SmarTire Trailer-Link TPMS ™ Tire Pressure Monitoring System Operator’s Manual This booklet contains important operational and safety information that benefits you and subsequent owners.
Sources of Additional Information about your SmarTire ® System by Bendix™ CVS Consult the vehicle manufacturer’s documentation. Visit www.bendix.com for free downloads of these publications from the Literature Center at www.bendix.com. BW2799 SmarTire Tire Pressure Monitoring System (TPMS) Operator’s Manual BW2809 SmarTire TPMS Hand Tool Manual BW2820 SmarTire Low Frequency (LF) Tool Users Manual BS2822 SmarTire TPMS Walk Around Card or Contact the Bendix Tech Team at techteam@bendix.
INDEX About the SmarTire® TPMS and SmarTire Trailer-Link™ TPMS . . . . . . . . . 5 Section A - System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.0 System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1 System Components . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.2 Maintenance Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.
GENERAL SAFETY GUIDELINES WARNING! PLEASE READ AND FOLLOW THESE INSTRUCTIONS TO AVOID PERSONAL INJURY OR DEATH: When working on or around a vehicle, the following guidelines should be observed AT ALL TIMES: ▲ Park the vehicle on a level surface, apply the parking brakes and always block the wheels. Always wear personal protection equipment. ▲ Stop the engine and remove the ignition key when working under or around the vehicle.
About the SmarTire® Tire Pressure Monitoring System (TPMS) and SmarTire Trailer-Link™ TPMS Full SmarTire® TPMS System Overview Thank you for purchasing the SmarTire Trailer-Link™ Tire Pressure Monitoring System (TPMS) by Bendix CVS. With SmarTire Trailer-Link TPMS onboard, your vehicle is equipped with a wireless communication network allowing seamless integration of wireless tire pressure sensing technology.
IMPORTANT NOTICE: PLEASE READ To prevent sensor damage, when mounting and dismounting tires that have SmarTire® TPMS tire sensors, be sure that the maintenance facility is aware that a tire pressure monitoring system is installed. If any rims are relocated or replaced, be sure to follow the SmarTire by Bendix system guidelines to permit the system to re-learn the tire sensor positions.
Section A - System Overview 1.0 System Overview 1.1 System Components Harnesses Stainless Steel Tire Straps Tire Sensors and Cradles Trailer-Link ECU Maintenance Hand tool Figure 1 - System Components and Hand Tool ECU. The Electronic Control Unit (ECU) of the SmarTire Trailer-Link™ Tire Pressure Monitoring System receives data transmissions from individual tire sensors mounted on each trailer wheel. The information received is compared to user-defined settings.
1.3 How Does The SmarTire TrailerLink™ TPMS System Work? Full SmarTire® TPMS System Overview 1. The SmarTire Trailer-Link™ ECU creates a wireless bubble around the trailer, allowing it to sense and transfer trailer tire data to a SmarTire®equipped tractor. 2. Tire sensors mounted on each trailer wheel measure tire pressure and temperature every twelve (12) seconds and wirelessly transmit tire data every three to five minutes. 3.
1.4 Fundamentally, Why Is Temperature Monitoring Important? The Pressure/Temperature Relationship Tire manufacturers specify that tire pressures should be checked and adjusted when a tire is “cold”, but most people may not know why, or even what a “cold tire” is. The temperature of a tire actually has a significant impact on its inflation pressure. According to tire manufacturers, a tire is considered to be “cold” when its temperature is 65°F (18°C).
The charts below illustrate the equivalent inflation values for a series of Cold Inflation Pressures (CIPs) at various temperatures. The temperature values represent the temperature of the air contained inside the tire. This temperature can be estimated for a cold tire using the outside, ambient temperature. Chart 1 Chart 2 The charts above are to be used as a guide only. Always refer to the tire and/or vehicle manufacturer’s recommendations for minimum CIPs.
Thermal Equilibrium As a vehicle moves, its tires naturally heat up due to friction from the road and the flexing of its side-walls. Weight, vehicle speed and a tire’s starting inflation pressure all have an impact on how much, and how quickly, heat is generated. As the tire generates heat, its pressure increases, causing a reduction in side-wall flexing.
The advantages of temperature compensation are even more dramatic when a tire has a slow leak. A tire that is constantly losing pressure will not be able to reach thermal equilibrium because the contained air simply cannot expand enough to generate the required pressure, regardless of how hot the tire becomes. Since the leak is slow, the tire may appear over an extended period of time to be properly inflated when it is actually dangerously underinflated and operating well above its temperature capacity.
