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

Refer to the TOYOTA Repair Manual for each inspection procedure.


  1. PROCEDURES NECESSARY WHEN ECU OR OTHER PARTS ARE REPLACED

    Procedures Necessary when ECU or Other Parts are Replaced
    Replacement Part Necessary Procedures Effects / Inoperative Functions When Necessary Procedures are not Performed Notes
    ECM Register VIN DTC P0630 is output. -

      1VD-FTV, w/ DPF:

    • Learning values save

    • Learning values write

    		 Engine starting -

      1VD-FTV, w/o DPF:

    • Learning values save

    • Learning values write

    • Input Injector Compensation Code

    		 Engine starting -
    Engine assembly

      1VD-FTV, w/ DPF:

    • Clear Crank Time Compensation Data

    • Injector compensation code registration

    • Pilot quantity learning

    		 Engine starting -

      1VD-FTV, w/o DPF:

    • Injector compensation code registration

    		 Engine starting -
    Injector assembly

      1VD-FTV, w/ DPF:

    • Injector compensation code registration

    • Pilot quantity learning

    		 DTC P062F is output -

      1VD-FTV, w/o DPF:

    • Injector compensation code registration

    		 DTC P1601 is output -
    Fuel supply pump assembly Supply pump initialization Engine startability -

      1VD-FTV, w/ DPF:

    • Crankshaft position sensor plate

    		 Clear crank time compensation data Crank time compensation data compensation amount is same as before replacement, affecting crank time compensation data -

      1VD-FTV, w/ DPF:

    • Air fuel ratio sensor

    		 Clear A/F sensor compensation data EGR volume is affected -

      1VD-FTV, w/ DPF:

    • Front exhaust pipe assemblies (DPF catalytic converter)

    • Monolithic converter assemblies (CCo catalytic converter)

    • Clear DPF thermal deterioration data

    • Learning values write

    		 Even if catalytic converter is replaced with new one, catalyst record of DPF thermal deterioration stored in ECM is same as before replacement -

      3UR-FE:

    • Throttle body assembly

    • Cleaning the deposits from the throttle body assembly

    • Engine assembly

    • Cylinder head sub-assembly

    • Camshaft (for intake or exhaust camshaft)

    • Camshaft timing gear assembly

    • Camshaft timing exhaust gear assembly

    • Piston or piston ring

    • Mass air flow meter sub-assembly

    • Fuel injector assembly

    • Fuel pump

    • Air fuel ratio sensor

    • Heated oxygen sensor

    • Engine coolant temperature sensor

    • Spark plug

    • Ignition coil assembly

    • Air leaks from air induction system

    • Gas leaks from exhaust system

    • Knock control sensor

    		 Initialization Engine control system -
    Millimeter wave radar sensor assembly Adjusting the radar beam axis Dynamic radar cruise control system does not operate normally -

    • Forward Recognition camera

    • Windshield glass

    		 Adjust forward recognition camera

    • Lane departure alert system

    • Forward recognition camera system

    • Dynamic radar cruise control system

    • Pre-crash safety system

    • Automatic high beam system

    		 -

      A750F:

    • Automatic transmission assembly

    • Valve body assembly

    • Any of shift solenoid valves

    		 Reset memory Large shift shock -

      A750F:

    • Automatic transmission fluid

    		 ATF thermal degradation estimate reset The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly.

      AB60F:

    • Automatic transmission assembly

    • Valve body assembly

    • Any of shift solenoid valves

    		 Reset memory Large shift shock -

      AB60F:

    • Automatic transmission fluid

    		 ATF thermal degradation estimate reset The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly.

      AE80F:

    • Automatic transmission assembly

    • Transmission valve body assembly

    • Any of shift solenoid valves

    		 Reset memory

    • Large shift shock

    • Engine overruns

    		 -

      AE80F:

    • Automatic transmission 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

    • Tire pressure warning valve and transmitter

    1. Register transmitter IDs

    2. Initialize tire pressure warning system

    3. Tire Position Identification

    • 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 of replaced wheel

    • Tire Inflation Pressure Display Function

    		 -

    • Suspension control ECU

    • Height control sensor

    		 Vehicle height offset calibration Vehicle height sensor date may be affected due to installation position, or vehicle height recognition may be erroneous -
    Skid control ECU (Master cylinder solenoid)

      w/o VSC:

    • Deceleration sensor zero point calibration

    		 The brake control system does not operate properly -

      w/ VSC:

    1. Clearing zero point calibration data

    2. Yaw rate and acceleration sensor zero point calibration

    		 The brake control and dynamic control systems do not operate properly -

      w/o VSC:

    • Deceleration sensor

    1. Clearing zero point calibration data

    2. Deceleration sensor sensor zero point calibration

    		 The brake control system does not operate properly -

      w/ VSC:

    • Yaw Rate and Acceleration Sensor (Airbag Sensor Assembly)

