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TIRE PRESSURE WARNING SYSTEM INITIALIZATION

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Note:

  • Initialization can be confirmed through the tire pressure warning light.

  • The order in which the data is received is random.

  • If the signals from all the wheels are received, initialization is completed.

  • Initialization is completed when the Data List "ID Tire Inflation Pressure" display shows the correct pressures.

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  • Initialization is normally completed within a few minutes.

  • It may take up to a few minutes until the values are displayed. If the values are not displayed after a few minutes, perform troubleshooting according to the inspection procedure for DTCs C2121/21 to C2125/25.

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  • If initialization has not been completed successfully, DTC C2177/77 is stored after a vehicle speed of 40 km/h (25 mph) or more continues for 20 minutes or more.

  • During test mode (sensor check mode), the system will not change to initialization mode even if the tire pressure warning reset switch is pushed.

  • While the answer-back function for the ID switching function is operating, the system will not change to initialization mode even if the initialization procedure is performed.

  • B0025MLC05
    *a Front view of DLC3

    Initialization can be terminated by connecting terminals 13 (TC) and 4 (CG) of the DLC3.


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  1. BEFORE INITIALIZATION


    1. Set the tire pressure to the specified value.

      Tip:

      Refer to the link as the procedure for adjusting the tire pressures differs depending on the temperature of the tires.

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  2. Tip:

    The tire pressure warning system illuminates the tire pressure warning light to warn the driver when any of the following conditions are met:


    • Due to the operation of the tire pressure warning reset switch, the tire pressure drops to approximately 80% or less of the tire pressure set during system initialization.

    • The tire pressure drastically decreases (approximately 20 kPa (0.2 kgf/cm2, 2.9 psi) or more within several minutes) to approximately 80% or less of the tire pressure* when the tires are warmed.

      *: If initialization is performed and the vehicle is driven for a certain period of time, the tire pressure set during system initialization is adjusted and set to the tire pressure when the tires are warmed from the driving conditions.

      Note:

      If the tire pressure is decreased approximately 20 kPa (0.2 kgf/cm2, 2.9 psi) or more in order to adjust the tire pressure, even if the adjusted tire pressure is 80% or more than the tire pressure set during system initialization, the tire pressure warning light may illuminate if the tire pressure drops below 80% of the tire pressure set when the tires are warmed. In this case, perform initialization again.

    INITIALIZATION PROCEDURE


    1. Turn the ignition switch to ON.

    2. B0024MDC01
      *1 Tire Pressure Warning Light
      *2 Tire Pressure Warning Reset Switch
      *a Tire Pressure Warning Light Output Pattern
      *b 1 sec.
      *c ON
      *d OFF

      Press and hold the tire pressure warning reset switch for 3 seconds or more so that the tire pressure warning light blinks 3 times.

    3. Turn the ignition switch off.

    4. Connect the GTS to the DLC3.

    5. Turn the ignition switch to ON and turn the GTS on.

    6. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.


      1. Chassis > Tire Pressure Monitor > Data List
        Tester Display
        ID 1 Tire Inflation Pressure
        ID 2 Tire Inflation Pressure
        ID 3 Tire Inflation Pressure
        ID 4 Tire Inflation Pressure
        ID 5 Tire Inflation Pressure








    7. Check that initialization has been completed.

    8. Confirm that the tire pressure data of all tires is displayed on the GTS screen.