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. | Detection Item | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|
| C2141 | 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 specified range (0 to 800 kPa (0 to 8.2 kgf/cm2, 0 to 116 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. |
Tire pressure warning valve and transmitter | - |
| C2142 | 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 specified range (0 to 800 kPa (0 to 8.2 kgf/cm2, 0 to 116 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. |
Tire pressure warning valve and transmitter | - |
| C2143 | 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 specified range (0 to 800 kPa (0 to 8.2 kgf/cm2, 0 to 116 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. |
Tire pressure warning valve and transmitter | - |
| C2144 | 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 specified range (0 to 800 kPa (0 to 8.2 kgf/cm2, 0 to 116 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. |
Tire pressure warning valve and transmitter | - |
| C2145 | 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 specified range (0 to 800 kPa (0 to 8.2 kgf/cm2, 0 to 116 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. |
Tire pressure warning valve and transmitter | - |
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.
When replacing the tire pressure warning valve and transmitter, read the transmitter IDs and number of the transmitters (4 or 5) stored in the old ECU using the GTS and write them down before removal.
It is necessary to perform initializationSuspension>TIRE PRESSURE MONITORING>TIRE PRESSURE WARNING SYSTEM>INITIALIZATION201906,999999,_53,_078885,_0382739,RM100000001IHE2, after registrationSuspension>TIRE PRESSURE MONITORING>TIRE PRESSURE WARNING SYSTEM>REGISTRATION201906,999999,_53,_078885,_0382739,RM100000001IHE1, of the transmitter IDs into the tire pressure warning ECU and receiver if one of the valve and transmitters has been replaced.
Choose the model to be inspected.
| Result | Proceed to |
|---|---|
| w/ Tire Inflation Pressure Display Function | A |
| w/o Tire Inflation Pressure Display Function | B |
A
B
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 Position" value for each wheel using the GTS.
Refer to the following chart and check the wheel position of the DTC and transmitter match.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| ID 1 Tire Position | ID1 Tire Position | No Information or FL or FR or RL or RR or Spare or Judging | ID1 tire position is displayed | ·
If no tire position information is stored, "No Information" will be displayed. ·
w/ Tire Inflation Pressure Display Function |
| ID 2 Tire Position | ID2 Tire Position | No Information or FL or FR or RL or RR or Spare or Judging | ID2 tire position is displayed | ·
If no tire position information is stored, "No Information" will be displayed. ·
w/ Tire Inflation Pressure Display Function |
| ID 3 Tire Position | ID3 Tire Position | No Information or FL or FR or RL or RR or Spare or Judging | ID3 tire position is displayed | ·
If no tire position information is stored, "No Information" will be displayed. ·
w/ Tire Inflation Pressure Display Function |
| ID 4 Tire Position | ID4 Tire Position | No Information or FL or FR or RL or RR or Spare or Judging | ID4 tire position is displayed | ·
If no tire position information is stored, "No Information" will be displayed. ·
w/ Tire Inflation Pressure Display Function |
| ID 5 Tire Position | ID5 Tire Position | No Information or FL or FR or RL or RR or Spare or Judging | ID5 tire position is displayed | ·
If no tire position information is stored, "No Information" will be displayed. ·
w/ Tire Inflation Pressure Display Function |
Refer to the following chart for the Data List items that correspond to the DTCs.
| DTC No. | Detection Item | Data List |
|---|---|---|
| C2141 | Transmitter ID1 Error | ID1 Tire Position |
| C2142 | Transmitter ID2 Error | ID2 Tire Position |
| C2143 | Transmitter ID3 Error | ID3 Tire Position |
| C2144 | Transmitter ID4 Error | ID4 Tire Position |
| C2145 | Transmitter ID5 Error | ID5 Tire Position |
| Tester Display |
|---|
| ID 1 Tire Position |
| ID 2 Tire Position |
| ID 3 Tire Position |
| ID 4 Tire Position |
| ID 5 Tire Position |
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Set the tire pressure to the specified value.
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" value for each wheel using the GTS.
| 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) / 900 kPa (9.2 kgf/cm2, 131 psi), Relative pressure (Gauge) / 800 kPa (8.2 kgf/cm2, 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/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)
max.: Absolute pressure (abs) / 900 kPa (9.2 kgf/cm2, 131 psi), Relative pressure (Gauge) / 800 kPa (8.2 kgf/cm2, 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/cm2, 0 psi), Relative pressure (Gauge)/ 0 kPa (0 kgf/cm2, 0 psi)
max.: Absolute pressure (abs) / 900 kPa (9.2 kgf/cm2, 131 psi), Relative pressure (Gauge) / 800 kPa (8.2 kgf/cm2, 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/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)
max.: Absolute pressure (abs) / 900 kPa (9.2 kgf/cm2, 131 psi), Relative pressure (Gauge) / 800 kPa (8.2 kgf/cm2, 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/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi)
max.: Absolute pressure (abs) / 900 kPa (9.2 kgf/cm2, 131 psi), Relative pressure (Gauge) / 800 kPa (8.2 kgf/cm2, 116 psi) |
Actual tire inflation pressure | If N/A is displayed, data has not been received.* |
*: 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 to C2125.
| 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 |
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.
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.
Check the Data List.
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.
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" values have changed, identify the malfunctioning tire pressure warning valve and transmitter using the recorded ID numbers and output DTCs.
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| NEXT |
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