Initialization [12/2019 - 11/2023]

NOTE:

Initialization can be confirmed through the tire pressure warning light.
If the ignition switch is turned off during initialization, the tire pressure warning ECU and receiver memorizes that initialization was being performed. Therefore, it is not necessary to perform the initialization procedure again after turning the ignition switch to ON.
The order in which the data is received is random.
If the signals from all the tire pressure warning valve and transmitters are received, initialization is completed.
Initialization is completed when the Data List "ID Tire Inflation Pressure" display shows the correct pressures.
Refer to DATA LIST / ACTIVE TEST [12/2019 - 10/2022] , or refer to DATA LIST / ACTIVE TEST [10/2022 - 11/2023]
Initialization is normally completed within a few minutes.
However, it may take 10 minutes or more until the tire pressure of the tire inflation pressure display function is shown (Tire Inflation Pressure Display Function).
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 to C2124 (C2125: w/ Full Size Spare Tire).
Refer to DTC C2121: Transmitter ID 1 not Received (Main); DTC C2122: Transmitter ID 2 not Received (Main); DTC C2123: Transmitter ID 3 not Received (Main); DTC C2124: Transmitter ID 4 not Received (Main); DTC C2125: Transmitter ID 5 not Received (Main); DTC C2181: Transmitter ID 1 not Received (for Test Diagnosis); DTC C2182: Transmitter ID 2 not Received (for Test Diagnosis); DTC C2183: Transmitter ID 3 not Received (for Test Diagnosis); DTC C2184: Transmitter ID 4 not Received (for Test Diagnosis); DTC C2185: Transmitter ID 5 not Received (for Test Diagnosis) [12/2019 - 11/2023]
If initialization has not been completed successfully, DTC C2177 is stored after a vehicle speed of 40 km/h (25 mph) or more is detected for 20 minutes or more.
During test mode (sensor check mode), the system will not change to initialization mode even if the initialization procedure is performed.
If initialization is performed, the existing tire positions will be cleared, but will be automatically identified when the vehicle is driven at 40 km/h (25 mph) or more for 10 to 30 minutes (Tire Inflation Pressure Display Function).

BEFORE INITIALIZATION
1. Set the tire pressure to the specified value.
  NOTE:
  Refer to the link as the procedure for adjusting the tire pressures differs depending on the temperature of the tires.
  
  Refer to INSPECTION [12/2019 - ]

INITIALIZATION PROCEDURE

HINT:

The tire pressure warning system illuminates the tire pressure warning light to warn the driver when the following condition is met:

The tire pressure drops to approximately 75% or less of the tire pressure set when system initialization was performed using the steering pad switch assembly.

Turn the ignition switch to ON.

Select "Set Pressure" on the multi-information display and press and hold the "OK" switch (steering pad switch assembly) until the tire pressure warning light blinks 3 times.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	Tire Pressure Warning Light
*2	"OK" Switch (Steering Pad Switch Assembly)
*a	Tire Pressure Warning Light Output Pattern
*b	1 sec.
*c	ON
*d	OFF

Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.

Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

Chassis > Tire Pressure Monitor > Data List

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
ID 1 Tire Inflation Pressure	ID1 tire inflation pressure	min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm² , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm² , 0 psi) max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm² , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm² , 55 psi)	Actual tire inflation pressure	If N/A is displayed, data has not been received.*1
ID 2 Tire Inflation Pressure	ID2 tire inflation pressure	min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm² , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm² , 0 psi) max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm² , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm² , 55 psi)	Actual tire inflation pressure	If N/A is displayed, data has not been received.*1
ID 3 Tire Inflation Pressure	ID3 tire inflation pressure	min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm² , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm² , 0 psi) max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm² , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm² , 55 psi)	Actual tire inflation pressure	If N/A is displayed, data has not been received.*1
ID 4 Tire Inflation Pressure	ID4 tire inflation pressure	min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm² , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm² , 0 psi) max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm² , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm² , 55 psi)	Actual tire inflation pressure	If N/A is displayed, data has not been received.*1
ID 5 Tire Inflation Pressure	ID5 tire inflation pressure	min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm² , 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm² , 0 psi) max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm² , 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/cm² , 55 psi)	Actual tire inflation pressure	If N/A is displayed, data has not been received.1 2

HINT:

*1: It may take a few minutes until the values are displayed.
*2: w/ Full Size Spare Tire
The wheel position cannot be determined from ID1 through ID5 on the Data List.

Check that initialization has been completed.
Confirm that the tire pressure data of all tires is displayed on the GTS screen.