TIRE PRESSURE WARNING SYSTEM, Diagnostic DTC:C2141/41,C2142/42,C2143/43,C2144/44 and 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 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 assembly illuminates.
When the internal circuit of a tire pressure warning valve and transmitter is malfunctioning, one of these DTCs is output.
DTC No. 
Detection Item 
DTC Detection Condition 
Trouble Area 

C2141/41 
Transmitter ID1 Error 
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 380 kPa (0 to 3.9 kgf/cm^{2}, 0 to 55 psi), the temperature inside the tire is outside the specified range 40 to 215°C (40 to 419°F), or an error occurs in the tire pressure warning valve and transmitter or the surrounding area. 

C2142/42 
Transmitter ID2 Error 
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 380 kPa (0 to 3.9 kgf/cm^{2}, 0 to 55 psi), the temperature inside the tire is outside the specified range 40 to 215°C (40 to 419°F), or an error occurs in the tire pressure warning valve and transmitter or the surrounding area. 

C2143/43 
Transmitter ID3 Error 
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 380 kPa (0 to 3.9 kgf/cm^{2}, 0 to 55 psi), the temperature inside the tire is outside the specified range 40 to 215°C (40 to 419°F), or an error occurs in the tire pressure warning valve and transmitter or the surrounding area. 

C2144/44 
Transmitter ID4 Error 
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 380 kPa (0 to 3.9 kgf/cm^{2}, 0 to 55 psi), the temperature inside the tire is outside the specified range 40 to 215°C (40 to 419°F), or an error occurs in the tire pressure warning valve and transmitter or the surrounding area. 

C2145/45 
Transmitter ID5 Error 
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 380 kPa (0 to 3.9 kgf/cm^{2}, 0 to 55 psi), the temperature inside the tire is outside the specified range 40 to 215°C (40 to 419°F), or an error occurs in the tire pressure warning valve and transmitter or the surrounding area. 

C2145/45: w/ Full Size Spare Tire
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.
CAUTION / NOTICE / HINT
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 hereClick 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.
Turn the power switch off.
Connect the GTS to the DLC3.
Turn the power switch on (IG).
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.
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" data corresponds to each tire.
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
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) / 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
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) / 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
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) / 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
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) / 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
If N/A is displayed, data has not been received.*
w/ Full Size Spare Tire
Tip:*: 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).
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
Check the Data List.
Result
Result
Proceed to
One of "ID Tire Inflation Pressure" data changed.
Normal
"ID Tire Inflation Pressure" data did not change.
Transmitter corresponding to DTC
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.
When the "ID Tire Inflation Pressure" data has changed, repeat this procedure to identify the tire pressure warning valve and transmitter that corresponds to the DTC.
When all of the "ID Tire Inflation Pressure" data has changed, identify the malfunctioning tire pressure warning valve and transmitter using the recorded ID numbers and output DTCs.
Result
Proceed to
NEXT
REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER
Replace the identified tire pressure warning valve and transmitter with a new one.
Tip: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.
Result
Proceed to
NEXT
REGISTRATION OF TRANSMITTER ID
Register the transmitter ID for all wheels.
Result
Proceed to
NEXT
PERFORM INITIALIZATION
Perform initialization.
Result
Proceed to
NEXT
CONFIRM TIRE INFLATION PRESSURE (DATA LIST)
Turn the power switch off.
Connect the GTS to the DLC3.
Turn the power switch on (IG).
Turn the GTS on.
Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
Check the values by referring to the table below.
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) / 380kPa (3.9 kgf/cm^{2}, 55 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) / 480 kPa (4.9 kgf/cm^{2}, 70 psi), Relative pressure (Gauge) / 380kPa (3.9 kgf/cm^{2}, 55 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) / 480 kPa (4.9 kgf/cm^{2}, 70 psi), Relative pressure (Gauge) / 380kPa (3.9 kgf/cm^{2}, 55 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) / 480 kPa (4.9 kgf/cm^{2}, 70 psi), Relative pressure (Gauge) / 380kPa (3.9 kgf/cm^{2}, 55 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) / 480 kPa (4.9 kgf/cm^{2}, 70 psi), Relative pressure (Gauge) / 380kPa (3.9 kgf/cm^{2}, 55 psi)
Actual tire inflation pressure
If N/A is displayed, data has not been received.*
w/ Full Size Spare Tire
Tip:*: 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.
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
Proceed to
Tire pressure values are not displayed.
All tire pressure readings are equal to specified values.
All tire pressure readings are equal to specified values. END