BENDIX SmarTire User manual

SmarTire®TPMS Maintenance Hand Tool
Revision 1.04
User Manual
®

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Table of Contents
FCC Compliance Label.................................................................................................................4
User Interface Illustration.............................................................................................................4
Introduction...................................................................................................................................5
Testing Tire Sensors ....................................................................................................................5
Main Menu......................................................................................................................................6
Main Menu Icon Legend ...............................................................................................................7
Main Menu Details.........................................................................................................................7
Initiate Function........................................................................................................................................7
Example Display......................................................................................................................................8
Set-up Menu Icon Explanations...................................................................................................9
Maintenance Tool Software Update.....................................................................................................9
Maintenance Tool software update program......................................................................................10
Updating Maintenance Tool ...............................................................................................................10
psi/BAR/kPa/C/F - Measurement Units..................................................................................................10
Walk-Around Learn................................................................................................................................11
Walk-Around Learn Procedure...........................................................................................................11
Ambient Pressure Sensor Learn............................................................................................................13
Ambient Pressure Compensation ......................................................................................................13
TRAILER CIP.........................................................................................................................................14
Walk-Around Learn Procedure – For use with the TrailerLink™System Receiver ONLY.......................16
Sensor Learn .........................................................................................................................................19
Execution Icons...........................................................................................................................20
Troubleshooting Examples........................................................................................................21
Specifications..............................................................................................................................22
Hardware Specifications ........................................................................................................................22
General Specifications.......................................................................................................................22
Electrical Specifications .........................................................................................................................22
Communication Interfaces .................................................................................................................22
System Resources.............................................................................................................................22
Power.....................................................................................................................................................22
Radio Frequency Specifications.............................................................................................................23
Receiver Specifications......................................................................................................................23
LF Transmitter Specifications.............................................................................................................23
Antenna Type.....................................................................................................................................23
Mechanical Specifications......................................................................................................................23
Troubleshooting..........................................................................................................................24

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FCC Compliance Label
The FCC compliance label is located on the back of the Tool as shown in Figure 1.
Figure 1
This device complies with part 15 of the U.S. Federal Communications Commission (FCC) Rules and
with RSS-210 of Industry Canada. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause
undesired operation.
The term "IC:" before the radio certification number only signifies that Industry Canada technical
specifications were met.
User Interface Illustration
Figure 2

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Introduction
The tire pressure monitoring system consists of a tire pressure sensor inside the tire that transmits a
radio frequency (RF) signal containing a unique identification number (ID #), actual tire pressure, and
sensor battery condition to a module in the vehicle. The vehicle module receives and interprets the RF
signal from the sensor and warns the driver of low tire pressure.
Note: Early systems used one of two types of tire sensors: a tire sensor with an orange cover that had
a battery-saving “stationary mode”; and an “always on” tire sensor with a yellow cover. Later systems
exclusively use the yellow “always on” tire sensor.
It is important that the vehicle module knows exactly where each sensor is located on the vehicle so it
can indicate to the driver which tire has incorrect pressure. Note: Whenever the tires are serviced or
rotated, it is important that the vehicle module relearns the current position of each tire pressure
sensor and tire and wheel assembly. (See "Walk-Around Learn" on page 11.)
The tire pressure sensor responds with a signal for a period of time once the "activate" button is
pressed on the hand Tool.
The main menu of the Tool identifies three functions — the Initiate, Setup and Learn modes
respectively.
Testing Tire Sensors
The sensor test procedure is used to verify that the sensors can transmit valid data after they have
been activated with a low frequency (LF) transmission from the Tool. Refer to the vehicle service
manual for further diagnostic information. During this procedure, the Tool receives sensor
transmissions and displays the transmission data on the screen.
1. The antenna of the Tool should be placed against the sidewall above the wheel rim at the valve
stem location. Holding it too close to the rim (while initiating an inner tire sensor on a dual tire
configuration, may cause the outer tire sensor to be initiated as well).
2. Press and release the Initiate button on the Tool. The circling symbol indicates the Tool is scanning
for the sensor's transmission.
3. With the Tool in position, observe the screen and wait 3-5 seconds for the sensor's transmission to
be received. The screen should display an eight-digit ID number, tire pressure within 2 psi of actual
tire pressure, and the tire’s temperature.
4. Repeat the steps above for the remaining sensors to verify all sensors are operating properly.
NOTE: Sensor transmission data displayed on the Tool screen is erased each time the Initiate
or Learn functions are selected.

