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Repair Instruction: Initialization: Initialization

  1. PROCEDURES NECESSARY WHEN BATTERY TERMINAL IS DISCONNECTED/RECONNECTED 
    NOTE:

    It may not be possible to release the steering lock or start the engine when the battery voltage is low. If this occurs, initialization of the steering lock system is required. Refer to INITIALIZATION

  2. PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED 
    Replacement Part Necessary Procedure Effect / Inoperative Function when Necessary Procedures are not Performed See
    ECM Vehicle Identification Number (VIN) registration MIL comes on Refer to REGISTRATION for 2AZ-FE
    Refer to REGISTRATION for 2ZR-FE
    ECU communication ID registration Engine start Refer to REGISTRATION *1
    Refer to REGISTRATION *2
    • Automatic transaxle assembly*3
    • Engine assembly*3
    • ECM*3
    		 Reset memory
    • Large shift shock
    • The deterioration of fuel efficiency
    		 Refer to INITIALIZATION for U341E
    Refer to INITIALIZATION for U250E
    Tire pressure warning ECU
    1. Register transmitter IDs
    2. Initialize tire pressure warning system
    • When DTC detection conditions of "transmitter ID not received" DTC are met, TPWS indicator blinks for 1 minute, and then illuminates.
    • Tire pressure monitoring function
    		 Refer to INITIALIZATION for initialization
    Refer to REGISTRATION for registration
    Tire pressure warning valve and transmitter
    1. Register transmitter IDs
    2. Initialize tire pressure warning system
    1. When DTC detection conditions of "transmitter ID not received" DTC are met, TPWS indicator blinks for 1 minute, and then illuminates.
    2. Tire pressure monitoring function of replaced wheel
    Brake actuator assembly (Skid control ECU) Perform yaw rate and acceleration sensor zero point calibration
    • Slip indicator light comes on
    • VSC disabled or malfunctioning
    		 Refer to CALIBRATION
    Yaw rate and acceleration sensor
    1. Clear zero point calibration data
    2. Perform yaw rate and acceleration sensor zero point calibration
    • Slip indicator light comes on
    • VSC disabled or malfunctioning
    • Power steering ECU*4
    • Steering column*4
    		 Perform rotation angle sensor initialization and torque sensor zero point calibration
    • P/S warning light comes on
    • EPS control
    		 Refer to CALIBRATION
    Power steering ECU*5
    1. Assist map writing
    2. Torque sensor zero point calibration
    • P/S warning light comes on
    • EPS control
    		 Refer to CALIBRATION
    Steering column*5 Torque sensor zero point calibration Steering effort is different between turning steering wheel to left and right
    • Door control transmitter*2
    • Door control receiver*2
    1. Perform identification code registration (key code)
    2. Refer to wireless door lock control system "REGISTRATION" procedures
    		 Wireless door lock control system Refer to REGISTRATION
    Transponder key ECU*2
    1. Key code registration
    2. ECU communication ID registration
    		 Engine start Refer to REGISTRATION
    key*2 Key code registration Engine start
    Steering lock actuator (Steering lock ECU)*1 ECU code registration Engine start Refer to REGISTRATION
    • Certification ECU*1
    • Electrical key transmitter*1
    		 Key ID registration
    • Wireless door lock control system
    • Smart key system
    • Engine start
    ID code box*1
    1. ECU code registration
    2. ECU communication ID registration
    		 Engine start
    Occupant classification ECU
    • Perform zero point calibration
    • Perform sensitivity check
    • Registration ECU data
    • Occupant classification system
    • Passenger airbag ON/OFF indicator
    • Airbag system (Front passenger side)
    • Seat belt warning system (Front passenger side)
    		 Refer to INITIALIZATION for initialization
    Refer to REGISTRATION for registration
    Front seat cushion assembly (w/ occupant classification ECU, occupant classification sensor)
    • Perform zero point calibration
    • Perform sensitivity check
    • Occupant classification system
    • Passenger airbag ON/OFF indicator
    • Airbag system (Front passenger side)
    • Seat belt warning system (Front passenger side)
    • Sliding roof drive gear (Sliding roof ECU)
    • Sliding roof housing
    • Sliding roof drive cable
    		 Perform sliding roof drive gear reset
    • Automatic open/close function of roof glass
    • Jam protection function
    • Operation function after ignition switch off
    		 Refer to INITIALIZATION
    • *1: w/ Smart Key System
    • *2: w/o Smart Key System
    • *3: for U341E, U250E Automatic Transaxle
    • *4: for 2AZ-FE
    • *5: for 2ZR-FE
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