Initialization

TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: INITIALIZATION

INITIALIZATION

1. INITIALIZATION
NOTICE:
- Perform initialization after the transmitter ID registration is completed.
- Initialization is necessary after replacing any of the ECU, tires with different tire pressure, or tire pressure warning valve and transmitter, or when a new vehicle is delivered.
- Perform the tire pressure adjustment after the vehicle has sufficiently cooled down. If the vehicle is not sufficiently cooled down, increase the air pressure by 20 to 30 kPa (0.2 to 0.3 kgf/cm2, 2.9 to 4.35 psi) above the specified value.

(a) Set the tire pressure of the 5 wheels to the specified value.
Cold tire inflation pressure:





*1: For driving under 100 mph (160 km/h)
*2: For driving at 100 mph (160 km/h) or more





(b) Keep the tire pressure warning reset switch pressed for 3 seconds or more with the ignition switch ON.

(c) Check that the tire pressure warning light blinks 3 times (1 second ON, 1 second OFF).
(d) Wait for 2 or 3 minutes with the ignition switch ON.
NOTICE:
- The initialization is normally completed within 2 or 3 minutes.
- If the initialization has not been completed successfully, DTC C2177/77 is set approximately 20 minutes after driving starts.
- The initialization can be terminated by making a short circuit between terminals TC and CG of the DLC3 connector.
HINT:
- Initialization will be completed if signals are received from the 5 wheels.

(e) Confirm that the initialization has been completed using the Techstream.
(1) Change the mode to test mode using Techstream and check that test DTCs have been stored.

- The test DTCs will not be indicated until the system initialization is complete.
- After the initialization has been completed successfully, the test DTCs (C2181/81 to C2191/91) are indicated.
NOTICE:
The following operations can be used instead of above procedure:

1 Turn the ignition switch from OFF to ON.
2 Monitor the tire pressure values of all the wheels using the Techstream.
3 If the tire pressure values cannot be displayed on the Techstream screen, the initialization has failed.
4 It takes 2 to 3 minutes to display the tire pressure data.
HINT:
- In winter, as the tire pressure may decrease depending on the ambient temperature, increase the tire pressure by 20 kPa (0.3 kgf/cm2, 4.3 psi) above the specified value after confirmation that the initialization has been completed.