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Main Menu
Figure 3
Initiate Function
If the Initiate button is pressed, the Tool retrieves the sensor ID, pressure data and battery status from
the sensor which is displayed. Review the Application section of this guide (page 21) for more
information.
Setup Menu
If the Setup button is pressed, the Tool enters the Setup mode. Review the Application section of this
guide (page 21) for more information.
Learn Function
If the Learn button is pressed, the Tool learns/displays the sensor ID. Review the Application section
of this guide (page 21) for more information.

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Main Menu Icon Legend
ICON STATE DESCRIPTION
Handheld Battery Life
These icons indicate the battery life of the handheld device at startup.
This icon is located in the lower left area of the Tool display.
To continue, press the Check mark. To turn off the Tool and replace
the batteries, press the X.
Handheld Battery Life
This icon indicates the battery life of the handheld device.
Initiation This icon is used to indicate initiation. When the Initiate button is
selected, this icon starts to blink during transmission.
Initiation Failure
This icon indicates Tool initiation failure. This could be caused by
either a low battery in the wheel sensor or the Tool.
Set-up Menu
This icon is used to indicate the set-up menu. When this button is
selected and held for 2 seconds the set-up menu appears. Refer to
Menu Options for more information to set-up specific options.
Learn This icon is used to indicate sensor Learn. When the Learn button is
selected this icon starts to blink during transmission.
Main Menu Details
Initiate Function
If the Initiate button is pressed, the Tool will retrieve the sensor ID, pressure data and battery status
from the sensor that is displayed
The button should be pressed only once to activate.
The battery icon is used to show the battery status of the sensor.
Check icons indicates the sensor is OK.
The Wrench icon indicates the sensor is due for a change at next service.
If an error occurs, such as no information has been received, an error screen will appear. Should this
happen, retry the Initiate Function.

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Example Display
Figure 4
Set-up Menu Icon Legend
Selecting the Setup button commands the Tool into Setup mode.
ICON STATE DESCRIPTION
Software
Update
This icon indicates the software update option which allows
the user to download the latest software from a personal
computer.
psi/BAR/kPa/C/F Measurement
Units This option allows the user to change the units of the parameters displayed. See page 10.
Stored Sensor
Information
Retrieval
This option allows the user to refer to sensor information
stored in memory. Up to 100 sensors can be stored.
Delete Sensors
in Memory This option allows the user to delete all sensors stored in memory.
Walk-Around
Learn
This option is used for the Walk-Around Learn process.
When Walk-Around Learn is initiated the icon may
appear indicating a low battery in either the wheel sensor or
the Tool.
Ambient
Sensor Learn
This option is used to activate and store pressure
information from the ambient sensor to adjust the displayed
readings for changes in altitude.
TRAILER CIP Program CIP
Values
This function is used to program the cold inflation pressures
in the TrailerLink™system by Bendix CVS. Each axle can
be programmed with a different Cold Inflation Pressure
(CIP) value. Five (5) Axles are supported.
Return This option allows the user to return to the main window.

