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

    Procedures Necessary when ECU or Other Parts are Replaced
    Replacement Part Necessary Procedure Effect or Inoperative Function when Necessary Procedure is not Performed Note

      for 1ZR-FAE, 2ZR-FAE:

    • ECM

    		 Vehicle Identification Number (VIN) registration DTC P0630 is output -

      for 1ZR-FAE, 2ZR-FAE:

    • Throttle body assembly

    • Cleaning the deposits from the throttle body assembly

    • Engine assembly

    • Continuously variable valve lift controller assembly

    • Cylinder head sub-assembly

    • Camshaft housing

    • Camshaft timing gear assembly

    • Camshaft timing exhaust gear assembly

    • Piston or piston ring

    • Mass air flow meter

    • Fuel injector assembly

    • Fuel pump

    • Air fuel ratio sensor

    • Engine coolant temperature sensor

    • Spark plug

    • Ignition coil assembly

    • Air leaks from intake system

    • Knock sensor

    • Gas leaks from exhaust system

    		 Inspection after repair Poor idle, engine start, etc. -

      for 1WW:

    • ECM

    • Learning Values Save

    • Learning Values Write

    		 - -

      for 1WW:

    • Injector Assembly

    		 Injector Compensation - -

      for 1WW:

    • Fuel Supply Pump Assembly

    		 Supply Pump Learning Value Reset - -

      for 1WW:

    • Exhaust Manifold Converter Sub-assembly (Catalytic Converter)

    • DPF History Information Reset

    • NOx Storage Catalyst Learning Value Reset

    		 -

      for 1WW:

    • Air Fuel Ratio Sensor

    		 O2 Sensor Learning Value Reset -

      for 1WW

    • Mass Air Flow Meter

    		 Air Flow Meter Learning Value Reset -

      for 1WW:

    • EGR Valve Assembly

    		 EGR Learning Value Reset -

      for 1WW:

    • Differential Pressure Sensor

    		 Differential Pressure Learning Value Reset -

      for 1WW:

    • Swirl Control Valve

    		 Swirl Valve Learning Value Reset -

      for 1WW:

    • Pressure Discharge Valve

    		 Fuel PCV Compensation Value Reset -

      for 1WW:

    • Turbo Pressure Sensor Assembly

    		 Upstream Turbine Pressure Learning Value Reset -

      for 1WW:

    • Engine Assembly

    		 Injector Compensation - -

      w/ Stop and Start System:

    • Engine stop and start ECU

    • Upload the number of starter operations

    • Reset air conditioning information

    • Learning of the air conditioning information

    • Clear the deceleration sensor zero point calibration data

    • Perform zero point calibration of the deceleration sensor

    		 Stop and start system -

      w/ Stop and Start System:

    • Starter assembly

    		 Clear the number of the starter operations

      w/ Stop and Start System:

    • Air conditioning amplifier assembly

    • Reset air conditioning information

    • Learning of the air conditioning information
    Yaw rate sensor assembly

      w/ Stop and Start System:

    • Clear the zero point calibration of the deceleration sensor

    • Perform zero point calibration of the deceleration sensor

    		 Stop and start system -

      for K313:

    • Reset memory

    • Yaw rate sensor 0 point calibration

    • CVT oil pressure calibration

    • Deterioration of fuel efficiency

    • DTC P1589 is output (Malfunction Indicator Lamp (MIL) not illuminates)

    		 -

      w/ Vehicle Stability Control System:

    • Clear zero point calibration data

    • Perform system variant learning and acceleration sensor zero point calibration

    		 Vehicle stability control system -

    • Continuously variable transaxle assembly

    • ECM

    • Oil pressure sensor

    • Reset memory

    • Yaw rate sensor 0 point calibration

    • CVT oil pressure calibration

    • Deterioration of fuel efficiency

    • DTC P1589 is output (Malfunction Indicator Lamp (MIL) not illuminates)

    		 -
    CVT fluid ATF thermal degradation estimate reset The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly -
    Tire pressure warning ECU and receiver

    • Register transmitter IDs

    • Initialize tire pressure warning system

    • When DTC detection conditions of "transmitter ID not received" DTC is met, tire pressure warning light blinks for 1 minute, and then illuminates

    • Tire pressure monitoring function

    		 -
    Skid control ECU (brake actuator assembly) Perform system variant learning and acceleration sensor zero point calibration Vehicle stability control system -
    Power steering ECU assembly

    • Assist map writing

    • Rotation angle sensor initialization and torque sensor zero point calibration

    • EPS warning light comes on

    • Power steering system

    		 -

      w/ Entry and Start System:

    • Certification ECU

    • ID code box

    • Steering lock ECU

    • Key

    		 Code registration

    • Wireless door lock control system

      (w/ Entry and Start System)

    • Engine start

      (w/ Entry and Start System)

    • Steering unlock

      (w/ Entry and Start System)

    • Entry operation

    		 Refer to the Service Bulletin for the registration procedure.

      w/o Entry and Start System:

    • Transponder key ECU

    • Key

    		 Code registration

    Engine start

    (w/o Entry and Start System)

    		 Refer to the Service Bulletin for the registration procedure.

    • Pre-collision city sensor

    • Windshield glass

    1. Recognition camera/target position memory

    2. Recognition camera axis adjust

    • Lane departure alert system

    • Pre-collision system

    • Automatic high beam system

    		 -

    • Headlight Leveling ECU Assembly

    • The vehicle height changes due to replacement of suspension components or after performing such operations as removal and reinstallation or replacement of the rear height control sensor sub-assembly

    		 Headlight leveling ECU initialization Headlight leveling function -

      w/o Entry and Start System:

    • Door control receiver assembly

    • Key

    		 Code registration

    Wireless door lock control system

    (w/o Entry and Start System)

    		 -

    • Front power window regulator assembly LH

    • Front power window regulator assembly RH

    • Rear power window regulator assembly LH

    • Rear power window regulator assembly RH

    		 Motor initialization

    • Jam protection function

    • Power window control system

    		 -

    • Sliding roof drive gear sub-assembly

    		 Roof sunshade system initialization

    • Jam protection function

    • Auto operation

    		 -