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Using Intelligent Tester

NOTE: The system will need to be initialized when tires are replaced with tires of different pressures, tire pressure sensor and/or tire pressure monitor ECU are replaced. Set tire pressure within the specified range before initializing. When a tire pressure sensor and/or tire pressure monitor ECU are replaced, the sensor ID must be memorized by the tire pressure monitor ECU prior to system initialization. See Tire Pressure Sensor Registration. 

Initializing Tire Pressure Monitor System 

CAUTION: When initializing the system, the present tire conditions are stored as a standard. Therefore, set tire pressures within the specified range before initializing. Perform the tire pressure adjustment after the vehicle has sufficiently cooled down. If it hasn't sufficiently cooled, increase the air pressure in the tires approximately 3-4psi (20-30kPa). DO NOT push the reset switch without adjusting tire inflation pressure of all 4 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: The initialization mode can be terminated by making a short circuit between terminals No. 4 and 13 of the DLC3 connector.
NOTE: The initialization process is canceled if the ignition switch is turned to OFF position prior to the completion of initialization. To restart initialization, the tire pressure warning reset switch must be pressed again.
  1. Set the tire pressure of all wheels to pressure specified on the tire and loading information label.
  2. With the vehicle parked in a safe place, connect the Intelligent Tester to the DLC3 and turn ignition switch to the ON position.
  3. Turn the Intelligent Tester ON and navigate to the "TIREPRESS" option using the on-screen prompts.
  4. Within 30 seconds of turning the ignition ON, press and hold the tire pressure warning reset switch (see Figure or Figure) until the tire pressure warning light blinks 3 times at one-second intervals.
  5. Wait 2-3 minutes, with the ignition ON, for the initialization process to complete. If the initialization has not been completed successfully, Diagnostic Trouble Code (DTC) C2177/77 is set in the tire pressure monitor ECU about 20 minutes after driving starts.
  6. Confirm that initialization is complete by verifying that the correct tire pressure values are displayed on the intelligent tester.
    NOTE: In winter, tire pressure may decrease due to low ambient temperatures - about 1.45 psi (10 kPa) for every 18°F (10°C) drop in ambient temperature. Therefore, the tire pressure warning is more likely to operate if the tire pressures are not adjusted appropriately. If the daily temperature variation is large, pressurize the tires so that they are in the specified range under cold conditions. With this adjustment, unnecessary warnings are less likely.

Tire Pressure Sensor Registration 

NOTE: When a tire, wheel, tire pressuresensor, or TPMS ECU are replaced, the sensor ID needs to be registered in the ECU.
  1. Set the pressure of all tires to the pressure specified on the tire and loading information label.
  2. Connect the Intelligent Tester to DLC3.
  3. Turn the ignition switch to the ON position.
  4. Enter the following menus: Chassis / Tire Pressure Monitor / Utility / ID Registration.
  5. Perform the procedure displayed on the Intelligent Tester.
NOTE: If procedure is not completed within 5 minutes, the mode will return to the normal operation mode.

Confirmation Of Transmitter ID Registration 

  1. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
  2. Read the "ID Tire Inflation Pressure" values.
  3. Confirm that the tire pressure data of all tires (except spare tire) is displayed on the Intelligent Tester screen.
NOTE: It may take up to a few 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. If the IDs have not been registered, DTC C2171/71 is stored in the tire pressure warning ECU after 3 minutes or more. 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.
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