Bendix Commercial Vehicle Systems RXK123716 433.92 MHZ TRANSCEIVER or SmarTire TPMS 2.0 User Manual SmarTire Next GEN ECU Operator Manual

Bendix Commercial Vehicle Systems LLC 433.92 MHZ TRANSCEIVER or SmarTire TPMS 2.0 SmarTire Next GEN ECU Operator Manual

SmarTire Next GEN ECU Operator Manual

BW8002 Page 1 SmarTire Next GEN TPMS Operator’s Manual
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BW8002 Page 4 SMARTIRE™ TIRE PRESSURE MONITORING SYSTEM BY BENDIX CVS This vehicle is equipped with a SmarTire™ TPMS (Tire Pressure Monitoring System) which constantly monitors the pressure and temperature of each tire on your vehicle in order to provide real-time, on-demand tire status information and to warn of a tire-related problem before they become dangerous. KEY FEATURES OF SMARTIRE™:  Alerts are temperature compensated allowing you to know when your tires are at risk no matter how long you have been driving or how hot your tires are.  Real-time tire information displayed on the dash.  Alerts provide immediate visual and optional audible notifications of a tire problem.  Types of alerts and Icons: First Level Low/High Pressure Alert Second Level Critical Low Pressure Alert High Temperature Alert Importance of Tire Maintenance Proper tire maintenance is critically important for keeping tires rolling smoothly. When properly maintained and inflated, tires will provide shorter stopping distances, better vehicle handling in emergency situations and better fuel economy. Maintenance Tips for Long Tire Life:  Keep tires properly inflated at all times.  Visually inspect tires for injuries prior to each trip.  Match dual tires for size and ensure tire pressures are within 5 PSI of one another.  Re-tread tires before wear causes excessive belt damage or fatigue.
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BW8002 Page 6 Table of Contents SYSTEM OVERVIEW .............................................................................. 8 SYSTEM LAYOUT AND COMPONENTS.................................................. 8 THE PRESSURE TEMPERATURE RELATIONSHIP .................................... 10 COLD INFLATION PRESSURE (CIP) ................................................... 11 SMARTIRE™ TPMS TEMPERATURE COMPENSATION ........................ 12 SMARTIRE TPMS DISPLAY ................................................................. 14 SCREEN OVERVIEW ........................................................................ 14 SCREEN ICONS ............................................................................... 15 READY SCREEN ICONS ................................................................ 15 ALERT ICONS .............................................................................. 16 USING THE SMARTIRE TPMS SYSTEM ................................................ 17 GETTING STARTED ......................................................................... 17 HOW TO CHECK TIRE PRESSURE, TEMPERATURE AND PRESSURE DEVIATION ..................................................................................... 18 ALERTS & WARNINGS ......................................................................... 19 REACTING TO ALERTS & WARNINGS ................................................ 19 PRESSURE AND TEMPERATURE ALERTS ........................................... 19 FIRST ALERT LEVEL (FAL): PRESSURE DEVIATION ALERT ............. 19 SECOND ALERT LEVEL (SAL): CRITICAL LOW PRESSURE ALERT .... 20 HIGH TEMPERATURE ALERT ......................................................... 20 OTHER ALERTS AND WARNINGS ...................................................... 21 SENSOR FAULT ALERT ................................................................ 21 LOW SENSOR BATTERY ALERT .................................................... 21 NO TIRES PROGRAMMED ALERT .................................................. 22 QUICK SMARTIRE SYSTEM TROUBLESHOOTING ................................... 24 TROUBLESHOOTING TABLE .............................................................. 24 SENSOR FAULT TROUBLESHOOTING FLOW CHART ........................... 25
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BW8002 Page 8 SYSTEM OVERVIEW SYSTEM LAYOUT AND COMPONENTS Tire sensors mounted on each wheel measure tire pressure and temperature every 12 seconds and wirelessly transmit tire data every three to five minutes or if the sensor detects a pressure change of +/- 3 PSI, the sensor will transmit its data immediately. Real-time tire pressure and temperature information is displayed to the driver on demand via the SmarTire™ display or an OEM integrated display. If the tractor is connected to a trailer equipped with a SmarTire Next GEN-Trailer TPMS system, the trailer tires can also be displayed to the driver.
