C2141

TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2141/41-C2144/44: Transmitter ID1 Error
C2144/44 - Transmitter ID4 Error

DESCRIPTION

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





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 Initialization after registration 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 to the specified values Service Precautions.

(b) Turn the ignition switch OFF.

(c) Connect the Techstream to the DLC3.

(d) Turn the ignition switch ON 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 wheel 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 ID4) 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 ID4) corresponds to which tire.

(h) Check the Data List.

Tire Pressure Monitor





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 C2124/24 C2121.

Result





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 Tire Inflation Pressure" data value (one of ID1 to ID4) has changed, repeat this procedure for each tire.

(j) When all of the "ID Tire Inflation Pressure" data (ID1 to ID4) has changed, identify the malfunctioning tire pressure warning valve and transmitter using the recorded ID numbers and output DTC.

NEXT -- Continue to next step.

2. REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER

(a) Replace the identified tire pressure warning valve and transmitter with a new one Removal.

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 valves and transmitters that are not replaced should be checked using the Techstream and recorded.

NEXT -- Continue to next step.

3. PERFORM REGISTRATION OF TRANSMITTER ID

(a) Register the transmitter IDs for all wheels Registration.

NEXT -- Continue to next step.

4. PERFORM INITIALIZATION

(a) Perform initialization Initialization.

NEXT -- Continue to next step.

5. CONFIRM TIRE INFLATION PRESSURE (DATA LIST) C2121

B -- END

A -- REPLACE TIRE PRESSURE WARNING ECU Removal