Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM000000XN400ZX
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2141/41-C2145/45; Transmitter ID1 Error; 2007 MY LX470 [08/2006 -        ]

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

The tire pressure warning valve and transmitters that are installed in the tire and wheel assemblies measure the air pressure of the tires. The measured values are transmitted to the tire pressure warning antenna on the body as radio waves and then sent to the tire pressure warning ECU and receiver. 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 comes on.

When the internal circuit of a tire pressure warning valve and transmitter is malfunctioning, one of these DTCs are output.

DTC Code

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 absolute pressure range 0 to 637.5 kPa (0 to 6.5 kgf/cm 2 , 0 to 92.5 psi), outside the relative pressure range -100 to 537.5 kPa (-1 to 5.4 kgf/cm 2 , -14 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 the surrounding area.

  • Tire pressure warning valve and transmitter
  • Tire pressure warning ECU and receiver

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 and receiver, read the IDs stored in the old ECU using the intelligent tester and write them down before removal.
  • It is necessary to perform initialization 2007 MY LX470 [08/2006 -        ]; TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: REGISTRATION after registration 2007 MY LX470 [08/2006 -        ]; TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: INITIALIZATION of the transmitter IDs into the tire pressure warning ECU and receiver after the ECU and/or valve and transmitter has been replaced.

PROCEDURE

1.

IDENTIFY TRANSMITTER CORRESPONDING TO DTC

(a) Set the tire pressure to the specified value 2007 MY LX470 [08/2006 -        ]; TIRE AND WHEEL: TIRE AND WHEEL SYSTEM: INSPECTION+ .

(b) Display the "TIREPRESS" data for each wheel using the intelligent tester.

(c) Rapidly reduce the tire pressure for each wheel at least 40 kPa (0.4 kgf/cm 2 , 5.8 psi) within 30 seconds. If "TIREPRESS" data displayed on the tester (ID1 to ID5) does not change, the tire pressure warning valve and transmitter corresponding to the unchanged "TIREPRESS" 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 "TIREPRESS" data (ID1 to ID5) corresponds to which tire.

Tire pressure warning ECU and receiver

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

TIREPRESS1

ID1 tire inflation pressure /

min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi)

max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi)

Actual tire inflation pressure

If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, data has not been received.*

TIREPRESS2

ID2 tire inflation pressure /

min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi)

max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi)

Actual tire inflation pressure

If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, data has not been received.*

TIREPRESS3

ID3 tire inflation pressure /

min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi)

max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi)

Actual tire inflation pressure

If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, data has not been received.*

TIREPRESS4

ID4 tire inflation pressure /

min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi)

max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi)

Actual tire inflation pressure

If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, data has not been received.*

TIREPRESS5

ID5 tire inflation pressure /

min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi)

max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi)

Actual tire inflation pressure

If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, 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 2007 MY LX470 [08/2006 -        ]; TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2121/21,...,C2185/85; No Signal from Transmitter ID1 in Main Mode .

(d) Check the DATA LIST.

Condition

Detection Condition

One of "TIREPRESS" data (ID1 to ID5) changed.

Normal

"TIREPRESS" data did not change.

Transmitter corresponding to DTC

NOTICE:

  • It takes about 2 or 3 minutes to display the updated tire pressure data.
  • When "TIREPRESS" 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.

(e) When the "TIREPRESS" data (ID1 to ID5) has changed, repeat this procedure to identify the tire pressure warning valve and transmitter that corresponds to the DTC.

(f) When all of the "TIREPRESS" data (ID1 to ID5) have changed, identify the malfunctioning tire pressure warning valve and transmitter using recorded ID numbers and output DTC.

(g) Set the tire pressures to the appropriate specified values.

NEXT

2.

REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER

(a) Replace the identified tire pressure warning valve and transmitter with a new one 2007 MY LX470 [08/2006 -        ]; TIRE AND WHEEL: TIRE PRESSURE WARNING VALVE AND TRANSMITTER: REPLACEMENT .

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 tester and recorded.
NEXT

3.

REGISTRATION OF TRANSMITTER ID

(a) Register the transmitter ID for all wheels 2007 MY LX470 [08/2006 -        ]; TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: REGISTRATION .

NEXT

4.

PERFORM INITIALIZATION

(a) Perform initialization 2007 MY LX470 [08/2006 -        ]; TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: INITIALIZATION .

NEXT

5.

READ VALUE USING DATA LIST (TIRE INFLATION PRESSURE)

(a) Turn the ignition switch OFF.

(b) Connect the intelligent tester to the DLC3.

(c) Turn the ignition switch ON and the tester ON.

(d) Following the display on the intelligent tester, select the "DATA LIST".

(e) Check the values by referring to the table below.

Tire pressure warning ECU and receiver

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

TIREPRESS1

ID1 tire inflation pressure /

min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi)

max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi)

Actual tire inflation pressure

If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, data has not been received.*

TIREPRESS2

ID2 tire inflation pressure /

min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi)

max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi)

Actual tire inflation pressure

If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, data has not been received.*

TIREPRESS3

ID3 tire inflation pressure /

min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi)

max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi)

Actual tire inflation pressure

If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, data has not been received.*

TIREPRESS4

ID4 tire inflation pressure /

min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi)

max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi)

Actual tire inflation pressure

If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, data has not been received.*

TIREPRESS5

ID5 tire inflation pressure /

min.: Absolute pressure / 0 kPa (0 kgf/cm 2 , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm 2 , -14 psi)

max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm 2 , 92.5 psi), Relative pressure / 537.5 kPa (5.4 kgf/cm 2 , 78 psi)

Actual tire inflation pressure

If 0 kPa (0 kgf/cm 2 , 0 psi) is displayed for absolute pressure or -100 kPa (-1 kgf/cm 2 , -14 psi) is displayed for relative pressure, data has not been received.*

HINT:

*: It may take about 2 or 3 minutes until the values are displayed.

Condition

Proceed to

All tire pressure readings are equal to specified values.

A

Tire pressure values are not displayed.

B
A

END

B

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER