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 radio waves 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
If the IDs stored in the tire pressure warning ECU differ from the transmitter IDs, DTC C2126/26 is set. Check that the IDs in the ECU are the same as the transmitter IDs.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
It is necessary to register the transmitter IDs after replacing a tire pressure warning valve and transmitter and/or the tire pressure warning ECU Programming and Relearning.

PROCEDURE

1. IDENTIFY TRANSMITTER 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.

(e) Turn the Techstream on.

(f) Check the values by referring to the table below. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

Tire Pressure Monitor:





HINT
*1: 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 no "ID Tire Inflation Pressure" data has 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 ID5) has changed, repeat this procedure one by one. Identify the transmitter not received.

Result:





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

2. CHECK TRANSMITTER ID

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch ON.

(d) Turn the Techstream on.

(e) Check the values by referring to the table below. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

Tire Pressure Monitor:





HINT
*: Displayed only when the ID No. is not registered.

(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 -- 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. REGISTRATION OF TRANSMITTER ID

(a) Perform registration Programming and Relearning.

NEXT -- Continue to next step.

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 ON.

(d) Turn the Techstream on.

(e) Check the values by referring to the table below. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

Tire Pressure Monitor:





HINT
* *1: It may take about 2 or 3 minutes until the values are displayed.
* When no "ID Tire Inflation Pressure" data has 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.

Result:





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

6. REPLACE TIRE PRESSURE WARNING ANTENNA AND RECEIVER

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

NEXT -- Continue to next step.

7. CONFIRM TIRE INFLATION PRESSURE (DATA LIST)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch ON.

(d) Turn the Techstream on.

(e) Check the values by referring to the table below. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

Tire Pressure Monitor:





HINT
* *1: It may take about 2 or 3 minutes until the values are displayed.
* When no "ID Tire Inflation Pressure" data has 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.

Result:





B -- REPLACE TIRE PRESSURE WARNING ECU Removal

A -- END