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Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • When replacing the tire pressure warning ECU and receiver, read the IDs stored in the old ECU using the intelligent tester and write them down before removal.
  • It is necessary to perform initialization (see INITIALIZATION ) after registration (see REGISTRATION ) of the transmitter IDs into the tire pressure warning ECU and receiver after the ECU and/or valve and transmitter has been replaced.
  1. CHECK FREQUENCY RECEIVING CONDITION 
    1. Check if the vehicle is located in areas such as the ones described below:
      1. Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.

        HINT:

        If the vehicle is located in areas described above, the tire pressure warning light may come on only in a particular area.

      2. Devices using similar radio frequencies are used in the vehicle.

        OK: Facilities, or devices that use similar radio frequencies are not located in the vicinity of the vehicle. 

        HINT:

        Radio frequency may be interrupted due to surroundings or devices installed by the user.

        NG: CHECK IF ANY DEVICE IS INSTALLED BY USER 

        OK: GO TO next step. 

  2. CHECK TIRE PRESSURE WARNING SELECT SWITCH 
    1. Check the position of the tire pressure warning select switch (MAIN or 2nd).

      OK: Tire pressure warning select switch position is the same as the type of registration ID of the wheels being used. 

      NG: CHANGE TIRE PRESSURE WARNING SELECT SWITCH POSITION 

      OK: GO TO next step. 

  3. PERFORM INITIALIZATION 
    1. Perform initialization (see INITIALIZATION ).
  4. READ VALUE OF DATA LIST (TIRE INFLATION PRESSURE) 
    1. Turn the ignition switch OFF.
    2. Connect the intelligent tester to the DLC3.
    3. Turn the ignition switch ON and the tester ON.
    4. Following the display on the intelligent tester, select the "DATA LIST".
    5. Check the values by referring to the table below.

    Tire pressure warning ECU and receiver 

    TIRE PRESSURE SPECIFICATIONS

    Tester Display Measurement Item/Range Normal Condition Diagnostic Note
    TIREPRESS1 ID1 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm2 , 0 psi), Relative pressure / -100 kPa (-1 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 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.*
    TIREPRESS2 ID2 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm2 , 0 psi), Relative pressure / -100 kPa (-1 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 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.*
    TIREPRESS3 ID3 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm2 , 0 psi), Relative pressure / -100 kPa (-1 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 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.*
    TIREPRESS4 ID4 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm2 , 0 psi), Relative pressure / -100 kPa (-1 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 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.*
    TIREPRESS5 ID5 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm2 , 0 psi), Relative pressure / -100 kPa (-1 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 kgf/cm2 , -14 psi) is displayed for relative pressure, data has not been received.*
    HINT:
    *: It may take about 2 or 3 minutes until the values are displayed.

    Result 

    RESULT REFERENCE CHART

    Condition Proceed to
    All tire pressure readings are equal to specified values. A
    Tire pressure values are not displayed. B

    A: END 

    B: GO TO  C2121/21 TO C2125/25  

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