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 not Performed Note
    ECM Vehicle Identification Number (VIN) registration MIL comes on -
    Perform code registration (Immobiliser system) Engine start function See Service Bulletin for the registration method.

      for 2AR-FE

    • Throttle body with motor 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

    • Engine coolant temperature sensor

    • Spark plug

    • Ignition coil assembly

    • Air intake system parts

    • Exhaust system parts

    • Knock control sensor

    		 Inspection after repair

    • Poor idle, etc.

    • Engine start function, etc.

    		 -

      for A25A-FKS

    • Throttle body with motor assembly

    • Cam timing control motor with EDU assembly

    • Removal and installation of a cam timing control motor with EDU assembly

    • Camshaft timing gear assembly

    • Removal and installation of a camshaft timing gear assembly

    • Engine assembly

    • Cylinder head sub-assembly

    • Camshaft (for intake or exhaust camshaft)

    • Camshaft timing exhaust gear assembly

    • Piston or piston ring

    • Mass air flow meter sub-assembly

    • Port fuel injector assembly

    • Direct fuel injector assembly

    • Fuel pump (for low pressure side)

    • Fuel pump assembly (for high pressure side)

    • Fuel pressure sensor (fuel delivery pipe with sensor sub-assembly) (for low pressure side)

    • Fuel pressure sensor (for high pressure side)

    • Air fuel ratio sensor (sensor 1)

    • Air fuel ratio sensor (sensor 2)

    • Engine coolant temperature sensor

    • Spark plug

    • Ignition coil assembly

    • EGR valve assembly

    • Air intake system parts

    • Exhaust system parts

    • Knock control sensor

    		 Inspection after repair

    • Poor idle, etc.

    • Engine start function, etc.

    		 -

      for 6AR-FSE

    • Throttle body with motor 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

    • Port fuel injector assembly

    • Direct fuel injector assembly

    • Fuel pump (for low pressure side)

    • Fuel pump with seal assembly (for high pressure side)

    • Fuel pressure sensor(fuel delivery pipe sub-assembly)

    • Air fuel ratio sensor

    • Engine coolant temperature sensor

    • Spark plug

    • Ignition coil assembly

    • EGR valve assembly

    • Air intake system parts

    • Exhaust system parts

    • Knock control sensor

    		 Inspection after repair

    • Poor idle, etc.

    • Engine start function, etc.

    		 -

      for 2GR-FKS

    • Throttle body with motor 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 (for port injection)

    • Fuel injector assembly (for direct injection)

    • Fuel pump (for low pressure side)

    • Fuel pump assembly (for high pressure side)

    • Fuel pressure sensor (for low pressure side)

    • Fuel pressure sensor (for high pressure side)

    • Air fuel ratio sensor

    • Engine coolant temperature sensor

    • Spark plug

    • Ignition coil assembly

    • Air intake system parts

    • Exhaust system parts

    • Knock control sensor

    		 Inspection after repair

    • Poor idle, etc.

    • Engine start function, etc.

    		 -
    Millimeter wave radar sensor assembly Adjust millimeter wave radar sensor assembly

    • Dynamic Radar Cruise Control System

    • Forward Recognition Camera System

    • Lane Departure Alert System (w/ Steering Control)

    • Pre-collision System

    		 -

    • Forward recognition camera

    • Windshield glass

    		 Adjust forward recognition camera

    • Dynamic Radar Cruise Control System

    • Forward Recognition Camera System

    • Lane Departure Alert System (w/ Steering Control)

    • Pre-collision System

    • Lighting System (EXT) (w/ Automatic Headlight Beam Level Control System)

    • Road Sign Assist System

    		 -
    Automatic transaxle assembly

    1. Reset memory

    2. Input transaxle compensation code into ECM

    3. Perform road test to allow ECM to learn

    • Large shift shock

    • Deterioration of fuel efficiency

    		 -

    • Transmission valve body assembly

    • Solenoid (SL1, SL2, SL3, SL4, SL5 and/or SL6) valve

    1. Reset memory

    2. Reset transaxle compensation code

    3. Perform road test to allow ECM to learn

    ECM

    (If possible, read the transaxle compensation code from the previous ECM)

