Initialization
INITIALIZATION1. DESCRIPTION OF INITIALIZATION
(a) Perform initialization in the following cases:
^ Before delivery of a new vehicle.*
^ After replacement of the tire pressure ECU.
^ After replacement of the tire pressure warning valve and transmitter.
^ Specified tire pressure changes depending on the size or type of the tire.
*: Perform initialization after the transmitter ID registration is completed.
(b) Before initialization
(1) Set the air pressure of all wheels, including the full-size spare tire, to the specified value.
Cold tire inflation pressure:
NOTICE: 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 4.3 psi) above the specified value.
2. INITIALIZATION PROCEDURE
(a) Keep the tire pressure warning reset switch pressed for 3 seconds or more with the engine switch on (IG).
(b) Check that the tire pressure warning light blinks 3 times (1 second ON, 1 second OFF).
HINT: Initialization will be completed if signals are received from all the wheels.
DLC3:
(c) Wait for 2 or 3 minutes with the engine switch on (IG).
NOTICE:
^ The initialization is normally completed within 2 to 3 minutes.
^ If the initialization has not been completed successfully, DTC C2177/77 is set approximately 20 minutes.
^ The initialization can be terminated by making a short circuit between terminals TC and CG of the DLC3 connector.
(d) Confirm that the initialization has been completed using the intelligent tester.
(1) Change the mode to test mode using intelligent tester and check that tire pressure warning light tire pressure warning light blinks at 0.125 second intervals.
HINT: Tire pressure warning light will not blink until the system initialization is complete.
NOTICE: The following operations can be used instead of above procedure
1. Turn the engine switch from off to on (IG).
2. Monitor the tire pressure values of all the wheels using the intelligent tester.
3. If the tire pressure values cannot be displayed on the intelligent tester 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 to 30 kPa (0.2 to 0.3 kgf/cm2, 2.9 to 4.3 psi) above the specified value after confirming that the initialization has been completed.