a bad ground warning is a result of a faulty trailer. Check
cable connection.
NOTE: Auto Cycle mode does not work when ABS or Brake Light Circuits are selected.
GOOD GROUND BAD/POOR GROUND

12
Establishing a Chassis Ground
1. To simulate the king pin on a chassis ground
connection and bypass the ground integrity fault,
plug a chassis ground cable into the MUTT®’s
Chassis Ground Outlet.
2. Attach the other end of the chassis ground cable
to the chassis of the trailer.
3. Be sure that you are attaching to a clean, dry
metal for an effective ground.
6.3 Fault Indication
Open Circuit
The SMART MUTT® X senses no load which is often the symptom of a disconnected
wire, cut wire, poor pin connection or bad return ground. Open circuits can be detected
in two ways.
1. During Ground Integrity Test: An individual circuit will blink and no audible alerts
will be present.
2. During circuit selection: The selected circuit’s LED will blink, while simultaneously
the Open Circuit indicator will ash. The MUTT®will also provide an audible
alert (beep).
Example: The SMART MUTT®X detects an open circuit in the Clearance circuit. The
Clearance LED will blink, the Open Circuit indicator will ash and the MUTT®will beep.
DO NOT
Assume that a Bad
GroundWarningisa
Result of a Faulty Trailer.
Check Cable Connection.
Example: Open Circuit in Clearance Light
NOTE: Open Circuit indicator will only illuminate during circuit selection.

13
Crossed Circuits
The SMART MUTT® Xindicates that two or more circuits are back feeding or crossed.
This can be a symptom of two wires in the same harness wearing through their
insulated coating and connecting.
1. When a crossed circuit is identied, the selected circuit LED will illuminate
steadily and the circuit it is crossed with will ash. The SMART MUTT® X will
also provide an audible alert (beep).
Example: The SMART MUTT®X detects that the Clearance and Tail/Tag are crossed
while the Clearance circuit is selected. The Clearance LED will illuminate, the Tail/Tag
LED will ash and the MUTT®will beep.
Short/Overloaded Circuit
Short circuits or overloads can occur when a positive, hot wire touches ground. They
can also occur due to faulty lights or connectors.
1. If a short or overloaded circuit is suspected, the SMART MUTT® X will instantly
stop powering the circuit.
2. The Overload Warning indicator will then ash, along with the selected circuit’s
LED. The ammeter needle will also max out and return to 0.
3. The SMART MUTT® X will now automatically enter Pulsar® mode. During Pulsar®
mode, the MUTT®will attempt to reapply power to the faulty circuit every three-
seconds for an indenite period of time. After power is applied, if a short is still
present, steps 1-3 will automatically repeat.
Example: The SMART MUTT®X detects a short in the Clearance circuit. The Clearance
LED and Overload indicator will ash and a warning beep will sound. The MUTT®will
now enter Pulsar®mode.
NOTE: In some cases, a crossed circuit may be a normal function of advanced
diagnostic testing, such as with certain ABS systems.
NOTE: PULSAR® mode can be a useful tool for nding dead and intermittent shorts.
Example: Crossed Circuits in Clearance and Tail/Tag Lights
Example: Short Circuit in the Clearance Light

14
6.4 Activating Hazard Lights
The four-way ashers on the trailer can be activated with the 12-button remote control.
12-Button Remote Control
1. To activate/deactivate, press the HAZARDS button.
6.5 All Circuits On (Override) Mode
All Circuits On mode will engage all electrical circuits at the same time. While short
circuit sensing is operational in this mode, if a short circuit is found, the SMART
MUTT® X will not be able to identify which circuit is the cause of the short. Open and
crossed circuit sensing is not operational in this mode.
On trailers using incandescent bulbs, All Circuits On mode will typically result in an
overload because the amperage draw will exceed the maximum of 20 amps.
All Circuits On mode can be accessed manually or by remote control.
Manually
1. To activate, press and hold the control knob for ten seconds. Listen for beep,
then release.
2. To cancel, press or turn the control knob.
12-Button Remote Control
1. To activate, press the ALL CIRCUITS
ON button. To deactivate, press the ALL
CIRCUITS ON button again or press the
ALL CIRCUITS OFF button.
NOTE: Does not work when ABS or Brake Light circuits are selected.
Press and Hold Control Knob to Activate

15
PART 7: ABS BLINK CODE DIAGNOSTICS
The SMART MUTT® X can be used to access ABS Blink Codes on trailers equipped
with ABS systems. Trailers equipped with ABS feature an Electronic 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 SMART MUTT® X 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 specic 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 specic 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 specic ABS manufacturer manuals for more detailed information
and any discrepancies in their literature shall supersede the following directions.

