Up to 08/2009

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

DESCRIPTION

If the tire pressure warning ECU does not receive radio waves from the transmitters 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 remains 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 will be deleted and the tire pressure warning light will go off.





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

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
- When replacing the tire pressure warning ECU, read the transmitter IDs stored in the old ECU using 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 if the ECU and/or any of the valve and transmitters have been replaced.
PROCEDURE

1. IDENTIFY TRANSMITTER NOT RECEIVED

(a) Set the tire pressure to the appropriate specified values Component Tests and General Diagnostics.

(b) Turn the engine switch off.

(c) Connect Techstream to the DLC3.

(d) Turn the engine switch on (IG) and turn the tester 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 by 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 the "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 the data.
- 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 engine switch off.

(b) Connect Techstream to the DLC3.

(c) Turn the engine switch on (IG) and turn the tester 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 -- 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 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)

(a) Turn the engine switch off.

(b) Connect Techstream to the DLC3.

(c) Turn the engine switch on (IG) and turn the tester 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





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

Result:





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)

(a) Turn the engine switch off.

(b) Connect Techstream to the DLC3.

(c) Turn the engine switch on (IG) and turn the tester 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





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

Result:





B -- REPLACE TIRE PRESSURE WARNING ECU

A -- END