C2126

TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2126/26: Transmitter ID not Received in Main Mode
C2126/26 - Transmitter ID not Received in Main Mode

DESCRIPTION

After all IDs are registered, DTC C2126/26 is set in the tire pressure warning ECU and the tire pressure warning light blinks for 1 minute and then comes on.

When the tire pressure warning ECU successfully receives information from all the transmitters whose IDs are stored in the ECU, DTC C2126/26 is deleted and the tire pressure warning light goes off.





HINT
The purpose of this DTC is to help prevent delivering a vehicle that has incorrectly registered IDs. After all IDs are registered, DTC C2126/26 is detected, and the tire pressure warning light blinks for 1 minute and then comes on. If the tire pressure warning light does not turn off after a little while, IDs may be incorrectly registered.

WIRING DIAGRAM





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 ID NOT RECEIVED

(a) Set the tire pressure to the appropriate 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) Check the values by referring to the table below.

Tire Pressure Monitor





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

(g) Rapidly reduce the tire pressure for each wheel at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds.

(h) Check the Data List.

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 rapidly release the tire pressure and recheck it.
* Record the "ID Tire Inflation Pressure" data transmitter ID that corresponds to each tire.

(i) After confirming that the "ID Tire Inflation Pressure" data for one tire (ID1 to ID4) has changed, repeat this procedure for each tire. Identify the transmitter not received.

Result





B -- END
A -- Continue to next step.

2. CHECK TRANSMITTER ID

HINT
Perform this procedure to compare the registered IDs in the tire pressure warning ECU with the actual tire pressure warning valve and transmitter IDs, as the registered IDs may be incorrect.

(a) Turn the ignition switch OFF.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch ON and turn the Techstream on.

(d) Enter the following menus: Chassis / Tire Pressure Monitor / Data List /

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

Tire Pressure Monitor





(f) Check the ID number on the identified transmitter by removing it from the tire and wheel.





(g) Confirm that the ID number on the transmitter and recorded transmitter ID match.

Result





B -- PERFORM REGISTRATION OF TRANSMITTER ID
A -- Continue to next step.

3. REPLACE TIRE PRESSURE WARNING VALVE AND TRANSMITTER

(a) Replace the tire pressure warning valve and transmitter Removal.

NEXT -- Continue to next step.

4. PERFORM REGISTRATION OF TRANSMITTER ID

(a) Perform registration Registration.

NEXT -- Continue to next step.

5. PERFORM INITIALIZATION

(a) Perform initialization Initialization.

NEXT -- Continue to next step.

6. CONFIRM TIRE INFLATION PRESSURE (DATA LIST) C2121

B -- END
A -- Continue to next step.

7. REPLACE TIRE PRESSURE WARNING ANTENNA AND RECEIVER

(a) Replace the tire pressure warning antenna and receiver Removal.

NEXT -- Continue to next step.

8. CONFIRM TIRE INFLATION PRESSURE (DATA LIST) C2121

B -- END

A -- REPLACE TIRE PRESSURE WARNING ECU Removal