16
7.1 Meritor/WABCO Blink Codes
To access Meritor/WABCO blink codes, you must select the Auxiliary circuit to power
ON/OFF/ON in one second intervals using the following directions:
1. Make sure trailer is stationary and wheels are properly chocked.
2. On the SMART MUTT® X, turn the control knob to the Auxiliary circuit. Pause
one second.
3. Turn the control knob to the Ground Integrity indicator (one position to the
right). Pause one second.
4. Turn the control knob back to the Auxiliary circuit (one position to the left).
5. Count the number of blinks on the trailer ABS lamp. Use the chart below for
specic fault information.
For diagnostic and troubleshooting assistance, call Meritor WABCO at 1-800-535-5560.
Blink
Code Problem Area Action
3 Sensor BUI Determine sensor location. Check sensor installation.
Make necessary repairs.
4Sensor YEI Determine sensor location. Check senor installation. Make
necessary repairs.
5 Sensor BU2 Determine sensor location. Check sensor installation.
Make necessary repairs.
6Sensor YE2 Verify proper electrical modulator installation. Check power
supply. Make necessary corrections.
7External ABS Modulator
Valve
Verify proper electrical modulator installation. Check power
supply. Make necessary corrections.
9Internal modulator failure
inlet valve #2
Verify proper installation. If code continues, contact Meritor/
WABCO for assistance.
10 Internal modulator failure
inlet valve #1
Verify proper installation. If code continues, contact Meritor/
WABCO for assistance.
11 Internal modulator failure
inlet valve
Verify proper installation. If code continues, contact Meritor/
WABCO for assistance.
14 Power Supply Verify proper electrical installation. Check power supply.
Make necessary corrections.
15 ECU Failure Verify proper installation. If code continues, contact Meritor/
WABCO for assistance.
16 SAE JI 708 Failure Internal failure, contact Meritor/WABCO.
17 SAE J2497 (PLC) Failure Internal failure, contact Meritor/WABCO.
18 Generic I/O Failure Verify proper electrical installation. Check power supply.
Make necessary corrections.

17
7.2 Haldex Blink Codes
To access Haldex Blink Codes, you must select the Brake Light circuit and press the
control knob to cycle the Auxiliary circuit the appropriate number of times using the
following directions:
See table below for modes and sequences:
1. Make sure trailer is stationary and wheels are properly chocked.
2. On the SMART MUTT® X, turn the control knob to select Brake Light circuit.
3. Push the control knob to cycle Auxiliary circuit ON for each desired ignition
cycle. Auxiliary circuit will ash.
4. Each Ignition Cycle must end with both Brake Light and Auxiliary circuits
simultaneously powered. To do this, press and hold the control knob for ve
seconds during the last ON cycle.
5. Count the number of blinks on trailer ABS lamp; see the following charts
(pg. 18-21) for specic fault info.
Mode Description Ignition Cycles (Hold 1 Second ON/OFF)
1 Simple/Wheel Speed Mode ON, off, ON
2 Active Faults Mode ON, off, ON, off, ON
3 Stored Faults/Clear Mode ON, off, ON, off, ON, off, ON
4Conguration Mode ON, off, ON, off, ON, off, ON, off, ON
Item Flash Count Actual Fault
System OK Light Stays On 07
Sensor 1A 1 Flash 01
Sensor 1B 2 Flashes 02
Sensor 2A 3 Flashes 03
Sensor 2B 4 Flashes 04
Sensor 3A 5 Flashes 05
Sensor 3B 6 Flashes 06
Red Valve 7 Flashes 61, 67, 71, 77, 81, & 87
Blue Valve 8 Flashes 62, 68, 72, 78, 82, & 88
Yellow Valve 9 Flashes 63, 69, 73, 79, 83, & 89
Low Voltage 10 Flashes 90
ECU Failure 11 Flashes 93, 99, & E-Codes