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. | Detection Item |
DTC Detection Condition | Trouble Area |
Note | | 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 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
| - | |
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 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
| - | |
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 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
| - | |
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 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
| - |
HINT: 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
NOTICE:
- When replacing the tire pressure warning ECU and receiver, read the
transmitter IDs stored in the old ECU using the Techstream and write
them down before removal.
- It is necessary to perform initialization
 after registration
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 |
(a) Set the tire pressure to the specified value. Click here
(b) Turn the ignition switch to ON and let the vehicle idle for 2 to 3 minutes.
HINT: For
this vehicle, it may take longer than usual to receive data from the
tire pressure warning valve and transmitter while the Data List is
displayed. Therefore, before displaying the Data List, wait 2 to 3
minutes to receive data from the tire pressure warning valve and
transmitter. (c) Turn the ignition switch off. (d) Connect the Techstream to the DLC3.
(e) Turn the ignition switch to ON. (f) Turn the Techstream on.
(g) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(h) Display the "ID Tire Inflation Pressure" value for each wheel using the Techstream.
(i)
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 Techstream 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.
HINT:
- 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.
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/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.* | |
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.* | |
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.* | |
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.* |
HINT:
- *: 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.
Click here
- The wheel position cannot be determined from ID1 through ID4 on the Data List.
(j) Check the Data List.
NOTICE:
- 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.
(k) 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. (l) When all of the "ID Tire Inflation
Pressure" value has changed, identify the malfunctioning tire pressure
warning valve and transmitter using the recorded ID numbers and output
DTCs. |
Result | Proceed to | |
One or more transmitter is abnormal |
A | | All transmitters are normal |
B |
| B |
 | USE SIMULATION METHOD TO CHECK |
|
A |
 | |
| 2. |
REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER |
(a) Replace the identified tire pressure warning valve and transmitter with a new one.
Click here
HINT:
- 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 Techstream and recorded.
|
NEXT | |
| |
| 3. |
REGISTRATION OF TRANSMITTER ID | (a) Perform registration.
Click here
|
NEXT | |
| |
| 4. |
PERFORM INITIALIZATION | (a) Perform initialization.
Click here
|
NEXT | |
| |
| 5. |
CONFIRM TIRE INFLATION PRESSURE (DATA LIST) |
(a) Turn the ignition switch off. (b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON. (d) Turn the Techstream on.
(e) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(f) 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/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.* | |
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.* | |
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.* | |
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.* |
HINT:
- *: It may take a few minutes until the values are displayed.
For this vehicle, data reception from the tire pressure
warning valve and transmitter may worsen while displaying the Data List
and it may takes longer than usual to receive data.
If
data reception worsens while displaying the Data List, rapidly decrease
the tire pressure by 20 to 30 kPa (this increases the valve
transmission frequency).
- The wheel position cannot be determined from ID1 through ID4 on the Data List.
- 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 | 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 |
| B |
| END | |
