- Tire pressure warning valve and transmitter
- Tire pressure warning ECU
| Last Modified: 11-27-2007 | 1.6 C | |
| Service Category: Suspension | Section: Tire Pressure Monitoring | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000000XN4031X |
| Title: TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: DESCRIPTION (2008 LX570) | ||
|
DTC |
C2141/41 |
Transmitter ID1 Error |
|
DTC |
C2142/42 |
Transmitter ID2 Error |
|
DTC |
C2143/43 |
Transmitter ID3 Error |
|
DTC |
C2144/44 |
Transmitter ID4 Error |
|
DTC |
C2145/45 |
Transmitter ID5 Error |
DESCRIPTION
When the internal circuit of a tire pressure warning valve and transmitter is malfunctioning, one of these DTCs is stored.
|
DTC Code |
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 stored. This will happen in situations where the inflation pressure is outside the range -100 to 537.5 kPa (-1.0 kgf/cm2 to 5.4 kgf/cm2, -14 psi to 78 psi), the temperature inside the tire is outside the specified range -40 to 120°C (-40 to 253°F), or an error occurs in the tire pressure warning valve and transmitter or any of the surrounding parts. |
|
HINT:
It is necessary to perform the procedure to identify the tire pressure warning valve and transmitter that is malfunctioning because it cannot be identified by the output DTC.
INSPECTION PROCEDURE
NOTICE:
- When replacing the tire pressure warning ECU, read the 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 after the ECU and/or the tire pressure warning valve and transmitter has been replaced.
PROCEDURE
|
1. |
IDENTIFY TRANSMITTER CORRESPONDING TO DTC |
(a) Set the tire pressures of all tires to the specified value(s)
.
(b) Turn the engine switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the engine switch on (IG) and turn the Techstream on.
(e) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(f) Display the "ID Tire Inflation Pressure" data for each wheel using the Techstream.
(g) Rapidly reduce the tire pressure for each tire at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds. If "ID Tire Inflation Pressure" data displayed on the Techstream (ID1 to ID5) 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.
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" data (ID1 to ID5) corresponds to which tire.
(h) Check the Data List.
Tire Pressure Monitor
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
ID1 Tire Inflation Pressure |
ID1 tire inflation pressure/ min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (gauge) / -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure (abs) / 637.5 kPa (6.5 kgf/cm2, 92.5 psi), Relative pressure (gauge) / 537.5 kPa (5.4 kgf/cm2, 78 psi) |
Actual tire inflation pressure |
If 0 kPa (0 kgf/cm2, 0 psi) is displayed for the absolute pressure (abs) or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for the relative pressure (gauge), the data has not been received.* |
|
ID2 Tire Inflation Pressure |
ID2 tire inflation pressure/ min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (gauge) / -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure (abs) / 637.5 kPa (6.5 kgf/cm2, 92.5 psi), Relative pressure (gauge) / 537.5 kPa (5.4 kgf/cm2, 78 psi) |
Actual tire inflation pressure |
If 0 kPa (0 kgf/cm2, 0 psi) is displayed for the absolute pressure (abs) or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for the relative pressure (gauge), the data has not been received.* |
|
ID3 Tire Inflation Pressure |
ID3 tire inflation pressure/ min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (gauge) / -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure (abs) / 637.5 kPa (6.5 kgf/cm2, 92.5 psi), Relative pressure (gauge) / 537.5 kPa (5.4 kgf/cm2, 78 psi) |
Actual tire inflation pressure |
If 0 kPa (0 kgf/cm2, 0 psi) is displayed for the absolute pressure (abs) or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for the relative pressure (gauge), the data has not been received.* |
|
ID4 Tire Inflation Pressure |
ID4 tire inflation pressure/ min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (gauge) / -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure (abs) / 637.5 kPa (6.5 kgf/cm2, 92.5 psi), Relative pressure (gauge) / 537.5 kPa (5.4 kgf/cm2, 78 psi) |
Actual tire inflation pressure |
If 0 kPa (0 kgf/cm2, 0 psi) is displayed for the absolute pressure (abs) or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for the relative pressure (gauge), the data has not been received.* |
|
ID5 Tire Inflation Pressure |
ID5 tire inflation pressure/ min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (gauge) / -100 kPa (-1.0 kgf/cm2, -14 psi) max.: Absolute pressure (abs) / 637.5 kPa (6.5 kgf/cm2, 92.5 psi), Relative pressure (gauge) / 537.5 kPa (5.4 kgf/cm2, 78 psi) |
Actual tire inflation pressure |
If 0 kPa (0 kgf/cm2, 0 psi) is displayed for the absolute pressure (abs) or -100 kPa (-1.0 kgf/cm2, -14 psi) is displayed for the relative pressure (gauge), the data has not been received.* |
HINT:
-
*: It may take about 2 or 3 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
.
- The tire pressure information reception condition can also be confirmed through the multi-information display tire pressure display screen.
Result
|
Result |
Detection Condition |
|---|---|
|
"Tire Inflation Pressure" data (ID1 to ID5) changed. |
Normal |
|
One of "Tire Inflation Pressure" data did not change. |
Transmitter corresponding to DTC |
NOTICE:
- It takes about 2 or 3 minutes to display the updated tire pressure data.
- When "ID Tire Inflation Pressure" data has not changed, reset the tire pressure to the appropriate specified value and rotate the tire 90 to 270°. Then forcibly transmit the transmitter ID and recheck.
- Record the transmitter ID and position of transmitters that are normal.
(i) When an "ID Inflation Pressure" data value (one of ID1 to ID5) has changed, repeat this procedure for each tire.
(j) 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 DTC.
(k) Set the tire pressure of all tires to the specified value(s)
.
|
|
2. |
REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER |
(a) Replace the identified tire pressure warning valve and transmitter with a new one
.
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 that are not replaced should be checked using the Techstream and recorded.
|
|
3. |
PERFORM REGISTRATION OF TRANSMITTER ID |
(a) Register the transmitter IDs for all wheels
.
|
|
4. |
PERFORM INITIALIZATION |
(a) Perform initialization
.
|
|
5. |
CONFIRM TIRE INFLATION PRESSURE (DATA LIST)
|
|
|
|