Tire Monitoring System: Service and Repair

TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: REGISTRATION

1. BEFORE REGISTRATION

NOTICE:
The transmitter ID is written on the tire pressure warning valve and transmitter. It is not possible to read the transmitter ID after installing the tire onto the wheel. Therefore, make a note of the transmitter ID before installing the tire.

(a) In case of tire pressure warning ECU replacement:

(1) Read the registered transmitter IDs that are stored in the old ECU using the Techstream and note them down.

(2) If reading the stored transmitter IDs is impossible due to malfunctions of components such as the tire pressure warning antenna and receiver, remove the tires from the wheels and check the IDs located on the tire pressure warning valves and transmitters.

(b) In case of tire pressure warning valve and transmitter replacement:

(1) Make a note of the 7 digit number (transmitter ID) written on the tire pressure warning valve and transmitter.

2. REGISTER TRANSMITTER ID (USING TECHSTREAM)

HINT
* The previously registered IDs are cleared from the memory when the registration is completed.
* If the ID registration step is not completed within 300 seconds, ID registration is canceled.
(a) Set the air pressure of all tires to the specified value(s) Component Tests and General Diagnostics.

(b) Turn the ignition switch off.

(c) Connect the Techstream to the DLC3.

(d) Turn the ignition switch to ON.

(e) Turn the Techstream on.

(f) Enter the following menus: Chassis / Tire Pressure Monitor / Utility / ID Registration.

(g) Perform the procedure displayed on the Techstream.

3. CONFIRMATION OF TRANSMITTER ID REGISTRATION

NOTICE:
* It may take up to approximately 2 or 3 minutes to update the tire pressure data. 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.
* If the IDs have not been registered, DTC C2171/71 is stored in the tire pressure warning ECU after 3 minutes or more.
* If normal pressure values are displayed, the IDs are registered correctly.
* If the tire pressure values are not displayed after a few minutes, the IDs may be incorrect or the system may have a malfunction.
* After all IDs are registered, DTC C2126/26 is stored 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 cleared and the tire pressure warning light goes off.
(a) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

(b) Read the "ID Tire Inflation Pressure" values.

(c) Confirm that the tire pressure data of all tires (except the spare tire) is displayed on the Techstream screen.