IMPORTANT READ THESE INSTRUCTIONS PRIOR TO INSTALLATION This SmartTire Trailer-Link™ TPMS kit is pre-programmed and ready to use, subject to your application: ●● The sensors have been PRE-ASSIGNED TO WHEEL POSITIONS and are identified on each unit with a position label (P1, P2, P3, etc.) – install the sensors as shown in Figure 1.
Section B - System Installation – Tire Sensors 3.0 System Installation: Tire Sensors 3.1 Sensor Overview The SmarTire® TPMS sensor monitors tire pressure and temperature every twelve (12) seconds and transmits tire data every three (3) to five (5) minutes. If a pressure change of 3 PSI is detected, the sensor will not wait for the next regular transmission and will transmit tire data immediately. The sensor has an estimated battery life of five (5) years. 3.1.
4. Tire changing equipment 5. Tire balancing equipment 3.3 Tire Sensor Installation 1. Remove the wheel from the vehicle and then remove the tire. 2. Wrap the strap around the rim in the lowest point of the drop center well and mark it 1” (2.5 cm) past the worm gear. Cut the strap at the mark. Excess strap MUST be removed or it will break-off and damage the tire. 3. Slide on the sensor. 1" Figure 4 4. 5.
3.4 Re-mounting Tires After A Sensor Has Been Installed Please read this section carefully and follow each step precisely to ensure you do not damage the sensor when mounting the tire. If steps are not taken to avoid the sensor located in the drop center well of the rim, it can be damaged by tire beads as the tire is mounted. 3.4.1 Internal Tire Sensor Servicing SmarTire® TPMS tire sensors are designed to be serviceable if damage occurs during the mounting or de-mounting process.
3.4.2 Re-Mounting Tires Using Tire Irons To avoid damaging the sensor, simply mount the tire ensuring that the last part of the bead to slip over the flange happens directly at the sensor. Start at one end of the tire and work towards the opposite end with the tire oriented so that the beads are first pushed under the rim flange directly opposite the sensor (1) and then worked over the flange toward the sensor (2). The bead will finally slip over the rim flange at the sensor without contacting it (3).
3.4.3 Re-Mounting Commercial Tires Using a Vertical Tire Machine 1. Place the rim on the machine so that the rim flange clamp is at the 12 o’clock position, the sensor is at the 2 o’clock position and the mounting hook is at the 8 o’clock position. Rim Flange Clamp Sensor Figure 8 2. Advance the wheel clockwise to pass both beads over the rim flange simultaneously. The tire should mount onto the wheel without contacting the sensor. Mounting Hook Figure 9 3.4.
2. Place the tire on the rim with the bottom bead under the flange at the 6 o’clock position with the mounting shoe at the 9 o’clock position. 3. Advance the mounting shoe clockwise to pass the lower bead over the rim flange. 4. Return the mounting shoe to the 9 o’clock position, depress the upper bead under the rim flange at the 6 o’clock position and advance the mounting shoe clockwise until the second bead is completely mounted. 3.4.
3. Advance the turn-table clockwise using the mount head to guide the rest of the bottom bead over the flange and on to the rim. When assembled correctly, the bead will slip over the flange without contacting the sensor. 4. Repeat for the top bead. Do not allow the pinch point to slip as the rim rotates or the sensor could be broken. 5.
3.5.2 Using a Tire Mounting Machine 1. After removing the deflated tire / wheel assembly from the vehicle, unseat the beads directly opposite the sensor and valve stem. The sensor should be located at the valve stem (the rim mounted decal should also indicate the sensor’s location). Do not break the bead at or near the sensor / valve stem. 2. Position the lubricated tire / wheel assembly on the machine so that the dismount head and the sensor are approximately aligned. 3.
3.6 Tire Sensor Specifications Tire Sensor (with cradle) Power Internal Lithium Battery Weight 1.89 oz (58.7 g) Dimensions 3.58 x 1.65 x 1.34 in. (91 x 42 x 34 mm) Operating Temperature (-40º C to 125º C) -40º F to 257º F Pressure Accuracy at 0ºC to 50º C +/- 2.39 PSI (0.65 bar) Maximum Cold Inflation Pressure 160 PSI (11.03 bar) Maximum Sensing Pressure 188 PSI (13.
Section C: System Installation – Components and Programming 4.0 Installing The SmarTire Trailer-Link™ System The following steps describe the installation of the SmarTire Trailer-Link system components and are intended for trailers built after 1998 with integrated power supply lines and ABS modules already equipped. Installation of the TPMS sensors onto wheels is excluded in this section. For additional harness, component, and sensor installation details, refer to sections B and E. CAUTION.