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Set-up Menu Icon Explanations
Software Update
The software update function is used to download the latest SmarTire®by Bendix CVS Maintenance
Tool software from a personal computer. The current and legacy versions of the SmarTire software are
available on the Manuals page of the www.SmarTire.com site and also on www.bendix.com.
Refer to update information supplied with future software updates.
Maintenance Tool Software Update
The Maintenance Tool function allows the user to easily upgrade the software in the field. The
following describes the items and steps required to carry out the download.
Item
Required Description
Custom
RS-232 Cable This cable is required to connect from the computer to the Tool (see Figure 6).
Computer
Microsoft®Windows®95, 98, 2000, XP Required
Refer to the User Manual for instructions on how to use this
software.
Update Tool
Software The software that is required to update the Tool to the latest features.
1. Attach the Maintenance Tool to a personal computer using the supplied custom RS-232 cable.
2. Select the "update" function on the Tool menu.
3. Open the Maintenance Tool software update program on the PC.
4. Note: Refer to the software update program for further information regarding the download
procedure.

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Maintenance Tool Software Update Program
Figure 5
Updating The Maintenance Tool
Figure 6
psi/BAR/kPa/C/F - Measurement Units
This function changes the measurement units of the parameters displayed: psi (pounds [pound-force]
per square inch), BAR (equal to 100 kilopascals), kPa (kilopascals), C (Celcius), and F (Fahrenheit).
Stored Sensor Information Retrieval
This function allows the user to refer to sensor information stored in the Tool memory. Up to 100
sensor readings can be stored & retrieved.

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Delete Sensors in Memory
This function is used to delete all sensor data stored in the Tool memory.
Walk-Around Learn
Walk-Around Learn Procedure
When the tires are rotated or replaced on a vehicle with a tire pressure monitoring system, the vehicle
must re-learn the position of each tire. The Walk-Around Learn procedure is used to activate each
sensor in its new location, store the sensor information, and download to the vehicle’s tire pressure
sensor receiver.
The unit will learn and store the location of each sensor as the user walks around the vehicle in a U-
shaped pattern, starting at the left side (looking forward) front-most tire location. If this is a dual tire
axle, start with the inner tire location. The new location information (tire IDs) for each sensor collected
is then uploaded to the receiver in the vehicle.
Perform the following steps:
1. Power up the vehicle’s tire pressure sensor receiver (see vehicle's service information for specific
details).
2. Press and hold the Setup button until a list of menu items appear.
3. Select the Walk-Around Learn icon.
4. Select the number of tires on the vehicle.
5. Activate each of the vehicle's wheel sensors in the proper order (counter-clockwise and inner tire
to outer tire, starting from the front left tire). See the "Walk-Around Learn" card included with the
Tool.
6. Hold the SmarTire®system Tool’s antenna against the tire’s upper sidewall in line with the valve
stem. Press the Learn button. The Tool is able to receive signals from an inner tire on a dual
tire configuration as well. Just hold the Tool in line with the circumferential position of the valve
stem of the inner wheel, as indicated in Figure 7.
Figure 7
7. Once the Tool has learned the tire sensor ID for the given position, it automatically switches to the
next tire position. Repeat until all the tires have been learned.

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8. After the last tire has been learned, press the down arrow. The Tool is now ready to transmit this
information to the vehicle’s tire pressure sensor receiver.
9. Using the supplied cable, connect the Tool to the diagnostic port of the tire pressure sensor
receiver. See Figure 8.
Figure 8
10. Press the check mark to begin downloading the new tire sensor IDs into the receiver.
11. If there is a communication error, the Tool displays an alert.
Check all the connections and try again.
12. If the Tool screen reverts back to the screen for entering the number of tires, then the number of
tires that was entered does not match the number of tires in the vehicle’s receiver.

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13. Make sure the number of tires entered on the Tool matches the number of tires being monitored
on the vehicle and then repeat the Walk-Around Learn procedure.
Ambient Pressure Sensor Learn
Ambient Pressure Sensor Learn is used to activate and store atmospheric pressure information from
the ambient sensor to compensate the displayed readings for changes in altitude.
Ambient Pressure Compensation
1. Scroll down the Menu and set the Maintenance Tool to Ambient Sensor Learn.
2. The previously learned ambient pressure appears on the first line of the screen. To learn a new
ambient sensor, press the learn button (center).
3. When a new sensor is detected, the second line of the screen will show the new ambient pressure
value received. Press the Check icon (left) to save this value as the new ambient pressure, or
press the Cancel icon (right) to discard this value and exit the screen.
Figure 9 Ambient Pressure Screen
Good
Cancel
Learn Button

