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 a tire pressure warning valve and transmitter.*
  - Specified tire pressure changes depending on the size or type of tire.
  - When changing the tire inflation pressure by changing traveling speed or load weight, etc.
  HINT:
  
  *: Perform initialization after the transmitter ID registration is completed.
2. Before initialization
  1. Set the tire pressures of all tires to the specified values.
  NOTE:
  Make sure the tires are cooled down.

INITIALIZATION PROCEDURE

Turn the power switch on (IG).
Press 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: Identifying Tire Pressure Warning Light And Reset Switch
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Turn the power switch off.
Connect the Techstream to the DLC3.
Turn the power switch on (IG) and the Techstream on.
Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
Check that the initialization has been completed.

Confirm that the tire pressure data of all tires is displayed on the Techstream screen.

NOTE:

The initialization is normally completed within 2 to 3 minutes.
If the initialization has not been completed successfully, DTC C2177/77 is set after a vehicle speed of 8 km/h (5 mph) or more continues for 20 minutes or more.
While in test mode, the system will not change to initialization mode even if the tire pressure warning reset switch is pushed.
The initialization can be terminated by connecting terminals 13 (TC) and 4 (CG) of the DLC3.

Fig 2: Identifying DLC3 Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TIRE PRESSURE MONITOR

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 kgf/cm² , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm² , 92 psi), Relative pressure / 537.5 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 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 kgf/cm² , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm² , 92 psi), Relative pressure / 537.5 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 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 kgf/cm² , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm² , 92 psi), Relative pressure / 537.5 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 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 kgf/cm² , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm² , 92 psi), Relative pressure / 537.5 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 kgf/cm² , -14 psi) is displayed for relative pressure, data has not been received.*
ID5 Tire Inflation Pressure	ID5 tire inflation pressure/ min.: Absolute pressure / 0 kPa (0 kgf/cm² , 0 psi), Relative pressure / -100 kPa (-1 kgf/cm² , -14 psi) max.: Absolute pressure / 637.5 kPa (6.5 kgf/cm² , 92 psi), Relative pressure / 537.5 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 kgf/cm² , -14 psi) is displayed for relative pressure, data has not been received.*

HINT:

The initialization is complete when the Data List "ID Tire Inflation 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 C2125/25.

INITIALIZATION PROCEDURE (MULTI-INFORMATION DISPLAY)
1. Turn the power switch on (IG).
2. Press and hold the tire pressure warning reset switch for 3 seconds or more so that the tire pressure warning light blinks 3 times.
  
  Fig 3: Identifying Tire Pressure Warning Light And Reset Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  HINT:
  - The initialization can be confirmed through the multi-information display.
    
    Fig 4: Identifying Multi-Information Display Screen Flow
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  - The order in which the data is received is random.
  - If the signals from all the wheels are received, the initialization is complete.
  - 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 C2125/25.
  NOTE:
  - If the initialization has not been completed successfully, DTC C2177/77 is set after a vehicle speed of 8 km/h (5 mph) or more continues for 20 minutes or more.
  - The initialization can be terminated by connecting terminals 13 (TC) and 4 (CG) of the DLC3.
    
    Fig 5: Identifying DLC3 Connector Terminals
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002