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Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 127 (Tire Pressure Warning System - Diagnostic Codes & Symptom Tests (Hybrid)) >> TIRE PRESSURE WARNING SYSTEM (for HV Model) >> DTC C2126: Transmitter ID not Received (Main) [08/2019 -] >> Procedure

DTC C2126: Transmitter ID not Received (Main) [08/2019 -]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. IDENTIFY TRANSMITTER NOT RECEIVED 
    1. Set the tire pressure to the specified value.

      Refer to INSPECTION [04/2018 - 08/2020] , or refer to INSPECTION [08/2020 -]

    2. Turn the power switch off.
    3. Connect the Techstream to the DLC3.
    4. Turn the power switch on (IG).
    5. Turn the Techstream on.
    6. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
    7. Display the "ID Tire Inflation Pressure" value for each wheel using the Techstream.

      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

      HINT: 

      • *1: It may take a few minutes until the values are displayed.
      • The wheel position cannot be determined from ID1 through ID4 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
    8. Rapidly reduce the tire pressure for each wheel at least 40 kPa (0.4 kg/cm2 , 5.8 psi) within 30 seconds. If the "ID Tire Inflation Pressure" value displayed on the Techstream does not change, the tire pressure warning valve and transmitter corresponding to the unchanged "ID Tire Inflation Pressure" value was the cause of the output DTC.

      HINT: 

      • Identify the malfunctioning tire pressure warning valve and transmitter by repeatedly decreasing the tire pressure for each tire.
      • Record which "ID Tire Inflation Pressure" value corresponds to each tire.
    9. Check the Data List.
      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.
      • Record the transmitter IDs and positions of transmitters that are normal.
    10. After confirming that the "ID Tire Inflation Pressure" value for one tire has changed, repeat this procedure one by one. Identify the transmitter not received.

      Result

      Result Proceed to
      Change in all tire inflation pressure data A
      No change in all tire inflation pressure data B
      No change in any tire inflation pressure data C

    Result: 

    A 

    END 

    Result: 

    C 

    See step  3

    Result: 

    B 

    See step  2

  2. CHECK TRANSMITTER ID 
    1. Turn the power switch off.
    2. Connect the Techstream to the DLC3.
    3. Turn the power switch on (IG).
    4. Turn the Techstream on.
    5. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
    6. Read the Data List according to the display on the Techstream.

      Chassis > Tire Pressure Monitor > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Registered ID 1 Code Registered ID1 code min.: 0
      max.: FFFFFFF*1      		 ID No. registered for transmitter ID1 displayed -
      Registered ID 2 Code Registered ID2 code min.: 0
      max.: FFFFFFF*1      		 ID No. registered for transmitter ID2 displayed -
      Registered ID 3 Code Registered ID3 code min.: 0
      max.: FFFFFFF*1      		 ID No. registered for transmitter ID3 displayed -
      Registered ID 4 Code Registered ID4 code min.: 0
      max.: FFFFFFF*1      		 ID No. registered for transmitter ID4 displayed -

      HINT: 

      • *1: Displayed only when the ID No. is not registered.
      • The wheel position cannot be determined from ID1 through ID4 on the Data List.

      Chassis > Tire Pressure Monitor > Data List 

      Tester Display
      Registered ID 1 Code
      Registered ID 2 Code
      Registered ID 3 Code
      Registered ID 4 Code
    7. Disassemble all of the tires and check the tire pressure warning valve and transmitter IDs.
      GTY882147Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Tire Pressure Warning Valve and Transmitter - -
      *a Transmitter ID (7-digit Number) - -
    8. Confirm that the ID number on the transmitter and recorded transmitter ID match.

      Result

      Result Proceed to
      Match A
      Do not match B

    Result: 

    A 

    REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER. Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 -] 

    Result: 

    B 

    See step  4

  3. CHECK TRANSMITTER ID 
    1. Turn the power switch off.
    2. Connect the Techstream to the DLC3.
    3. Turn the power switch on (IG).
    4. Turn the Techstream on.
    5. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
    6. Read the Data List according to the display on the Techstream.

      Chassis > Tire Pressure Monitor > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Registered ID 1 Code Registered ID1 code min.: 0
      max.: FFFFFFF*1      		 ID No. registered for transmitter ID1 displayed -
      Registered ID 2 Code Registered ID2 code min.: 0
      max.: FFFFFFF*1      		 ID No. registered for transmitter ID2 displayed -
      Registered ID 3 Code Registered ID3 code min.: 0
      max.: FFFFFFF*1      		 ID No. registered for transmitter ID3 displayed -
      Registered ID 4 Code Registered ID4 code min.: 0
      max.: FFFFFFF*1      		 ID No. registered for transmitter ID4 displayed -

      HINT: 

      • *1: Displayed only when the ID No. is not registered.
      • The wheel position cannot be determined from ID1 through ID4 on the Data List.

      Chassis > Tire Pressure Monitor > Data List 

      Tester Display
      Registered ID 1 Code
      Registered ID 2 Code
      Registered ID 3 Code
      Registered ID 4 Code
    7. Disassemble all of the tires and check the tire pressure warning valve and transmitter IDs.
      GTY882147Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Tire Pressure Warning Valve and Transmitter - -
      *a Transmitter ID (7-digit Number) - -
    8. Confirm that the ID number on the transmitter and recorded transmitter ID match.

      Result

      Result Proceed to
      Match A
      Do not match B

    Result: 

    A 

    REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER. Refer to  REMOVAL [08/2019 -] 

    Result: 

    B 

    See step  4

  4. REGISTRATION OF TRANSMITTER ID 
    1. Perform registration.

      Refer to REGISTRATION [08/2019 -]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. PERFORM INITIALIZATION 
    1. Perform initialization.

      Refer to INITIALIZATION [04/2018 -]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    END 

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