WHEN REMOVING,INSTALLING,REPAIRING OR REPLACING PARTS PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED

Refer to the TOYOTA Repair Manual for each work procedure.

  1. PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED

    Replacement Part

    Necessary Procedure

    Effect/Inoperative Function when Necessary Procedures are not Performed

    Note

    ECM

    ECU communication ID (Immobiliser system)

    Engine start function, etc.

    See the Service Bulletin for the registration method.

    Perform electronic throttle learning

    Poor idle, etc.

    -

    Throttle with motor body assembly replacement

    Perform electronic throttle learning

    Engine stop and start ECU*1

    1. Upload the number of starter operations

    2. Reset air conditioning information

    3. Learning of air conditioning information

    4. Clear the zero point calibration data

    5. Perform zero point calibration of the deceleration sensor

    Stop and start system

    -

    Air conditioning control assembly*1

    1. Reset air conditioning information

    2. Learning of air conditioning information

    Starter assembly*1

    Clear the number of starter operations

    Airbag sensor assembly*1

    1. Clear the zero point calibration data

    2. Perform zero point calibration of the deceleration sensor

    • Transaxle assembly

    • Transaxle parts (inside gear box)

    • Shift and select actuator (with clutch actuator)

    1. Clamp position adjustment*7

    2. Initialization and learning of multi-mode manual transaxle system

    3. Synchronization position calibration

    Multi-mode manual transaxle system

    -

    • Clutch actuator*9

    • Clutch stroke sensor

    • Clutch disc and clutch cover

    • Clutch release bearing

    • Clutch release fork

    • Clutch release lever

    • Flywheel

    • Crankshaft

    1. Clamp position adjustment*7

    2. Initialization and learning of multi-mode manual transaxle system

    • Shift stroke sensor

    • Select stroke sensor

    1. Initialization and learning of multi-mode manual transaxle system

    2. Synchronization position calibration

    TCM

    1. Read learning value*8

      (Read the learning value from the previous TCM)

    2. Initialization and learning of multi-mode manual transaxle system

    3. Synchronization position calibration

    Skid control ECU (brake actuator assembly)*2

    Initialization

    • Tire pressure warning light indicator blinks

    • Tire pressure warning function

    -

    Skid control ECU (brake actuator assembly)*3

    Perform system variant learning and acceleration sensor zero point calibration

    • VSC disabled or malfunctioning

    • DTCs are output

    • Slip indicator light illuminates

    • ABS warning light illuminates

    -

    Yaw rate and acceleration sensor (airbag sensor assembly)

    1. Clear zero point calibration data

    2. Perform system variant learning and acceleration sensor zero point calibration

    • Power steering ECU assembly

    • Steering column assembly

    Torque sensor zero point calibration

    • DTCs are output

    • Steering effort different between turning steering wheel left and right

    -

    Power steering ECU assembly

    Assist map writing

    • DTCs are output

    • EPS warning light illuminates

    • Certification ECU (smart key ECU assembly)*5

    • ID code box (immobiliser code ECU)*4*5

    • Steering lock ECU (steering lock actuator assembly)*5

    • Electrical key transmitter sub-assembly*5

    • ECM*5

    Code registration (Immobiliser system (w/ Entry and start system))

    • Wireless door lock control system

    • Entry and start system

    • Engine start

    • Steering lock system

    See the Service Bulletin for the registration method.

    • Door control transmitter assembly*6

    • Door control receiver with ECU assembly*6

    Registration of Recognition Code

    Wireless door lock control system

    -

    • Door control transmitter assembly*6

    • Transponder key ECU assembly*6

    • ECM*6

    Code registration (Immobiliser system (w/o Entry and start system))

    Engine start

    See the Service Bulletin for the registration method.

    • Sliding roof canvas sub-assembly

    • Sliding roof ECU

    • Slide roof motor assembly

    Initialize canvas top system

    Canvas top system

    -

  • *1: w/ Stop and Start System

  • *2: w/ Tire Pressure Warning System

  • *3: w/ VSC

  • *4: for RHD

  • *5: w/ Entry and Start System

  • *6: w/o Entry and Start System

  • *7: Before Removal

  • *8: Before replacing the TCM, use the GTS to perform Read Learning Value as it is necessary to perform initialization and learning after replacement. If the learned value cannot be read using the GTS, replace the clutch disc and clutch cover as a set.

  • *9: When installing a clutch actuator, make sure that the clamp position of the clutch actuator has already been in the adjusted position.

    - It is not necessary to adjust the clamp position of a new clutch actuator (service supply part) as it will already be in the adjusted position.

    - When reusing the clutch actuator, make sure that the clamp position of the clutch actuator has already been in the adjusted position when removing the clutch actuator.