Initialization

TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: INITIALIZATION

INITIALIZATION

1. DESCRIPTION OF INITIALIZATION
(a) 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 the tire.

HINT: *: Perform initialization after the transmitter ID registration is completed (Registration).

(b) Before initialization
(1) Set the all tire pressures to the specified value (Service Precautions).
2. INITIALIZATION PROCEDURE
(a) Turn the ignition switch to the LOCK position.
(b) Connect Techstream to the DLC3.
(c) Turn the ignition switch to the ON position and turn the tester on.
(d) Confirm that the tire pressure data of all tires are displayed on the tester screen (Scan Tool Testing and Procedures).
(e) Press and hold the tire pressure warning reset switch for 3 seconds or more so that the tire pressure warning light blinks 3 times.





(f) Turn the ignition switch to the LOCK position.
(g) Turn the ignition switch to the ON position and turn the tester on.
(h) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(i) Check that the initialization has been completed.
(j) Confirm that the tire pressure data of all tires are displayed on the tester screen.

NOTICE:
- The initialization is normally completed within 2 to 3 minutes. If the values are not displayed after a few minutes, rotate the tires 90° to 270° and check the tire pressure data of all tires. If the values are still not displayed on the tester, perform troubleshooting according to the inspection procedure for DTCs C2121 to C2124 (Tire Pressure Monitoring).
- If the initialization has not been completed successfully, DTC C2177/77 will be set after the vehicle is driven for 20 minutes or more.
- The initialization can be canceled by connecting terminals TC and CG of the DLC3.





HINT:
- If the tire pressure values are not properly displayed (example: showing -14 psi, -100 kPa, etc), the data from the transmitter has not been received.
- Initialization will be competed if signals are received from all the wheels.

Tire Pressure Monitor





(k) Adjust tire pressure to the specified level (Service Precautions).

HINT:
- If there is a great difference between the current temperature of the tire and wheel (example : shop temperature) and excepted temperature (outdoor temperature), this needs to be considered when adjusting the tire pressure.
- Adjust tire pressure when the tires are cold.