Step 3. Mount the SmarTire Trailer-Link™ ECU against the bracket by using the two provided hex bolt sets. Ensure that the ECU module’s flat top is facing parallel to the trailer tires with the harness connector facing away from the driving direction. See mounting example below; arrow shows driving direction of the trailer. Figure 15 Step 4. Find the ABS power supply on the underside of the trailer.
Detail C-C Detail B-B E E C B C A B D A D Packard Recpt Packard plug 15 Inch C B P1 P2 Packard Plug C B Packard Recpt A A P3 Detail A-A Figure 16 - SmarTire Trailer-Link™ TPMS ABS Power Splice Part No: K075867 Step 6. After installing the ABS Power Splice harness, connect the 3-pin power connector, P3 in Figure 16 to the SmarTire Trailer-Link™ TPMS Wiring Harness, P3 in Figure 17.
In some cases, the supplied 6ft harness may not be sufficient for your installation. If this is the case, there is an optional 15 ft SmarTire Trailer-Link™ TPMS Harness Part No: K075869 available. Please contact your distributor to order this part. Step 7. Route the 4-pin diagnostic LED line to the side of the trailer or slider and secure the line every foot with zip ties.
4.1 Configuring & Customizing Your SmarTire Trailer-Link™ System During the installation process, the default settings for SmarTire Trailer-Link™ TPMS should be customized to the trailer by the installer. Using the SmarTire Trailer-Link Diagnostics Software within Bendix® ACom® Diagnostics 6.6 (or higher), alert thresholds can be made more or less sensitive and system settings can be adjusted to accommodate trailer changes and use.
4.2 SmarTire Trailer-Link™ Axle Cold Inflation Pressure (CIP) Adjustment Instructions 4.2.1 Equipment ●● SmarTire Trailer-Link™ Diagnostic Harness Kit K092501 ●● SmarTire® TPMS Maintenance Hand tool Kit 090.0011 4.2.2 Trailer CIP Programming Procedure The default CIP programmed into the SmarTire Trailer-Link ECU is 100 PSI for all axles. Each axle can be configured to have a unique CIP. If the case arises where different CIP values are required, the following programming procedure should be used.
6. When the Cold Inflation Pressure (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. Figure 21 7. Using the SmarTire Trailer-Link™ programming cable (Part Number K092501), connect the tool to the SmarTire Trailer-Link harness. Figure 22 8. Press the Check button to initiate programming.
4.2.3 Trailer Sensor ID Walk-Around Learn Procedure The following steps are only to be used for the SmarTire Trailer-Link™ ECU. When the tires are rotated or replaced on a trailer equipped with a SmarTire tire pressure monitoring system, the trailer TPMS module 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 SmarTire Trailer-Link ECU.
6. Using the SmarTire® TPMS 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 outer tire. Work in a U-shaped pattern around the trailer ending with the right side (curb side) forward outer tire.
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. Figure 30 Figure 31 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.
Figure 35 13. Press the Check button to begin downloading the new tire sensor IDs into the SmarTire Trailer-Link™ receiver. Figure 36 14. In the case of a programming error, the following screen is shown: Figure 37 15. If this occurs, ensure the SmarTire Trailer-Link™ ECU is powered and the connection from the tool to the SmarTire Trailer-Link harness is correct.
Section D: SmarTire Trailer-Link™ TPMS Display Options 5.0 Trailer Information Display Options 5.1 Tractor SmarTire Dash Display When the SmarTire Trailer-Link™ TPMS system is combined with a tractor equipped with the SmarTire® TPMS system, the trailer tires will be added in the form of ‘T’ axles following the last tractor axle on the 2-inch SmarTire dash display.
5.2 Tractor SmarTire® TPMS Dash Display Alerts After the SmarTire Trailer-Link™ connection has been established, the same three tire alerts, first level pressure, second level pressure and temperature alerts will be reported from the trailer that are reported from the tractormounted SmarTire® TPMS system. In addition, trailer tire sensor Diagnostic Trouble Codes (DTCs) and low battery alerts will also be reported.
TPMS Lamp Alerts (repeated for 1 Minute after Start-up, then ON or OFF depending on Priority) Cause and Solution 5x Blinks High & then Temperature ON after 1 min. Contained Air Temperature is over 85C/185F – Stop and allow tire to cool down, assess cause of temperature increase, possible brake, wheel bearing, or pressure issue Critical Low Pressure 4x Blinks & then ON after 1 min.
