TIRE PRESSURE WARNING SYSTEM INITIALIZATION

Note


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

  • If the ignition switch is turned off during initialization, the tire pressure warning ECU and receiver memorizes that initialization was being performed. Therefore, it is not necessary to perform the initialization procedure again after turning the ignition switch to ON.

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

  • If the signals from all the tire pressure warning valve and transmitters are received, initialization is completed.

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

    Click here

  • Initialization is normally completed within a few minutes.

    However, it may take 10 minutes or more until the tire pressure of the tire inflation pressure display function is shown (w/ Tire Inflation Pressure Display Function).

  • It may take 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 C2124/24 (C2125/25: w/ Full Size Spare Tire).

    Click here

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

  • During test mode (sensor check mode), the system will not change to initialization mode even if the initialization procedure is performed.

  • If initialization is performed, the existing tire positions will be cleared, but will be automatically identified when the vehicle is driven at 40 km/h (25 mph) or more for 10 to 30 minutes (w/ Tire Inflation Pressure Display Function).

  • If the Data List is displayed for 10 minutes or more using the GTS during initialization, initialization will not complete and the tire pressure warning ECU and receiver will store DTC C2177/77.

  • w/ ID Switching Function:

    Initialization cannot be started while the tire pressure warning light is blinking after ID switching is performed.

  • B0071VTC07
    *a Front view of DLC3

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


  1. BEFORE INITIALIZATION


    1. Set the tire pressure to the specified value.

      Note

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

      Click here

  2. INITIALIZATION PROCEDURE

    Tech Tips

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


    • The tire pressure drops to approximately 80% or less of the tire pressure set when system initialization was performed using the steering pad switch assembly.

    • 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.


    1. Turn the ignition switch to ON.

    2. B006XZ2C01
      *1 Tire Pressure Warning Light
      *2 "OK" Switch (Steering Pad Switch Assembly)
      *a Tire Pressure Warning Light Output Pattern
      *b 1 sec.
      *c ON
      *d OFF

      Select "Set Pressure" on the multi-information display and press and hold the "OK" switch (steering pad switch assembly) until 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.

    6. Turn the GTS on.

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


      Chassis > Tire Pressure Monitor > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      ID 1 Tire Inflation Pressure ID1 tire inflation pressure

      min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)

      Actual tire inflation pressure If N/A is displayed, data has not been received.*1
      ID 2 Tire Inflation Pressure ID2 tire inflation pressure

      min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)

      Actual tire inflation pressure If N/A is displayed, data has not been received.*1
      ID 3 Tire Inflation Pressure ID3 tire inflation pressure

      min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)

      Actual tire inflation pressure If N/A is displayed, data has not been received.*1
      ID 4 Tire Inflation Pressure ID4 tire inflation pressure

      min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)

      Actual tire inflation pressure If N/A is displayed, data has not been received.*1
      ID 5 Tire Inflation Pressure ID5 tire inflation pressure

      min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm2, 55 psi)

      Actual tire inflation pressure
      • If N/A is displayed, data has not been received.*1

      • *2

      Tech Tips


      • *1: It may take a few minutes until the values are displayed.

      • *2: w/ Full Size Spare Tire

      • The wheel position cannot be determined from ID1 through ID5 on the Data List.

    8. Check that initialization has been completed.

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