BW8002 Page 9 A) Next GEN Wireless Receiver/ECU - The Wireless Receiver/ECU forms the "brain" of the SmarTire™ platform. The receiver captures data transmissions from tire sensors mounted on each wheel which is then analyzed against programmed user-defined settings and, if it determines that a tire is under-inflated or running over temperature, an alert is triggered. B) Next GEN for Trailer ECU – The Trailer ECU captures data transmissions from tire sensors mounted on each trailer wheel. This data is then analyzed against programmed user-defined settings contained in the ECU and, if it determines that a tire is under-inflated or running over temperature, an alert is triggered and relayed to the Receiver/ECU mounted on the tractor and if equipped with the SmarTire Display or supported by the OEM dash, displays the alert in the cab of the tractor. C) SmarTire Display - Real-time tire pressure and temperature information is available to the driver on demand via the SmarTire™ display. If the system detects a tire problem, the display will alert the driver to the condition so corrective action can be taken. D) Tire Sensor - The tire sensor measures internal tire pressure and temperature every 12 seconds and transmits data every three to five minutes. If the system detects a pressure change of +/- 3 PSI or greater, it breaks its regular schedule and transmits data immediately. Each tire sensor is mounted in a break away cradle so that in the event of in-field damage, the sensor remains unbroken and the cradle can be replaced allowing the sensor to be reused. E) Optional Trailer Lamp - When a tire problem occurs on a connected trailer, the trailer lamp will indicate it to the driver. The lamp illuminates at the first sign of trouble, as well as flashes to indicate the type of problem found during power up.
BW8002 Page 10 THE PRESSURE TEMPERATURE RELATIONSHIP WHY IS IT IMPORTANT? Air naturally expands when heated and contracts when cooled. Inside a contained vessel such as a tire, this expansion and contraction causes a change in contained air pressure. As a tire heats up, its pressure will naturally increase and as it cools down, its pressure will naturally decrease. 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 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 recommended inflation values provided by vehicle manufacturers, fleet maintenance personnel or published load inflation tables are called ‘Cold Inflation Pressures’ (CIP) because they represent the correct amount of pressure a tire should be inflated to when it is “cold”. The reason that tires have cold inflation pressures set at specific temperatures is because a tire’s pressure will change relative to its temperature. Tire manufacturers never recommend inflating a tire to less than the specified cold inflation pressure. In extreme cases, the beads of a commercial tire can unseat if its pressure gets too low resulting in a catastrophic tire failure.
BW8002 Page 11 COLD INFLATION PRESSURE (CIP) The chart below illustrates the equivalent inflation values for a series of cold inflation pressures 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. Note: The Figure 1 is to be used as a guide only. Always refer to the tire or vehicle manufacturer’s recommendations for minimum cold inflation pressures. Figure 1
BW8002 Page 12 SMARTIRE™ TPMS TEMPERATURE COMPENSATION Since a tire’s contained air pressure naturally increases as a vehicle moves, it can be difficult to tell if a hot tire is under-inflated. Without some form of temperature compensation, a hot tire that is under- inflated might appear to be fine because it’s contained air pressure is at or above its cold inflation pressure (CIP). When checked using a handheld gauge or a tire monitoring system that does not measure operating temperature, an under-inflated tire can appear to be normal. When equipped with SmarTire™ TPMS tire sensors mounted inside the tire measure both tire pressure and temperature in order to provide “Temperature Compensated” pressure deviation values and alerts. The Deviation Value represents the amount of over or under inflation based on the tire’s current temperature. This value can be used to warn the driver of an under-inflated tire even if that tire’s actual contained air pressure is at or above its CIP. This value is also useful when maintaining the tire as it respresents how much air should be added or removed from the tire to bring it to the desired pressure, which the system calculates based on the programmed CIP value and the tire’s current temperature. The advantages of temperature compensation are even more dramatic when a tire has a slow leak. Since the leak is slow, the tire may appear over an extended period of time to be properly inflated when it is actually dangerously under-inflated and operating well above its temperature capacity. Eventually, the tire will become so hot that its structure will degrade and then fail in the form of a blow-out and / or tire fire. To further illustrate this concept, on the SmarTire display you may see that the pressure is above the CIP, but due to the temperature of the tire, the pressure is actually low or high depending on the Deviation value. The image below shows a tire with a CIP value of 110 PSI at ambient temperature. This is a properly aired tire and therefore the deviation value displayed is zero. 10psi65°F110psi Tire Air PressurePressure Deviation(Temperature Compensated)Tire Air Temperature As the vehicle is driven and the tires warm up, the pressure measured will change due to this natural increase in the temperature. The Pressure Deviation value compensates for this change in temperature and displays a zero value for a properly air tired. 10psi85°F115psi
