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Repair Instruction: Initialization: Initialization

  1. 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
    • Automatic transaxle assembly*
    • Engine assembly*
    • ECM*
    Reset memory
    • Large shift shock
    • The deterioration of fuel efficiency
    Refer to INITIALIZATION for U140F
    Refer to INITIALIZATION for U250E
    Refer to INITIALIZATION for U341E
    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
    • 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 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 for 2AZ-FE
    Refer to CALIBRATION for 2ZR-FE
    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
    • Power steering link assembly
    Perform rotation angle sensor initialization and torque sensor zero point calibration
    • P/S warning light comes on
    • EPS control
    Refer to CALIBRATION
    Transponder key ECU
    1. Key code registration
    2. ECU communication ID registration
    Engine start Refer to REGISTRATION
    Key Key code registration Engine start
    • Door control transmitter
    • Door control receiver
    Refer to wireless door lock control system "REGISTRATION" procedures Wireless door lock control system Refer to REGISTRATION
    Front seat cushion assembly (w/ occupant classification ECU, occupant classification sensor)
    • Perform zero point calibration
    • Sensitivity check
    • Occupant classification system
    • Passenger airbag ON/OFF indicator
    • Airbag system (Front passenger side)
    • Seat belt warning system (Front passenger side)
    Refer to INITIALIZATION
    • Sliding roof drive gear sub-assembly (Sliding roof ECU)
    • Sliding roof housing
    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
    • *: for U140F, U250E, U341E Automatic Transaxle