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 pressures. The measured values are transmitted to the tire pressure warning ECU and receiver in the vehicle as radio waves. The ECU compares the measured air pressure values with the air pressure threshold. When the measured air pressure value is less than this threshold, the warning light in the combination meter 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 range 0 to 800 kPa (0 to 8.2 kgf/cm^{2}, 0 to 116 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 or the surrounding area. 

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
IDENTIFY TRANSMITTER CORRESPONDING TO DTC
Set the tire pressure to the specified values Click here.
Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
Display the "ID Tire Inflation Pressure" data for each wheel using the GTS.
Rapidly reduce the tire pressure for each wheel at least 40 kPa (0.4 kg/cm^{2}, 5.8 psi) within 30 seconds. If "ID Tire Inflation Pressure" displayed on the GTS does not change, the tire pressure warning valve and transmitter corresponding to the unchanged "ID Tire Inflation Pressure" data 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" data corresponds to each tire.
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)/ 900 kPa (9.2 kgf/cm^{2}, 131 psi), Relative pressure (gauge)/ 800 kPa (8.2 kgf/cm^{2}, 116 psi) 
Actual tire inflation pressure  If N/A is displayed, 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)/ 900 kPa (9.2 kgf/cm^{2}, 131 psi), Relative pressure (gauge)/ 800 kPa (8.2 kgf/cm^{2}, 116 psi) 
Actual tire inflation pressure  If N/A is displayed, 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)/ 900 kPa (9.2 kgf/cm^{2}, 131 psi), Relative pressure (gauge)/ 800 kPa (8.2 kgf/cm^{2}, 116 psi) 
Actual tire inflation pressure  If N/A is displayed, 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)/ 900 kPa (9.2 kgf/cm^{2}, 131 psi), Relative pressure (gauge)/ 800 kPa (8.2 kgf/cm^{2}, 116 psi) 
Actual tire inflation pressure  If N/A is displayed, 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)/ 900 kPa (9.2 kgf/cm^{2}, 131 psi), Relative pressure (gauge)/ 800 kPa (8.2 kgf/cm^{2}, 116 psi) 
Actual tire inflation pressure  If N/A is displayed, data has not been received.* 
Tech Tips
*: 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 C2125/25 Click here.
The wheel position cannot be determined from ID1 through ID5 on the Data List.
Check the Data List.
Note
It may take a few minutes to display the updated tire pressure data.
When the "ID Tire Inflation Pressure" data 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 data.
Record the transmitter ID of which "ID Tire Inflation Pressure" data corresponds to each tire.
After confirming that the "ID Tire Inflation Pressure" value for one tire has changed, repeat this procedure for each tire. Identify the transmitter that corresponds to the DTC.
When all of the "ID Tire Inflation Pressure" data (ID1 to ID5) has changed, identify the malfunctioning tire pressure warning valve and transmitter using the recorded ID numbers and output DTCs.
Result  


B 
END 
A 
REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER
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 
REGISTRATION OF TRANSMITTER ID
Perform registration Click here.
NEXT 
PERFORM INITIALIZATION
Set the tire pressure to the specified value Click here.
Perform initialization Click here.
NEXT 
CONFIRM TIRE INFLATION PRESSURE (DATA LIST)
Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
Check the values by referring to the table below.
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)/ 900 kPa (9.2 kgf/cm^{2}, 131 psi), Relative pressure (gauge)/ 800 kPa (8.2 kgf/cm^{2}, 116 psi) 
Actual tire inflation pressure  If N/A is displayed, 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)/ 900 kPa (9.2 kgf/cm^{2}, 131 psi), Relative pressure (gauge)/ 800 kPa (8.2 kgf/cm^{2}, 116 psi) 
Actual tire inflation pressure  If N/A is displayed, 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)/ 900 kPa (9.2 kgf/cm^{2}, 131 psi), Relative pressure (gauge)/ 800 kPa (8.2 kgf/cm^{2}, 116 psi) 
Actual tire inflation pressure  If N/A is displayed, 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)/ 900 kPa (9.2 kgf/cm^{2}, 131 psi), Relative pressure (gauge)/ 800 kPa (8.2 kgf/cm^{2}, 116 psi) 
Actual tire inflation pressure  If N/A is displayed, 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)/ 900 kPa (9.2 kgf/cm^{2}, 131 psi), Relative pressure (gauge)/ 800 kPa (8.2 kgf/cm^{2}, 116 psi) 
Actual tire inflation pressure  If N/A is displayed, data has not been received.* 
Tech Tips
*: It may take a few minutes until the values are displayed.
When no "ID Tire Inflation Pressure" data has 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 data.
The wheel position cannot be determined from ID1 through ID5 on the Data List.
Result  


B 
END 
A 
REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER Click here