SmartTire RV Troubleshooting Guide
Contents
1. SMARITIRE Recreational Vehicle Troubleshooting Guide smarifiree RV Troubleshooting Guide SmarTire does not power up when key is turned On for the first time 1 1A System is not receiving power Confirm that the 12 or 24 volt DC power source is present in the receiver s power cable and the polarity of power connection to cable is correct If power is present and the polarity is correct replace the power cable 1 2Q SmarTire resets itself at irregular intervals while vehicle is being driven powers off and on 1 2 A Receiver power cable has a loose connection Check the connections at both ends of the receiver power cable and tighten If condition persists replace the receiver power cable sMARIliRE 1 3 A RV Troubleshooting Guide No signals are received from the sensors directly after the installation is complete Confirm that the antenna cables are connected to the receiver If the cables are connected then the receiver has not been programmed with the ID numbers of the sensors installed on the vehicle All receivers come factory programmed with the ID numbers for the sensors included in the kit For this situation to occur it is most likely caused by the wrong receiver being installed on the vehicle when more than one SmarTire system is being installed on different vehicles at the same time If this is the case switch to the other receiver or reprogram the receiver with the ID numb2. additive liquids If the condition persists replace the affected sensor 1 13 Q High Temperature alert is activated at one or more sensor locations without a low pressure alert or warning 1 13 A Tire is irregularly hot Radial ply tires normally operate well below the activation threshold of the high temperature alert Therefore if the high temperature alert is activated without an earlier under inflation alert the cause of the problem is most likely radiated heat generated by a dragging or over worked brake drum Investigate possible causes and correct the condition 9 14 sMARINRE
3. display shows approximately the same values as the hand held gauge stop the vehicle at your installation facility and without powering down the SmarTire system deflate one tire by approximately 5 10 PSI Note Once the vehicle has stopped moving the sensors will stay active for 15 minutes before going into a sleep mode You now have 15 minutes to diagnose the problem or the vehicle will need to be driven over 15 mph 24 kph again Confirm that the display shows the reduced pressure at the corresponding wheel position If it does not the sensor installed in the deflated tire is not programmed to the correct wheel position in the receiver If it does that wheel position has been correctly programmed Repeat for all other tires on the vehicle to determine whic Y sensor ID numbers need to be reprogrammed smARIfiRE RV Troubleshooting Guide 1 9 B Inaccurate Gauge Most hand held gauges have an accuracy rating of plus or minus 5 PSI The SmarTire system is far more accurate measuring pressure to an accuracy of plus or minus 1 PSI As a result the temperature compensated pressure deviation values provided by the SmarTire should be used over the non temperature compensated values provided by the hand held gauge Inflate or deflate the tires until the pressure deviation value for all tires is 0 PSI plus or minus 1 PSI The tires will now be properly inflated Please note that since SmarTire sensors measure tire pressu
4. dition persists change the power cable connection to a different more consistent source of power smarifire RV Troubleshooting Guide Pressure deviation alert activates on one or more tires at start up when the initial transmissions are received One or more tires are not properly inflated or the cold inflation pressure CIP setting in the receiver is different than the recommended CIP for the vehicle It is possible that the affected tire has a puncture and is losing pressure Confirm that the affected tires are inflated to the recommended amount as indicated on the vehicle s Placard If not inflate or deflate the affected tires as required and investigate the cause of the pressure condition was the tire improperly inflated after installation If the affected tires are properly inflated confirm that the CIP setting in the receiver matches the recommended CIP values for the vehicle See FFD manual or DPT manual for programming instructions Please note that the receiver s software assumes that tires are inflated to the programmed CIP value at an ambient temperature of 65 18 If the actual tire temperatures are higher than 65f initial inflation pressures should be respect ively higher 6 smARIliRE 1 8A RV Troubleshooting Guide Pressure deviation alert activated on one or more tire locations after a period of driving Confirm that the affected tires are properly inflated If not inflate or def
