TIRE PRESSURE WARNING SYSTEM, Diagnostic DTC:C2141/41, C2142/42, C2143/43, C2144/44, C2145/45

DTC Code DTC Name
C2141/41 Transmitter ID1 Error
C2142/42 Transmitter ID2 Error
C2143/43 Transmitter ID3 Error
C2144/44 Transmitter ID4 Error
C2145/45 Transmitter ID5 Error

DESCRIPTION

The tire pressure warning valve and transmitters that are installed in the tire and wheel assemblies measure the tire pressure of each wheel. The measured values are transmitted to the tire pressure warning ECU and receiver in the vehicle as radio waves. The ECU compares the measured tire pressure values with the tire pressure threshold. When the measured tire pressure value is less than this threshold, the warning light in the combination meter assembly illuminates.

When the internal circuit of a tire pressure warning valve and transmitter is malfunctioning, one of these DTCs is output.

DTC No. DTC Detection Condition Trouble Area

C2141/41

C2142/42

C2143/43

C2144/44

C2145/45*

If an "ERROR" signal is received 3 times consecutively, the tire pressure warning valve and transmitter will be judged as defective and a DTC will be output.

This will happen in situations where the inflation pressure is outside the specified range (0 to 380 kPa (0 to 3.9 kgf/cm2, 0 to 55 psi)), the temperature inside the tire is outside the specified range (-40 to 120°C (-40 to 248°F)), or an error occurs in the tire pressure warning valve and transmitter.

  • Tire pressure warning valve and transmitter

  • Tire pressure warning ECU and receiver

*: w/ Full Size Spare Tire

Tech Tips

It is necessary to perform the following procedure to identify the tire pressure warning valve and transmitter that is malfunctioning because it cannot be identified by the output DTC.

INSPECTION PROCEDURE

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 Click here 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.

PROCEDURE


  1. IDENTIFY TRANSMITTER CORRESPONDING TO DTC


    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.

      Tech Tips


      • 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.

      Tire Pressure Monitor
      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*2

      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

      Tech Tips


      • *1: 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.

      • *2: w/ Full Size Spare 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 that corresponds to the DTC.

      Tech Tips

      When all of the "ID Tire Inflation Pressure" values have changed, identify the malfunctioning tire pressure warning valve and transmitter using the recorded ID numbers and output DTCs.

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

    B

    END

    A

  2. REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER


    1. Replace the identified tire pressure warning valve and transmitter with a new one Click here.

      Tech Tips


      • Before installing a new tire pressure warning valve and transmitter, read and write down its transmitter ID.

      • The IDs for the tire pressure warning valve and transmitters which are not replaced should be checked using the GTS and recorded.


    NEXT

  3. REGISTRATION OF TRANSMITTER ID


    1. Perform registration Click here.


    NEXT

  4. PERFORM INITIALIZATION


    1. Perform initialization Click here.


    NEXT

  5. CONFIRM TIRE INFLATION PRESSURE (DATA LIST)


    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.

      Tire Pressure Monitor
      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*2

      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

      Tech Tips


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

      • *2: w/ Full Size Spare Tire

      • 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

    B

    END

    A

    REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER Click here