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Tire Pressure Warning System: Initialization

  1. DESCRIPTION OF INITIALIZATION 
    1. Perform initialization in the following cases:
      • Before delivery of a new vehicle.
      • After replacement of the tire pressure warning ECU*.
      • After replacement of a tire pressure warning valve and transmitter*.
      • Specified tire pressure changes depending on the size or type of the tire.

      HINT:

      *: Perform initialization after the transmitter ID registration is completed (See REGISTRATION ).

    2. Before initialization
      1. Set the all tire pressures to the specified value (See TIRE PRESSURE WARNING SYSTEM ).
        NOTE: Make sure the tires are cooled down.
  2. INITIALIZATION PROCEDURE 
    1. Turn the ignition switch on (IG).
    2. Press and hold the tire pressure warning reset switch for 3 seconds or more so that the tire pressure warning light blinks 3 times.
      Fig 1: Tire Pressure Warning Light Blinking Pattern
      G06120460Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Turn the ignition switch off.
    4. Connect Techstream to the DLC3.
    5. Enter the following menus: Chassis/Tire Pressure Monitor/Data List.
    6. Check that the initialization has been completed.
    7. Confirm that the tire pressure data of all tires are displayed on the tester screen.
      NOTE:
      • The initialization is normally completed within 2 to 3 minutes.
      • If the initialization has not been completed successfully, DTC C2177/77 will be set after the vehicle is driven for 20 minutes or more.
      • The initialization can be terminated by connecting terminals TC and CG of the DLC3.

    Tire Pressure Monitor 

    TESTER DISPLAY REFERENCE

    Tester Display Measurement Item/Range Normal Condition Diagnostic Note
    ID1 Tire Inflation Pressure ID1 tire inflation pressure/
    min.: Absolute pressure/0 kPa (0 kgf/cm2 , 0 psi), Relative pressure/-100 kPa (-1.0kgf/cm2 , -14 psi)
    max.: Absolute pressure/637.5 kPa (6.5 kgf/cm2 , 92.5 psi), Relative pressure/537.5 kPa (5.4 kgf/cm2 , 78 psi)    		 Actual tire inflation pressure If 0 kPa (0 kgf/cm2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.(1)
    ID2 Tire Inflation Pressure ID2 tire inflation pressure /
    min.: Absolute pressure/0 kPa (0 kgf/cm2 , 0 psi), Relative pressure/-100 kPa (-1.0 kgf/cm2 ,-14 psi)
    max.: Absolute pressure/637.5 kPa (6.5 kgf/cm2 , 92.5 psi), Relative pressure/537.5 kPa (5.4 kgf/cm2 , 78 psi)    		 Actual tire inflation pressure If 0 kPa (0 kgf/cm2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.(1)
    ID3 Tire Inflation Pressure ID3 tire inflation pressure /
    min.: Absolute pressure/0 kPa (0 kgf/cm2 , 0 psi), Relative pressure/-100 kPa (-1.0kgf/cm2 ,-14psi)
    max.: Absolute pressure/637.5 kPa (6.5 kgf/cm2 , 92.5 psi), Relative pressure/537.5 kPa (5.4 kgf/cm2 , 78 psi)    		 Actual tire inflation pressure If 0 kPa (0 kgf/cm2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received(1)
    ID4 Tire Inflation Pressure ID4 tire inflation pressure /
    min.: Absolute pressure/0 kPa (0 kgf/cm2 , 0 psi), Relative pressure /-100 kPa (-1.0 kgf/cm2 ,-14 psi)
    max.: Absolute pressure/637.5 kPa (6.5 kgf/cm2 , 92.5 psi), Relative pressure/537.5 kPa (5.4 kgf/cm2 , 78 psi)    		 Actual tire inflation pressure If 0 kPa (0 kgf/cm2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.(1)
    ID5 Tire Inflation Pressure ID5 tire inflation pressure /
    min.: Absolute pressure/0 kPa (0 kgf/cm2 , 0 psi), Relative pressure/-100 kPa (-1.0 kgf/cm2 ,-14 psi)
    max.: Absolute pressure/637.5 kPa (6.5 kgf/cm2 , 92.5 psi), Relative pressure/537.5 kPa (5.4 kgf/cm2 , 78 psi)    		 Actual tire inflation pressure If 0 kPa (0 kgf/cm2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.(1)
    HINT:
    • The initialization is complete when the DATA LIST "ID Tire Inflation Pressure" display shows the correct pressures.
    • (1) It may take about 2 or 3 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 (See DTC C2121/21 NO SIGNAL FROM TRANSMITTER ID1 ).
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