Tire Pressure Warning System: Initialization

DESCRIPTION OF INITIALIZATION
1. Perform initialization in the following cases:
  - Before delivery of a new vehicle.
  - After replacement of the tire pressure warning ECU*.
  - After replacement of any of the tire pressure warning valve and transmitters*.
  *: Perform initialization after the transmitter ID registration is completed (See REGISTRATION ).
2. Before initialization
  1. Set the all tire pressure to the specified value (See TIRE PRESSURE WARNING SYSTEM ).
    NOTE: Make sure the tires are cooled down.
INITIALIZATION PROCEDURE
1. Adjust all tire (except spare tire) to the standard tire inflation pressure, as indicated on the tire and loading information label on the vehicle.
2. Turn the ignition switch to ON.
3. Push and hold the tire pressure warning reset switch for 3 seconds or more so that the tire pressure warning light blinks 3 times.
  
  Fig 1: Tire Pressure Warning Light Output Pattern
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Turn the ignition switch off.
5. Connect the Techstream to the DLC3.
6. Turn the ignition switch to ON.
7. Turn the Techstream on.
8. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
9. Check that the initialization has been completed.
10. Confirm that the tire pressure data of all wheels are displayed on the Techstream.
  NOTE:
  - The initialization is normally completed within 2 or 3 minutes.
  - If the initialization has not been completed successfully, DTC C2177/77 is set after a vehicle speed 8 km/h (5 mph) or more continues for 20 minutes or more.
  - The initialization can be terminated by connecting terminals TC and CG of the DLC3.
Fig 2: Identifying DLC3 Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Tire Pressure Monitor

ITEM RANGE REFERENCE

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
ID1 Tire Inflation Pressure	ID1 tire inflation pressure/ min.: Absolute pressure / 0 kPa (0 kgf/cm² , 0 psi), Relative pressure / -100 kPa (-1.0 kgf/cm² , -14 psi) max.: Absolute pressure / 638 kPa (6.4 kgf/cm² , 93 psi), Relative pressure / 538 kPa (5.4 kgf/cm² , 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm² , 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm² , -14 psi) is displayed for relative pressure, data has not been received.*
ID2 Tire Inflation Pressure	ID2 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm² , 0 psi), Relative pressure / -100 kPa (-1.0 kgf/cm² , -14 psi) max.: Absolute pressure / 638 kPa (6.4 kgf/cm² , 93 psi), Relative pressure / 538 kPa (5.4 kgf/cm² , 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm² , 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm² , -14 psi) is displayed for relative pressure, data has not been received.*
ID3 Tire Inflation Pressure	ID3 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm² , 0 psi), Relative pressure / -100 kPa (-1.0 kgf/cm² , -14 psi) max.: Absolute pressure / 638 kPa (6.4 kgf/cm² , 93 psi), Relative pressure / 538 kPa (5.4 kgf/cm² , 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm² , 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm² , -14 psi) is displayed for relative pressure, data has not been received.*
ID4 Tire Inflation Pressure	ID4 tire inflation pressure / min.: Absolute pressure / 0 kPa (0 kgf/cm² , 0 psi), Relative pressure / -100 kPa (-1.0 kgf/cm² , -14 psi) max.: Absolute pressure / 638 kPa (6.4 kgf/cm² , 93 psi), Relative pressure / 538 kPa (5.4 kgf/cm² , 78 psi)	Actual tire inflation pressure	If 0 kPa (0 kgf/cm² , 0 psi) is displayed for absolute pressure or -100 kPa (-1.0 kgf/cm² , -14 psi) is displayed for relative pressure, data has not been received.*

HINT:

The initialization is completed when the "ID Tire Information Pressure" display shows the correct pressures.
*: It may take about 2 or 3 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 (See DTC C2121/21 NO SIGNAL FROM TRANSMITTER ID1; DTC C2122/22 NO SIGNAL FROM TRANSMITTER ID2; DTC C2123/23 NO SIGNAL FROM TRANSMITTER ID3; DTC C2124/24 NO SIGNAL FROM TRANSMITTER ID4; DTC C2181/81 TRANSMITTER ID1 NOT RECEIVED (TEST MODE DTC); DTC C2182/82 TRANSMITTER ID2 NOT RECEIVED (TEST MODE DTC); DTC C2183/83 TRANSMITTER ID3 NOT RECEIVED (TEST MODE DTC); DTC C2184/84 TRANSMITTER ID4 NOT RECEIVED (TEST MODE DTC) ).