Initializing Tire Pressure Monitor System
NOTE:
The system will need to be initialized when tires are rotated; tires are replaced with tires of different pressures; tire pressure sensor and/or tire pressure warning ECU are replaced. If tire pressure sensor and/or tire pressure warning ECU were replaced, ensure that tire pressure sensor IDs are registered PRIOR TO initialization. See TIRE PRESSURE SENSOR REGISTRATION .
CAUTION:
DO NOT operate the reset switch without adjusting tire inflation pressure of all tires. Otherwise, the low tire pressure warning light may not come on even if the tire pressure is low, or it may come on when the tire inflation pressure is actually normal. If you push the reset switch while the vehicle is moving, initialization is not performed.
NOTE:
When initializing the system, the present tire condition is stored as a standard.
During initialization, the tire pressure sensor measures the inflation pressure of the tires, and registers the signals that are transmitted into the tire pressure warning ECU at a frequency of one per minute. The initialization process is completed when the signals from all tires have been received.
The initialization process is canceled if the ignition switch is turned to OFF position during initialization. To initialize again, the tire pressure warning reset switch must be pressed again.
NOTE:
The initialization can be terminated by connecting terminals 13 (TC) and 4 (CG) of the DLC3. See Fig 1.
- Set the tire pressure of all wheels to pressure specified on the tire and loading information label.
- Turn the ignition switch to the ON position.
- Using the steering pad switch assembly, select "TPMS" on the multi-information display and press and hold the "ENTER" switch (steering pad switch assembly) until the tire pressure warning light blinks 3 times. See Fig 2.
- Turn the ignition switch off.
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON and turn the Techstream on.
- Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
- Check that initialization has been completed.
- Confirm that the tire pressure data of all tires is displayed on the Techstream screen.
NOTE:
It may take a few 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 (C2125/25: w/ Full Size Spare Tire).