5. ers of the sensors installed on the vehicle see User Manual or Training Section 7 Programming using a DPT sMARIliRE 1 4A 1 5 Q 1 5 A RV Troubleshooting Guide Transmissions are not being received at a tire location after a sensor was replaced or a spare tire was installed The ID number for the sensor at that location is not programmed into the receiver Program the ID number of the new sensor into its respective location in the receiver using the Dealer Programming Tool DPT as outlined in the DPT User Manual If the sensor in a tire does not respond during programming dismount the tire from the wheel to confirm that the sensor was installed If the sensor is present but not functioning replace it The display does not allow access to any programming modes For Displays of part number 200 0169 the setup button is disabled which will not allow any access to programming Displays of part number 200 0168 and 200 0133 allow access to programming via the setup button by pressing and holding the button for more than 2 seconds Should this not be the case the button is malfunctioning Replace the display j SMARIRE 1 6 A RV Troubleshooting Guide Display sometimes powers up improperly and displays E 4 error A voltage drop during the engine starting sequence caused the receiver to not power up properly Turn off the ignition and power up the receiver again to clear the problem If the con
6. late the affected tires by the amount indicted in the alert and investigate the cause of the pressure condition Keep in mind that the inflation pressure of a tire hotter than 65f 18 should be higher than the recommended CIP If the affected tires are properly inflated confirm that the CIP setting in the receiver matches the recommended CIP values for the vehicle See FFD manual or DPT manual for programming instructions If the programmed CIP setting matches the vehicle s recommended CIP values the receiver s Slope setting may not be correct See FFD manual or DPT manual for Slope programming instructions sMARIliRE RV Troubleshooting Guide Tire pressure reading on the display does not match the pressure value obtained from a hand held gauge for one or more tire locations 1 9 A This condition can be the result of an inaccurate hand held pressure gauge altitude or because the wheel positions in the display do not correspond to the tires the sensors are installed in To diagnose the problem 1 Adjust the inflation pressures of all tires to their recommended CIP value using the hand held gauge 2 Drive the vehicle over 15 mph 24 kph to activate the sensors If the SmarTire indicates that all tires are inaccurately inflated by approximately the same amount the problem is being caused by an inaccurate gauge or the pressure differential caused by altitude P SMARIliRE 3 RV Troubleshooting Guide If the
7. nsmission the receiver initiates an E 1 error To clear the error wake up the sensors by traveling faster than 15 mph or power off the system and then power it back on Note Sensors manufactured after December 15 2005 will not have this issue sMARIliRE RV Troubleshooting Guide The Receiver Display initiates an E 1 error at one or more wheel positions after a period of driving at interstate highway speeds 1 11 A Higher vehicle speeds can reduce the receiver s ability to capture data from the sensors Check antenna rods and clean away any excessive dirt buildup Straighten antennas if they are bent If the condition persists and the system has been in use for over 5 years under normal driving conditions the battery in the sensor installed at the affected wheel position may be discharged Replace the sensor sMARIliRE RV Troubleshooting Guide One or more wheel positions on the display are slow in being received or display dashes after starting a trip 1 12 A Transmissions are not being consistently received from one or more wheel positions Sensors are designed to transmit within 15 seconds of the vehicle moving 15 mph To improve signal reception check the antennas to confirm absence of dirt or damage and adjust their position so that they have a clear line of sight to the tires Sensor signal strength may also be adversely affected by tire additive liquids or low sensor battery voltage Remove tire
8. re from the inside of the tire they are not influenced by changes in atmospheric pressure due to elevation If tire pressure levels are set with a handheld gauge in a high altitude region the SmarTire system will display somewhat lower pressure values than the reading provided by the handheld gauge For example a tire inflated to its correct CIP in Denver CO approx 5280 ft above sea level as measured using an accurate hand held gauge will show 2 5 PSI on the SmarTire display as a result of the elevation 10 smARIfiRE RV Troubleshooting Guide 1 9 C Sensor ID Programming Reprogram the receiver by performing a tire rotation function using the FFD see FFD Owner s Manual or by using the DPT to reprogram the sensor ID numbers into the correct wheel positions see DPT Manual Note Do not forget to re inflate the tires to their proper CIP values n smARIliRE 1 10 A RV Troubleshooting Guide Receiver Display initiates an E 1 error after about 45 minutes of being parked with the vehicle s engine running The E 1 error activates if the receiver does not receive transmissions from the sensors after approximately 20 minutes When a vehicle is parked but left running or driven at very low speeds traffic jam the sensors may go into a power save mode after approximately 15 minutes In power save mode sensors will either stop transmitting or transmit once every hour After 20 minutes without receiving a tra
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