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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Suspension >> Wheels & Tire System >> Tire Pressure Warning System - Diagnostic Codes, Symptom Tests & Circuit Tests >> Tire Pressure Warning System >> Tire Position Not Identified [11/2023 - ] >> Procedure

Tire Position Not Identified [11/2023 - ]: Procedure

  1. IDENTIFY TIRE POSITION FOR EACH TIRE PRESSURE WARNING VALVE AND TRANSMITTER 
    1. Set the tire pressure to the specified value.

      Refer to INSPECTION [12/2019 - ]

    2. Display the "ID Tire Inflation Pressure" value for each wheel using the GTS.

      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/cm 2 , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm 2 , 0 psi)
      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm 2 , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm 2 , 55 psi)      		 Actual tire inflation pressure Not displayed, if data has not been received.*
      ID 2 Tire Inflation Pressure ID2 tire inflation pressure min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm 2 , 0 psi)
      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm 2 , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm 2 , 55 psi)      		 Actual tire inflation pressure Not displayed, if data has not been received.*
      ID 3 Tire Inflation Pressure ID3 tire inflation pressure min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm 2 , 0 psi)
      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm 2 , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm 2 , 55 psi)      		 Actual tire inflation pressure Not displayed, if data has not been received.*
      ID 4 Tire Inflation Pressure ID4 tire inflation pressure min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm 2 , 0 psi)
      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm 2 , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm 2 , 55 psi)      		 Actual tire inflation pressure Not displayed, if data has not been received.*
      ID 5 Tire Inflation Pressure ID5 tire inflation pressure min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm 2 , 0 psi)
      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm 2 , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm 2 , 55 psi)      		 Actual tire inflation pressure
      • Not displayed, if data has not been received.*
      • w/ Full Size Spare Tire

      HINT: 

      • *: It may take a few minutes until the values are displayed.
      • The wheel position cannot be determined from ID1 through ID5 on the Data List.

      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
    3. Rapidly reduce the tire pressure for each wheel at least 40 kPa (0.4 kgf/cm 2 , 5.8 psi) within 30 seconds.
      NOTE:
      • It may take a few minutes until the values are displayed.
      • When an "ID Tire Inflation Pressure" value has not changed, reset the tire pressure to the appropriate specified value and rotate the tire 90 to 270 degrees. Then rapidly release the tire pressure and recheck the value.
    4. Read the "ID Tire Inflation Pressure" value and identify the tire with reduced pressure, and record the corresponding tire pressure warning valve and transmitter (ID1 to ID5).
    5. Repeat for each tire.
    6. Set the tire pressure to the specified value.

      Refer to INSPECTION [12/2019 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. PERFORM INITIALIZATION 
    1. Leave the vehicle with the ignition switch turned off for 15 minutes or more.

      HINT: 

      After the vehicle has been stopped for 15 minutes or more, the tire pressure warning valve and transmitter will transmit radio wave signals more frequently for the first several minutes of driving (4 times more frequent than usual).

    2. Perform initialization to clear the existing tire position information.

      Refer to INITIALIZATION [11/2023 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. IDENTIFY TIRE POSITION DURING DRIVING 
    1. Drive the vehicle at 40 km/h (25 mph) or more for 10 to 30 minutes in 1 trip.

      HINT: 

      Do not drive the vehicle in reverse gear while performing Tire Position Identification. If the vehicle is driven in reverse gear while performing Tire Position Identification, identification information will be discarded and Tire Position Identification may take longer than usual.

    2. Without turning off the ignition switch, check the tire position for each transmitter.

      Chassis > Tire Pressure Monitor > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      ID 1 Tire Position ID1 Tire Position No Information or FL or FR or RL or RR or Spare or Judging ID1 tire position is displayed If no tire position information is stored, "No Information" will be displayed.
      ID 2 Tire Position ID2 Tire Position No Information or FL or FR or RL or RR or Spare or Judging ID2 tire position is displayed If no tire position information is stored, "No Information" will be displayed.
      ID 3 Tire Position ID3 Tire Position No Information or FL or FR or RL or RR or Spare or Judging ID3 tire position is displayed If no tire position information is stored, "No Information" will be displayed.
      ID 4 Tire Position ID4 Tire Position No Information or FL or FR or RL or RR or Spare or Judging ID4 tire position is displayed If no tire position information is stored, "No Information" will be displayed.
      ID 5 Tire Position ID5 Tire Position No Information or FL or FR or RL or RR or Spare or Judging ID5 tire position is displayed
      • If no tire position information is stored, "No Information" will be displayed.
      • w/ Full Size Spare Tire

      Chassis > Tire Pressure Monitor > Data List 

      Tester Display
      ID 1 Tire Position
      ID 2 Tire Position
      ID 3 Tire Position
      ID 4 Tire Position
      ID 5 Tire Position

      Result

      Result Proceed to
      A transmitter with its tire position as "Judging" exists. A
      No transmitter with its tire position as "Judging" exists, and no tire pressures are displayed on the multi-information display. B
      No transmitter with its tire position as "Judging" exists, and tire pressures are displayed on the multi-information display. C

    Result: 

    B 

    GO TO TIRE PRESSURE WARNING LIGHT CIRCUIT INSPECTION PROCEDURE 

    Refer to Tire Pressure Warning Light Circuit [11/2023 - ] 

    HINT: 

    Perform "Tire Pressure Warning Light Circuit" inspection to check the communication status between the combination meter assembly and tire pressure warning ECU and receiver.

    Result: 

    C 

    END 

    Result: 

    A 

    See step  4

  4. CHECK TIRE PRESSURE WARNING VALVE AND TRANSMITTER 
    1. Without turning off the ignition switch, check each transmitter with its tire position displayed as "Judging".
    2. According to the display on the GTS, display the "ID Tire Inflation Pressure" item of the 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/cm 2 , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm 2 , 0 psi)
      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm 2 , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm 2 , 55 psi)      		 Actual tire inflation pressure Not displayed, if data has not been received.*
      ID 2 Tire Inflation Pressure ID2 tire inflation pressure min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm 2 , 0 psi)
      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm 2 , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm 2 , 55 psi)      		 Actual tire inflation pressure Not displayed, if data has not been received.*
      ID 3 Tire Inflation Pressure ID3 tire inflation pressure min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm 2 , 0 psi)
      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm 2 , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm 2 , 55 psi)      		 Actual tire inflation pressure Not displayed, if data has not been received.*
      ID 4 Tire Inflation Pressure ID4 tire inflation pressure min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm 2 , 0 psi)
      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm 2 , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm 2 , 55 psi)      		 Actual tire inflation pressure Not displayed, if data has not been received.*
      ID 5 Tire Inflation Pressure ID5 tire inflation pressure min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm 2 , 0 psi)
      max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm 2 , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm 2 , 55 psi)      		 Actual tire inflation pressure
      • Not displayed, if data has not been received.*
      • w/ Full Size Spare Tire

      HINT: 

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

      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

      Result

      Result Proceed to
      Displayed A
      Not displayed B

    Result: 

    B 

    REPLACE CORRESPONDING TIRE PRESSURE WARNING VALVE AND TRANSMITTER 

    Refer to REMOVAL [11/2023 - ]

    Result: 

    A 

    See step  5

  5. CHECK FREQUENCY RECEIVING CONDITION 
    1. Check that the following conditions are not met:
      1. Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.
      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 wave transmissions may be interrupted due to the surroundings or devices installed by the user.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    IDENTIFY TIRE POSITION DURING DRIVING AGAIN 

    Result: 

    NG 

    CHECK IF ANY DEVICE IS INSTALLED BY USER 

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