BW8002 Page 13 Now consider an example where the tire is low. Again, due to this natural increase in pressure due to temperature as the tire warms up, the actual air pressure of the tire may appear to be correct because it is at 110 PSI which is the correct CIP, but in reality due to the increased temperature of the tire, the pressure is actually 5 PSI low. The image to the right shows what would be shown on the display. The pressure deviation value would indicate the amount of under inflation based on the temperature compensated value as described above. In this case, the Deviation Value is shown as - 5, meaning the tire is 5 psi low and should inflated to 115 PSI. If this value were +5, the tire would be 5 PSI high for this temperature. The Pressure Deviation value is a useful tool in maintaining tire pressures as it takes the guess work out of inflating tires, simply add the amount of air indicated until this value is 0 and your tires will be properly inflated! 1- 5psi85°F110psi
BW8002 Page 14 SMARTIRE TPMS DISPLAY Note: The following directions apply if vehicle is equipped with SmarTire display. For OEM please refer to the vehicle manual for further instructions. SCREEN OVERVIEW SmarTire displays tire status information by axle using various axle screens. Each axle programed in the display has a corresponding axle screen. The image below outlines the different screen elements. Axle Designator – This number represents the location of the axle you are viewing. The first axle on your vehicle starting at the front of the vehicle is “Axle 1”, the next axle is “Axle 2” and so forth. If you are towing a trailer equipped with SmarTire Trailer-Link TPMS, the trailer axles will be shown after the last axle on the tractor and will be displayed with a “T” in front of the number. For example the first axle on a trailer will be shown as “T1”. Just as with the tractor axles, the axles are numbered from the front of the trailer to the back so the second axle is displayed as “T2”. Tire Icon – This Icon indicates the axle’s tire configuration. One box on each side indicate single tires, two boxes on each side indicate dual tires. Selected Tire Icon – This indicates which tire is selected and which tire data is actively displayed on the screen (Pressure, Temperature and Deviation Value). 1- 5psi64°F110psiTire Air PressurePressure Deviation(Temperature Compensated)Tire Air TemperatureUnits of MeasureSelected Tire IconAxle Designator Tire IconScreen OverviewLeft Side Tires Right Side TiresLED for Alerts ScreenRight ButtonCenter ButtonLeft ButtonSingle Tire Axle12 Dual Tire Axle2 Sensor Missing2Dual Tire ImbalanceT1 Trailer AxleAxle Designation, Tire and Selected Tire LegendLeft Tire SelectedRight Outer Dual Selected
BW8002 Page 15 Pressure Deviation Value - The pressure deviation value indicates the amount of under or over inflation. When the indicator has a + 5, it means 5 PSI of air should be removed and when it’s - 5, it means 5 PSI of air should be added. Tire Air Temperature – This value indicates the current internal air temperature for the selected tire. Temperature may be shown in degrees F or C. Tire Air Pressure – This value indicates the current pressure value for the selected tire. This is the actual pressure value and is not temperature compensated. Units of Measure – Indicates the units the pressure value is displayed in. This may be set to PSI, BAR, or kPa. Operation SCREEN ICONS READY SCREEN ICONS Ready Screen IconsTPMS ReadyActive Alert PresentTrailer ConnectedActive Dual Tire Imbalance Present Wheel Icon – This icon appears on the TPMS Ready Screen and indicates the system is ready and active. Triangle – When shown on the TPMS Ready Screen, this icon indicates an active alert is present. Trailer – This icon indicates a Trailer-LinkTM TPMS system is wirelessly connected to the tractor ECU and indicates trailer data is available. Dual Tire – This icon appears on the TPMS ready screen and indicates an active dual tire imbalance is present. This icon is also shown on the individual axle screen and indicates the wheel end where the imbalance is present.
BW8002 Page 16 ALERT ICONS Alert IconsFirst Level Alert (FAL)Second Level Pressure Alert (SAL)High Temperature AlertSensor Low Battery Triangle –When displayed on the individual axle screen, this icon indicates a First Level Alert (FAL) is active. Tire with Exclamation Point - This icon is shown on the individual axle screen and indicates a Second Level Alert (SAL)/Critical Low Pressure Alert is active. Thermometer – This icon is shown on the individual axle screen and indicates a High Temperature Alert is active. Low Battery – This icon is shown on the individual axle screen and indicates a sensor with a low battery.
