TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM (for Gasoline Model (for Type A)): REGISTRATION; 2020 - 2023 MY Corolla Corolla Hatchback GR Corolla [09/2019

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM100000001KX4I
Model Year Start: 2020	Model: GR Corolla	Prod Date Range: [09/2019 - 11/2022]
Title: TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM (for Gasoline Model (for Type A)): REGISTRATION; 2020 - 2023 MY Corolla Corolla Hatchback GR Corolla [09/2019 - 11/2022]

REGISTRATION

PROCEDURE

1. BEFORE REGISTRATION

NOTICE:

The transmitter ID is written on the tire pressure warning valve and transmitter. It is not possible to read the transmitter ID after installing the tire onto the wheel. Therefore, make a note of the transmitter ID before installing the tire.
Make sure to perform ID registration using the Techstream after replacing the tire pressure warning ECU and receiver.

(a) When replacing the tire pressure warning ECU and receiver:

(1) When replacing the tire pressure warning ECU and receiver, read the transmitter IDs and number of the transmitters (4 or 5) stored in the old ECU using the Techstream and write them down before removal.

(2) If reading the stored transmitter IDs is impossible due to malfunctions of components such as the tire pressure warning ECU and receiver, remove the tires from the wheels and check the IDs located on the tire pressure warning valve and transmitters.

(b) When replacing a tire pressure warning valve and transmitter:

(1) Take a note of the 7-digit number (transmitter ID) written on the tire pressure warning valve and transmitter.

*A	for Type A	*B	for Type B
*1	Tire Pressure Warning Valve and Transmitter	-	-
*a	Transmitter ID (7-digit Number)	-	-

2. REGISTER TRANSMITTER ID (USING TECHSTREAM)

ID Switching Function:

Before performing ID registration for the 2nd tire set, make sure that ID registration has been completed for the main tire set.
If ID registration for the main tire set has not been completed, it is not possible to perform ID registration for the 2nd tire set.
When performing ID registration for the 2nd tire set, make sure that both the main tire set and 2nd tire set are close to the vehicle (within 10 m (32.8 ft.)).
HINT:

If the main tire set is not close to the vehicle (within 10 m (32.8 ft.)) when ID registration is performed for the 2nd tire set, DTC C2126 will be stored.
Make sure to install the appropriate tire set before performing ID switching.

HINT:

The previously registered IDs will be cleared from memory when registration is completed.
If the ID registration step is not completed within 300 seconds, ID registration will be canceled.
ID Switching Function:
When performing ID registration for the 2nd tire set, select "2nd Set" on the Techstream.

(a) Set the tire pressure to the specified value.

Click here

(b) Turn the ignition switch off.

(d) Turn the ignition switch to ON.

(e) Turn the Techstream on.

(f) Enter the following menus: Chassis / Tire Pressure Monitor / Utility / ID Registration/Tire Number Registration.

Chassis > Tire Pressure Monitor > Utility

Tester Display
ID Registration/Tire Number Registration

(g) Perform the procedure displayed on the Techstream.

HINT:

The number of registered tire pressure warning valve and transmitters can only be set to 4 when the value is currently set to 5. The number of registered tire pressure warning valve and transmitters should only be changed from the default value when requested by the customer.

3. CONFIRMATION OF TRANSMITTER ID REGISTRATION (USING TECHSTREAM)

NOTICE:

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.
Click here
If the transmitter IDs have not been registered, DTC C2171 is stored in the tire pressure warning ECU and receiver after 3 minutes or more.
If normal pressure values are displayed, the transmitter IDs have been registered correctly.
If the tire pressure values are not displayed after a few minutes, the transmitter IDs may be incorrect or the system may have a malfunction.
After all transmitter IDs are registered, DTC C2126 is stored in the tire pressure warning ECU and receiver and the tire pressure warning light blinks for 1 minute and then illuminates. When the tire pressure warning ECU and receiver successfully receives signals from all the transmitters whose IDs are stored in the ECU, DTC C2126 is cleared and the tire pressure warning light goes off.

(a) When checking the ID registration for the 2nd tire set (ID Switching Function):

Operate the steering pad switch assembly and switch the IDs to the 2nd set of tires.

(b) 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

HINT:

*1: 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.

Chassis > Tire Pressure Monitor > Data List

Tester Display
ID 1 Tire Inflation Pressure
ID 2 Tire Inflation Pressure
ID 3 Tire Inflation Pressure
ID 4 Tire Inflation Pressure

(c) Reduce the tire inflation pressure of each tire 40 kPa (0.4 kgf/cm², 5.8 psi) or more, and check that the "ID Tire Inflation Pressure" data is updated and that the actual tire inflation pressures are displayed.

(d) After confirming that all of the tire inflation pressure values (except the compact spare tire) have been updated, adjust the tire inflation pressure to the specified value, operate the steering pad switch assembly and perform initialization.

4. METHOD TO SWITCH ID (ID Switching Function)

(a) Perform ID switching:

NOTICE:

When the tire pressure warning system is malfunctioning, be sure to perform troubleshooting for the system before performing ID switching.
It is not possible to perform the ID switching function while the system is being checked or during Test Mode.

(1) Install the appropriate tire set to the vehicle.

(2) Turn the ignition switch to ON.

(3) Select "Change Wheel" 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.

HINT:

The tire pressure warning light will illuminate for 3 seconds and turn off for 0.5 seconds 3 times.

(b) ID switching function check:

NOTICE:

It may take up to a few minutes to update the tire pressure data.
When the tire pressure warning ECU and receiver successfully receives signals from all the transmitters whose IDs are stored in the ECU, ID switching is complete.
After ID switching is performed, DTC C2126 is stored in the tire pressure warning ECU and receiver and the tire pressure warning light blinks for 1 minute and then comes on. When the tire pressure warning ECU and receiver successfully receives signals from all the transmitters whose IDs are stored in the ECU, DTC C2126 is cleared and the tire pressure warning light goes off.

(1) Connect the Techstream to the DLC3.

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

(3) Reduce the tire inflation pressure of each tire 40 kPa (0.4 kgf/cm², 5.8 psi) or more, and check that the "ID Tire Inflation Pressure" data is updated and that the actual tire inflation pressures are displayed.

(4) After confirming that all of the tire inflation pressure values (except the compact spare tire) have been updated, adjust the tire inflation pressure to the specified value, operate the steering pad switch assembly and perform initialization.