Section E: Additional Component Details 6.0 SmarTire Trailer-Link™ System Component Details 6.1 SmarTire Trailer-Link Module Specifications 6.1.1 Power, Mounting, and Environmental Requirements ●● Operating voltage range 9 – 36V ●● Typical current consumption (with no external loads) 30mA ●● 5A fuse is required between the main power line of the trailer link and the vehicle battery ●● Frequency 433.
6.1.2 SmarTire Trailer-Link™ Module Dimensions in Inches/[mm] 4.7 in. (119.5 mm) 5.28 in. (134 mm) 1.43 in. (36.4 mm) 4.0 in. (102 mm) Figure 41 6.1.
6.1.
6.1.5 SmarTire Trailer-Link™ Mounting Bracket Part No: K092801 (dimensions in inches) 1.2 in. 12 in. 3 in.
Section F: Troubleshooting 7.0 Troubleshooting Guide 7.1 SmarTire® TPMS Gauge Display And SmarTire Trailer-Link™ Module Q&A 7.1.1 Q: The SmarTire Trailer-Link™ module does not connect to the tractor. How can the SmarTire Trailer-Link module be diagnosed further? A: In the event that the SmarTire Trailer-Link ECU does not connect with the SmarTire vehicle-mounted TPMS system, follow these steps: 1. Check to make sure the SmarTire Trailer-Link ECU and vehicle-mounted TPMS ECU power up during start up.
7.1.2 Q: The gauge only displays dashes for the trailer tire information; there is no pressure, temperature, or deviation value. A: After the wireless link between the tractor SmarTire® TPMS ECU and the SmarTire Trailer-Link™ module has been established and the gauge has rebooted, trailer tire sensor data will be displayed within five (5) to eight (8) minutes on the gauge.
7.1.3 Q: When the Gauge first powers up, the alert lamp is blinking and a triangle with an exclamation mark is displayed. A few minutes later the alert clears and the display returns to normal. Was there an alert? A: During the start up sequence, the Gauge may clear itself of a previous alert condition or issue a momentary alert if a tire sensor has not reported in.
7.1.4 Q: What additional diagnostic information is available? A: The external LED part # K075866 is connected via the cable harness as a separate plug. Please refer to Section C, 4.0, step 7 for details on installation and location of this LED. The LED functions as described in the table below. Flashing with pattern will have periods of 0.3 second on and 0.3 second off repeating every 6 seconds. The number of high pulses in each 6–second window will be determined by a code.
Notes for Table 5 Note 1: This Diagnostic Trouble Code (DTC) occurs when the SmarTire Trailer-Link™ ECU has not received information from a tire sensor for 35 minutes. Possible causes are: 1. A tire has been replaced and a tire sensor is no longer in range of the ECU and is therefore no longer being received. In this situation the missing sensor must be replaced and the ECU reconfigured to add this new sensor. 2. There is poor radio frequency signal quality between the sensor and the ECU.
7.2 SmarTire® TPMS System Q&A 7.2.1 Q: A trailer tire continues to show a deviation value/alert although it was aired up properly. A: Set the Cold Inflation Pressure value (CIP) for each trailer axle to make sure it matches that of the intended inflation value for the tire in question. To do so, please refer to Section C 4.2.2 as well as the inflation tables in Section A under section 1.4.
it may simply be pressed into a new cradle for reuse. Avoid reusing the strap – worm gear could be damaged internally. c. If points a. and b. did not yield any results, the sensor is either missing or has been damaged. Remove the wheel carefully and inspect the inside tire lining for any damage if the sensor, strap, and cradle are found to have been damaged and non-operational. Replace strap, cradle, and sensor.
Appendix 1: Replacement Parts 8.0 Replacement Parts OE Part Number DESCRIPTION AM Bendix Part Number Bolt Kit for Receiver Mounting Plate 090.0017 090.0017N Bolt Kit for Mounting Trailer ECU to Plate 090.0020 090.0020N SmarTire Trailer-Link™ ECU 200.0189 200.0189N - 090.0011 SmarTire ® TPMS Maintenance Tool Kit - 090.0021 Tire Sensor with Cradle SmarTire LF Tool 201.0007 201.
Appendix 2: System Scope Of Use & Alerts 9.0 System Scope Of Use And Alerts This tire monitoring system does not in any way replace the need for regular maintenance of the tire pressures and visual inspection of tires for damages. 9.1 System Installation And Usage Warranty of the SmarTire® TPMS system requires that it has been properly installed and programmed by qualified personnel according to Bendix specifications.
9.4 Federal Communications Commission (FCC) Notice This device complies with part 15 of the FCC rules. 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. This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of the FCC rules.
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