BW8002 Page 17 USING THE SMARTIRE TPMS SYSTEM NOTE: It is normal for the TPMS system to take up to 5 minutes for all tire sensor data to be received and displayed to the driver as the sensors transmit data every 3-5 minutes. In some instances the tire could be in a position where the sensor signal could be blocked and not seen by the receiver. In this case, after 35 minutes of not seeing a sensor, the system will issue a Sensor Fault Alert for that location. If a Sensor Fault Alert occurs and does not clear after the vehicle is driven, please report this condition to your maintenance personnel as it may indicate a problem with the system. GETTING STARTED When the vehicle’s ignition switch is turned on, the SmarTire™ system will power up and the display will indicate that the system is initializing. After a short period, the display will show the “TPMS Ready” screen indicating that the system is ready to receive tire data from the sensors. If an Alert icon (triangle with an exclamation mark) is displayed and the LED light is illuminated when the TPMS Ready screen is shown, this is an indication that an active alert has been detected and should be investigated / corrected before the vehicle is driven. Bendix recommends that tire pressure and temperature conditions always be corrected before a vehicle is driven to ensure the safety of the driver, vehicle and cargo.
BW8002 Page 18 HOW TO CHECK TIRE PRESSURE, TEMPERATURE AND PRESSURE DEVIATION You can navigate through the SmarTire display by following the steps below. 1. Starting from the TPMS Ready Screen, press the right button once and the display will show the first axle screen starting at the front of the vehicle with left tire position highlighted. The pressure, temperature and pressure deviation values are then displayed for the selected tire. 2. To move to the next wheel on the axle, press the right button once. Each time the right button is pushed, the next tire in sequence will be selected and its information displayed. Pressing the right button when the last tire on the axle is selected will re-select the first tire on that axle. 3. To move to the next axle on the vehicle, press the left button once. Once again, pressing the right button will scroll the display to the next tire on that axle. Each time the left button is pressed the display will show the next axle on the vehicle. When the left button is pressed from the last axle screen, the first axle will once again be shown. To exit back to the “TPMS Ready” screen, press the center button once. LED for Alerts ScreenRight ButtonCenter ButtonLeft Button
BW8002 Page 19 ALERTS & WARNINGS REACTING TO ALERTS & WARNINGS IMPORTANT: It is important to always react to the alerts and warnings provided by the SmarTire TPMS (Tire Pressure Monitoring System). It is recommended that tire conditions always be corrected as soon as possible and before the vehicle is driven. Once the pressure is restored or the temperature is reduced, the alert will automatically turn off. PRESSURE AND TEMPERATURE ALERTS FIRST ALERT LEVEL (FAL): PRESSURE DEVIATION ALERT Indicated By: Flashing LED Light, Alert Triangle, + or - Deviation Value. This alert is intended to give you an early indication that the tire is low/high. This alert is typically based on the temperature compensated value (if temperature compensation is selected for the alert). If so, you may see that the pressure is above the CIP, but due to the temperature of the tire, the pressure is actually low or high depending on the deviation value showed. The axle designator and the highlighted wheel position indicate the position of the tire that is under- or over-inflated. The pressure deviation value indicates the amount of under (-), or over (+) inflation that should be corrected. To acknowledge this alert and return to the TPMS ready screen, press any button. The LED will stop flashing but remain illuminated until the problem is corrected. To correct the problem, add or remove air to the affected tire as indicated by the deviation value. When the deviation value is 0 the tire is properly inflated.
BW8002 Page 20 SECOND ALERT LEVEL (SAL): CRITICAL LOW PRESSURE ALERT Indicated By: Flashing LED Light, Alert Tire Icon, Deviation Value. This alert is intended to give you an indication that the tire is critically low and needs immediate attention to prevent a critical failure. The axle designator and the highlighted wheel position indicates the tire that is under inflated. The pressure deviation value indicates the amount of under- or over-inflation. IMPORTANT: This alert indicates that the tire is critically underinflated and should be addressed immediately. To acknowledge this alert and return to the TPMS ready screen, press any button. The LED will stop flashing but remain illuminated until the problem is corrected. To correct the problem add air to the affected tire as indicated by the deviation value. When the deviation value is 0 the tire is properly inflated. HIGH TEMPERATURE ALERT Indicated by: Flashing LED Light, Alert Thermometer, Temperature Value. This alert is intended to give you an indication that the temperature of the air in the tire has reached a critical point and should be investigated. The axle designator and the highlighted wheel position indicates the tire that is critically hot. High tire temperatures are typically caused by under-inflation and the system will usually provide a pressure alert in advance of a temperature alert. If triggered on its own, this alert can be an indication of an alternative problem, such as a dragging brake or a bearing failure. To acknowledge this alert and return to the TPMS ready screen, press any button. The LED will stop flashing but remain illuminated until the problem is corrected. To correct the problem investigate what is causing the elevated temperature.