    1. Clearing zero point calibration data

    2. Yaw rate and acceleration sensor zero point calibration

    		 The brake control and dynamic control systems do not operate properly -

      w/ VSC:

    • Vehicle height adjustment

    1. Clearing zero point calibration data

    2. Yaw rate and acceleration sensor zero point calibration

    3. Steering sensor initialization

    		 The brake control and dynamic control systems do not operate properly

    • Steering control ECU

    • Steering actuator assembly

    • Steering wheel assembly

    • Steering column assembly

    • Steering intermediate shaft

    • Front wheel alignment has been adjusted

    • Power steering link assembly

    • Steering wheel is still off-center after completing

    		 Calibration

    • VGRS system

    • DTC output

    		 -
    Multi-media module receiver assembly (w/ G-BOOK system) Vehicle contract setting G-BOOK service -
    Download necessary data Some G-BOOK service content will be unavailable -

      w/ Parking Assist Monitor System:

    • Spiral with sensor cable sub-assembly

    		 Steering angle neutral point (Initialize parking assist monitor system) Parking assist monitor system -

      w/ Parking Assist Monitor System:

    • Suspension, tires, etc.

    		 Rear television camera assembly optical axis (Back camera position setting)

      w/ Parking Assist Monitor System:

    • Rear television camera assembly

    • Parking assist monitor system initialization

    • Rear television camera assembly optical axis (Back camera position setting)

      w/ Multi-terrain Monitor:

    • Spiral with sensor cable sub-assembly

    		 Steering angle neutral point (Initialize multi-terrain monitor system) Multi-terrain Monitor system -

      w/ Multi-terrain Monitor:

    • Parking assist ECU

    • Parking assist ECU initialization

    • Adjust steering angle

      w/ Multi-terrain Monitor:

    • Rear television camera assembly

    		 Rear television camera view adjustment

      w/ Multi-terrain Monitor:

    • Front television camera assembly

    		 Front television camera view adjustment

      w/ Multi-terrain Monitor:

    • Side television camera assembly LH

    • Outer rear view mirror assembly LH

    • Side television camera assembly RH

    • Outer rear view mirror assembly RH

    		 Side television camera view adjustment

      w/ Multi-terrain Monitor:

    • Front television camera assembly or radiator grille assembly

    • Rear television camera assembly

    • Side television camera assembly LH or outer rear view mirror assembly LH

    • Side television camera assembly RH or outer rear view mirror assembly RH

    		 Television camera view adjustment

      w/ Multi-terrain Monitor:

    • Suspension, tires, etc.

    		 Adjust steering angle

      w/ Entry and Start System:

    • Certification ECU (smart key ECU assembly)

    • Steering lock ECU (steering lock actuator assembly)

    • ID code box (immobiliser code ECU)

    • Main body ECU (multiplex network body ECU)

    • Electrical key transmitter sub-assembly

    • ECM

    		 Registration

    • Wireless door lock operation

    • Entry operation

    • Engine starting

    • Steering unlock

    		 Refer to the Service Bulletin for the registration procedure.

      w/o Entry and Start System:

    • Key

    • Transponder key ECU assembly

    • ECM

    		 Registration Engine starting Refer to the Service Bulletin for the registration procedure.

      w/o Entry and Start System:

    • Door control transmitter

    • Door control receiver

    		 Register recognition code Wireless door lock operation -
    Servo motors Servomotors initialization Air conditioning system does not operate properly -

      for Models with Jam Protection Function on 4 Windows:

    • Door window regulator assembly

    • Power window regulator motor assembly

    • Door glass

    • Door glass run

    		 Initialize the motor

    • Auto up and down function

    • Jam protection function

    • Catch protection function

    • Remote control function

    • Key-linked function

    • Key-off operation function

    		 -

      for Models with Jam Protection Function on Driver Door Window Only:

    • Front Power window regulator motor LH (for LHD)

    • Front Power window regulator motor RH (for RHD)

    		 Initialize the motor

    • Catch protection function

    • Auto Operation

    • Jam protection function

    • Power window control system (for Models with Jam Protection Function on Driver Door Window Only)

    		 -
    Inner rear view mirror

    • Compass zone setting

    • Compass calibration

    • Register transmitter code

    		 Direction is not displayed correctly -

    • Sliding roof driver gear (Sliding roof ECU)

    • Sliding roof glass

    		 Initialize sliding roof system

    • Auto operation

    • Jam protection function

    • Sliding roof operation after engine switch OFF

    • Wireless door lock control function

    • Key-linked operation function (Driver side door only)

    • Entry lock switch-linked operation

    		 -

    • Power back door unit

    • Back door lock

    		 Initialize back door system Power back door system -

      w/ Static Headlight Auto Leveling:

    • Headlight leveling ECU

    • Height control sensor LH

    		 Initialization Headlight leveling function -

      w/ Dynamic Headlight Auto Leveling, w/o Active Height Control Suspension:

    • Headlight swivel ECU

    • Height control sensor LH

    		 Initialization Headlight leveling function