Click here

TIRE PRESSURE WARNING SYSTEM, Diagnostic DTC:C2126/26

Click here
Click here
DTC Code DTC Name
C2126/26 Transmitter ID not Received in Main Mode
Click here

DESCRIPTION

After all transmitter IDs are registered, DTC C2126/26 is stored in the tire pressure warning ECU and receiver and the tire pressure warning light blinks for 1 minute and then illuminates.

When the tire pressure warning ECU and receiver successfully receives radio waves from all the transmitters whose IDs are stored in the ECU, DTC C2126/26 is cleared and the tire pressure warning light goes off.

DTC No. DTC Detection Condition Trouble Area
C2126/26 After transmitter ID registration is completed, ECU does not receive radio waves from transmitters whose IDs are stored in ECU.

  • Transmitter ID registration failure

  • Tire pressure warning valve and transmitter

  • Tire pressure warning ECU and receiver
Tip:

The purpose of this DTC is to help prevent delivering a vehicle that has incorrectly registered transmitter IDs. After all IDs are registered, DTC C2126/26 is detected and the tire pressure warning light blinks for 1 minute and then illuminates. If the tire pressure warning light does not go off after a little while, the transmitter IDs may be incorrectly registered.

Click here

WIRING DIAGRAM

Click here

CAUTION / NOTICE / HINT

Note:

  • When replacing the tire pressure warning ECU and receiver, read the transmitter IDs stored in the old ECU using the GTS and write them down before removal.

  • It is necessary to perform initialization (See page ) after registration (Click here) of the transmitter IDs into the tire pressure warning ECU and receiver if the ECU and/or one of the valve and transmitters has been replaced.

Click here

PROCEDURE


  1. Click here

    IDENTIFY TRANSMITTER NOT RECEIVED


    1. Set the tire pressure to the specified value (Click here).

    2. Turn the power switch off.

    3. Connect the GTS to the DLC3.

    4. Turn the power switch on (IG).

    5. Turn the GTS 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 GTS.

    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 GTS 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.

      Tip:

      • 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.

      Table 1. Tire Pressure Monitor
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      ID 1 Tire Inflation Pressure

      ID1 tire inflation pressure/

      min.: Absolute pressure / 50 kPa (0.5 kgf/cm2, 7 psi), Relative pressure / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure / 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 / 50 kPa (0.5 kgf/cm2, 7 psi), Relative pressure / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure / 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 / 50 kPa (0.5 kgf/cm2, 7 psi), Relative pressure / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure / 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 / 50 kPa (0.5 kgf/cm2, 7 psi), Relative pressure / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure / 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 / 50 kPa (0.5 kgf/cm2, 7 psi), Relative pressure / 0 kPa (0 kgf/cm2, 0 psi)

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

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

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

    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
      Condition Proceed to
      One or more transmitter is abnormal A
      All transmitters are normal B

  2. Click here

    CHECK TRANSMITTER ID


    1. Turn the power switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the GTS on.

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

    6. Check the values by referring to the table below.

      Table 2. Tire Pressure Monitor
      Tester Display Measurement Item/Display 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 -
      Registered ID 5 Code

      Registered ID5 code/

      min.: 0

      max.: FFFFFFF*1

      		 ID No. registered for transmitter ID5 displayed -
      Tip:

      • *1: Displayed only when the ID No. is not registered.

    7. B0011EJE01

      Check the ID number on the identified transmitter by removing it from the tire and wheel.

      Table 3. Text in Illustration
      *1 Tire Pressure Warning Valve and Transmitter *2 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

  3. Click here

    REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER


    1. Replace the tire pressure warning valve and transmitter (Click here).


  4. Click here

    REGISTRATION OF TRANSMITTER ID


    1. Perform registration (Click here).


  5. Click here

    PERFORM INITIALIZATION


    1. Perform initialization (Click here).


  6. Click here

    CONFIRM TIRE INFLATION PRESSURE (DATA LIST)


    1. Turn the power switch off.

    2. Connect GTS to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the GTS on.

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

    6. Check the values by referring to the table below.

      Table 4. Tire Pressure Monitor
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      ID 1 Tire Inflation Pressure

      ID1 tire inflation pressure/

      min.: Absolute pressure / 50 kPa (0.5 kgf/cm2, 7 psi), Relative pressure / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure / 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 / 50 kPa (0.5 kgf/cm2, 7 psi), Relative pressure / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure / 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 / 50 kPa (0.5 kgf/cm2, 7 psi), Relative pressure / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure / 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 / 50 kPa (0.5 kgf/cm2, 7 psi), Relative pressure / 0 kPa (0 kgf/cm2, 0 psi)

      max.: Absolute pressure / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure / 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 / 50 kPa (0.5 kgf/cm2, 7 psi), Relative pressure / 0 kPa (0 kgf/cm2, 0 psi)

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

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

      • *1: 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.

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

    • A

      REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER (Click here)

    • B

      END