In-Depth Tyre Deflation Warning System Information

Discussion in 'Technical Articles' started by Ichiban, Saturday 14th Jul, 2012.

  1. Ichiban Founder Staff Team

    England CJ Leeds
    30,129
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    Model Model Code Year Model
    Civic 3 Door FN1, FN2, FN3, FN4 2009,2010,2011
    Civic 5 Door FK1, FK2, FK3 2009, 2010, 2011, 2012
    CR-V RE5 2010, 2011, 2012
    CR-V I-DTEC RE62010, 2011, 2012

    The Background
    A tyre deflation warning system was introduced on the 2009 Year Model Civic 3dr and 5dr and 2010 Year Model CR-V models, and isnow carried on to the new 2012 Civic range. This article is designed to give you some more information regarding the functionality and operation of this system.

    How does it work?

    This system utilises the existing VSA wheel speed sensors to calculate individual wheel speeds as any large change in tyre pressure will affect these readings due to the change in the wheels rolling radius. If a loss of pressure is detected then the dashboard warning lamp will be illuminated (see below) along with the same display being shown on the multi information display panel as well.

    Tyre Deflation Warning System1.

    Initialisation information for 2009-2011 Civic and CR-V


    1) Switch the ignition to ON (II). Note that the vehicle must be stationary and the gear lever in the neutral position for manual transmission models or in P or N for automatic tranmsission models and the handbrake is applied.

    2) Press and hold the "Info" button (A) for more than 3 seconds to enter the customisation mode.

    3) Press the "Info" button repeatedly until symbol (B) is displayed, then press the "Sel/reset" button (C).

    4) Select "OK" by pressing the "Info" button, then press the "Sel/reset" button to set the system. The system will then display "Complete" in the multi information display to show that the initialisation has been successful. If the display shows "Failed" then try the reset again from step 1.

    If this fails again then please refer to the "Symptom troubleshooting index" in the shop manual. (This can be found with me just ask me)

    5) Road test the vehicle for at least 10 minutes at speeds above 16mph to allow the system to "learn" the correct
    wheel speeds for tyres set to the correct pressure.


    Initialisation information for 2012 onwards Civic



    Tyre Deflation Warning System2.




    Road test the vehicle for at least 10 minutes at speeds above 16mph to allow the system to "learn" the correct wheel speeds for tyres set to the correct pressure.


    Common issues


    1) For any cases you may see with this warning light repeatedly illuminating please check the tyres as a first step.
    Check the pressures are correct and that the tyres are the exact size, load and speed rating specified for the vehicle as per the tyre pressure label on the vehicle. Even a change in one tyres load or speed rating is enough to give a different wheel speed signal and cause the warning light to illuminate.


    2) Check that all of the tyre tread depths are roughly equal across each axle. For example having 1 front tyre at 3mm and one front tyre at 6 or 7 mm will again cause enough of a difference in wheel speeds to cause the light to illuminate.

    3) Once this has been checked, and if necessary rectified, carry out the initialisation process as above paying attention to the speed and time required for the system to learn the different tyre variances which reduce the chances of poor detection.
     
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  2. Ichiban Founder Staff Team

    England CJ Leeds
    30,129
    6,381
    516
    This system is poor in my opinion it has so many red herring its undeliverable, Honda Japan has not pushed for such devices as they are not conceived of it 100% of its viability. They have however allowed HUK to apply this as it feature seen on a lot of European cars and they need to been seen doing something to appease the European gadget crazy market.

    if you seen anyone struggling with this you have the information to assist.
     
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    Primarycare and Nikonandmac like this.
  3. Paul Expert Advisor ★ ★ ★ ★ ★

    My wife had it on her Mini due to it having runflats and it came on once just after she'd gone over a nail and had a puncture. She didn't even realise so it did work for her. The system will only detect rapid deflation however, so a very small leak of 1-2 psi a week will go unnoticed.