BW8002 Page 21 OTHER ALERTS AND WARNINGS SENSOR FAULT ALERT Indicated by: Flashing LED Light, Sensor Fault Alert Message A Sensor Fault Alert will be issued for any programmed sensor for which the Receiver/ECU has not received data for a predetermined time. Typically, this time is set to 35 minutes. Sensor Fault Alerts are self-clearing as soon as data is received from the given sensor. Prolonged Sensor Fault Alerts can be an indicator of damaged or missing sensors and should be addressed to ensure the system is functioning properly. Tires with active Sensor Faults cannot provide pressure and temperature alerts. Sensor Fault Alerts may also appear when the vehicle is stopped and idling for an extended period of time. Due to the nature of RF signals, the reception from a tire sensor may be blocked when the vehicle is stationary. If the fault occurs and does not clear after the vehicle is driven, please report this condition to maintenance personnel as it may indicate there is a damaged or missing sensor. LOW SENSOR BATTERY ALERT Indicated by: Flashing LED Light, Battery Alert Icon Typically, a low sensor battery alert will be triggered when the battery reaches 2.1 Volts and below. This alert indicates that the sensor should be replaced as soon as possible before the battery dies and the sensor stops transmitting. If not replaced, once a sensor stops transmitting, after 35 minutes a Sensor Fault will be activated for that tire location and prevent pressure and temperature alerts from being issued for the tire location. 2SENSORFAULT2+-X.XXVolts
BW8002 Page 22 NO TIRES PROGRAMMED ALERT Indicated by: Flashing LED Light, No Tires Programed Alert Message This message will be displayed after the startup sequence if the Receiver/ECU has not been programmed with any axle and wheel configurations. In this case the system is not functioning and no pressure or temperature alerts will be displayed. This should be reported to maintenance to be corrected as soon as possible. NO TIRESPROGRAMMED
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BW8002 Page 24 QUICK SMARTIRE SYSTEM TROUBLESHOOTING TROUBLESHOOTING TABLE Note: If problem continues report to maintenance. ORDER OF TROUBLESHOOTING ProblemXX X X X X XSeveral tires are reporting sensor Diagnostic Trouble CodesActions to be takenTurn ignition off & onWait 5 minutes after key on for data to be received XGauge is not initializingDashes displayed on gaugeGauge shows a Pressure or Temperature AlertTire pressure is not being updated after pressure correction (greater than 3PSI)Tire pressure value is decreasing over timeGauge shows Sensor Fault AlertXXSignal may not be received, move the vehicle to reposition the sensorXXXXXGo to the section “Pressure and Temperature Alerts & Warnings”.(Page 7) and follow the indications for the specific alert.XThe tire is exhibiting a slow leak. Take appropriate steps to have the tire inspected for any damage or leaks.XReport to maintenanceFollow the indications on Sensor Fault Troubleshooting (Page 12)X
BW8002 Page 25 SENSOR FAULT TROUBLESHOOTING FLOW CHART Is the Sensor Fault intermittent or constant? For example, does the fault go away after driving or always stay on?Have the tires been serviced prior to the sensor fault becoming active?Wait 3-5 minutes after key on for data to be received. Issue resolved?Move the vehicle to reposition the sensor and wait 3-5 min for next transmission. Issue resolved?Is the gauge displaying a Sensor Fault?YESNOCONSTANTIf this happens frequently, this may indicate a system issue, Report to Maintenance.Has the vehicle been idling for more than 35 minutes with the ignition power “ON”? INTERMITTENTDoes the fault clear away after driving again?YESNOSensor Fault ClearedYESYESDriver Sensor Fault TroubleshootingYESThis is an indication that either a sensor was not replaced during servicing or the new ID code was not programmed. Report to Maintenance.YESThis is an indication of missing sensor, mis-programmed sensor ID code, or reception issue. Report to Maintenance.NONO Report to Maintenance.NO
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BW8002 Page 27 This device complies with Industry Canada’s license-exempt RSSs. Operation is subject `to the following two conditions: (1) This device may not cause interference; and (2) This device must accept any interference, including interference that may cause undesired operation of the device. Cet appareil est conforme aux RSS exempts de licence d'Industrie Canada. L'opération est soumise aux deux conditions suivantes: (1) Cet appareil ne doit pas causer d'interférences; et (2) Cet appareil doit accepter toute interférence, y compris les interférences susceptibles de provoquer un fonctionnement indésirable de l'appareil.
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