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TRAILER COLD INFLATION PRESSURES (CIP)
Program CIP of Axles in TrailerLink™System by Bendix CVS ECU
CIP Programming Procedure
TPMS pressure warning levels are calculated as a percentage of a tire’s cold inflation pressure (CIP).
The default levels are 15% below the CIP (temperature compensated) for the first alert level, and 20%
below the CIP (non-temperature compensated) for the second warning level. The default CIP
programmed into the TrailerLink™system ECU is 100psi for all axles. Each axle can be configured to
have a unique CIP. If the case arises where different CIP values are required, the programming
procedure detailed on the next two pages should be used.
Perform the following steps:
1. Power-up the TrailerLink™system ECU. In most cases the trailer will need to be connected to
a tractor in order to receive power. The diagnostic LED on the TrailerLink system harness can
be viewed at power-up to ensure that the ECU has power.
2. Using the Maintenance Hand Tool, press and hold the Setup button until a list of menu
items appear.
3. Select the Trailer CIP menu item and press the Return button.
4. Use the Up and Down arrow buttons to configure the system for the total number of
axles installed on the trailer. A maximum of five (5) axles can be configured. When the correct
number of axles is selected, press the Return button.
5. Next, adjust the CIP value for each axle. The default value of 100psi will be shown on the
screen (if imperial units are selected).
Use the Up and Down arrow buttons to adjust the value of the CIP. Holding down the arrow buttons will
cause the values to increment at an increasing rate. Press the Return/Right button to advance to the next
axle.

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6. When the CIP values have been adjusted to the desired setting, press and hold the Return
button for 3 seconds until the programming screen bellow is displayed.
7. Using the TrailerLink™system programming cable (Part Number K092501), connect the Tool
to the TrailerLink system harness. Refer to the TrailerLink system manual (BW2920) for
instructions.
8. Press the Check button to initiate programming. You may also press the Return button
to return to the CIP adjustment screen or press the button to return to the main menu.
9. Once programming has been initiated, the following screen appears.
10. After successful programming, this screen is shown.
11. After programming, press the Return button to exit to the main menu.
ECU
HAND
TOOL
REMOVE LED
INSERT
HARNESS

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12. In the case of a programming error, the failure screen (shown below).
If this occurs, ensure the TrailerLink™system by Bendix ECU is powered and the connection
from the Tool to the TrailerLink system harness is correct. Press the Check button to retry
the operation; press the Return button to return to the CIP adjustment screen in step 5; or
press the button to abort the programming and return to the main menu.
Walk-Around Learn Procedure – For use with the TrailerLink™System
Receiver ONLY
When the tires are rotated or replaced on a trailer equipped with a tire pressure monitoring system, the
trailer receiver must be taught the new position of each sensor ID code. The Walk-Around Learn
procedure is used to activate each sensor in its new location, store the sensor information, and
download this information into the TrailerLink system receiver.
The Maintenance Hand Tool (P/N 090.0011) will learn and store the location of each sensor as the
user walks around the trailer in a U-Shaped pattern, starting at the left side (looking forward) front-
most tire location. If this is a dual-tire axle, start with the inner tire location. The new location
information (ID codes) for each sensor collected is then uploaded to the TrailerLink system receiver.
1. Power up the TrailerLink system receiver. In most cases the trailer will need to be connected
to a tractor in order to receive power. The diagnostic LED on the TrailerLink system harness
can be viewed at power up to ensure that the ECU has power.
2. Using the Maintenance Hand Tool, press and hold the Setup button until a list of menu
items appear.
3. Select the Walk-Around Learn icon and press the Return button.
4. Use the Up and Down arrow buttons to select the number of tires on the trailer.
5. When the correct number of tires is selected, press the Return button to initiate the Walk-
Around Learn procedure.

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6. Using the Maintenance Hand Tool, go to the first tire to be programmed and proceed to
activate each of the trailer’s tire pressure sensors in the proper order. Starting on the left side
(road side) of the trailer at the forward axle, begin by activating the inner tire and proceed to
work counterclockwise from inner to the outer tire. Work in a U-shaped pattern around the
trailer ending with the right side (curb side) forward outer tire. If using wide-based single tires,
simply start at the forward left side tire and work in a U-Shaped pattern around the trailer
ending with the right side forward tire. Some examples are shown below:
7. To activate the tire pressure sensor, hold the SmarTire
®
system Maintenance Hand Tool’s
antenna against the tire’s upper sidewall in-line with the valve stem. Press the Learn
button to learn the ID code of the sensor. In most cases, the Maintenance Hand Tool is able
to receive signals from the inner tire on the dual tire configuration as well. To program the
inner tire, hold the Tool in line with the circumferential position of the valve stem of the inner
wheel, as indicated below:
If the sensor is not programmed from this position, you many also place the Tool between
the dual tire assemblies and activate the sensor by placing the antenna near the tire
sidewall, in-line with the inner valve stem. Pressing the button will abort the Walk-
Around Learn procedure.
8. Once the Tool has learned the tire pressure sensor ID for the given position, it briefly displays
the received ID code and automatically switches to the next tire position.
Press the Learn button to initiate the next tire sensor. Repeat until all the tires have
been learned into the Tool. At this point you may also press the Up and Down arrow
buttons to select and view any previously learned wheel positions. If needed, you may
also re-program a tire position by simply selecting a previously learned position and
pressing the Learn button. Any previously learned sensor ID codes will be replaced by
the new ID code for that position.

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9. If a sensor failed to activate, this screen will be appear:
If this occurs, ensure that the Tool is placed at the correct position around the tire and
retry the sensor activation by pressing the Learn button.
10. If, while learning a particular wheel position, a tire pressure sensor ID code is received that is
already used in a different position, this "Duplicate ID" error screen is displayed:
11. Pressing the button will delete the received ID and the screen will go to the previously
learned position. Press the Learn button to learn the tire sensor into the position again.
12. Using the programming cable (Part Number K092501), connect the Tool to the TrailerLink™by
Bendix CVS system harness. Refer to the TrailerLink system manual for instructions.
13. Press the Check button to begin downloading the new tire sensor IDs into the TrailerLink™
by Bendix CVS system receiver.
ECU
HAND
TOOL
REMOVE LED
INSERT
HARNESS

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14. In the case of a programming error, the following screen is shown.
15. If this occurs, ensure the TrailerLink system ECU is powered and the connection from the Tool
to the TrailerLink system harness is correct. Press the Check button to retry the operation;
press the Return button to return to the learn procedure screen in step 5; or press the
button to abort the learn procedure and return to the main menu.
16. If the Tool screen reverts back to the screen for entering the number of tires, then the number
of tires entered does not match the number of tires currently programmed into the TrailerLink™
system receiver.
Make sure the number of tires entered on the Tool matches the number of tires being
monitored by the TrailerLink system receiver and then return to Step 4 and repeat the Walk-
Around Learn procedure.
Return
Selecting the Return icon moves the user to the previous menu screen.
Sensor Learn
To detect a sensor inside of a tire, press the Sensor Learn icon while holding the tip of the
Tool’s antenna against the sidewall of the tire above the air valve.

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Figure 10 Sensor Learn Screen
Execution Icons
ICON STATE DESCRIPTION
Confirm Good
X Cancel Cancels current action.
Back Back, Select, Enter, Return to main menu.
Scroll Scroll displayed data or selection.
Alert
Sensor information was not received.
If in Walk-Around Learn mode, the sensor ID
has already been designated to a tire location.
Sensor
Maintenance The battery of the tire pressure sensor may be low.
Data Not
Received Battery information not received by the Tool. Try again.
Battery
Set Up
Initiate