    1. Reset memory*1

    2. Transfer transaxle compensation code

    3. Perform road test to allow ECM to learn

    ECM

    (If impossible, read the transaxle compensation code from the previous ECM)

    1. Reset memory*1

    2. Reset transaxle compensation code

    3. Perform road test to allow ECM to learn
    Automatic transaxle assembly

    1. Reset memory

    2. Input transaxle compensation code into ECM

    3. Perform road test to allow ECM to learn

    • Large shift shock

    • Deterioration of fuel efficiency

    		 -

    • Transmission valve body assembly

    • Solenoid (SL1, SL2, SL3, SL4, SL5 and/or SL6) valve

    1. Reset memory

    2. Reset transaxle compensation code

    3. Perform road test to allow ECM to learn

    ECM

    (If possible, read the transaxle compensation code from the previous ECM)

    1. Reset memory*1

    2. Transfer transaxle compensation code

    3. Perform road test to allow ECM to learn

    ECM

    (If impossible, read the transaxle compensation code from the previous ECM)

    1. Reset memory*1

    2. Reset transaxle compensation code

    3. Perform road test to allow ECM to learn
    Automatic transaxle assembly

    Perform the following procedures in the order shown:


    1. Reset Memory

    2. Input transaxle compensation code into ECM

    3. Perform road test to allow ECM to learn

    • Large shift shock

    • The deterioration of fuel efficiency

    		 -

    • Valve body assembly

    • Shift solenoid valve SL3 and/or SL4

    Perform the following procedures in the order shown:


    1. Reset Memory

    2. Reset transaxle compensation code

    3. Perform road test to allow ECM to learn
    Shift solenoid valve SL1 and/or SL2 Perform road test to allow ECM to learn
    ECM (If possible, read the transaxle compensation code from the previous ECM) Possible

    Perform the following procedures in the order shown:


    1. Reset Memory

    2. Transfer transaxle compensation code

    3. Perform road test to allow ECM to learn
    Impossible

    Perform the following procedures in the order shown:


    1. Reset Memory

    2. Reset transaxle compensation code

    3. Perform road test to allow ECM to learn

      for U760E

    • Automatic transaxle 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

    • Register Transmitter ID

    • 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 warning function

    		 -

    • Skid control ECU (brake actuator assembly)

    • Yaw rate and acceleration sensor (airbag sensor assembly)

    		 Perform system variant learning and acceleration sensor zero point calibration.

    • VSC disabled or malfunctioning

    • DTCs are output

    • Slip indicator light illuminated

    • ABS warning light illuminated

    		 -
    Skid control ECU (brake actuator assembly) Operate the electric parking brake switch (electric parking brake switch assembly) Parking brake indicator light (red) blinks when the engine switch is first turned on (IG) -
    Rack and pinion power steering gear assembly

    • Perform torque sensor zero point calibration

    • Assist Map Writing

    • DTCs are output

    • Steering effort different between turning steering wheel left and right

    • EPS warning light illuminates

    		 -
    Telematics transceiver*8 Register vehicle information Emergency call service -
    Mobilephone battery*8 Reset mobilephone battery condition

    • Clearance warning ECU assembly

    • Ultrasonic sensor

    		 Adjust TOYOTA parking assist-sensor system TOYOTA Parking Assist-sensor System -
    Steering sensor

    • Steering angle neutral point (Initialize parking assist monitor system)

    • Steering angle setting

    		 Parking Assist Monitor System -
    Suspension, tires*2 Rear television camera assembly optical axis (Back camera position setting)
    Rear television camera assembly

    • Parking assist monitor system initialization

    • Rear television camera assembly optical axis (Back camera position setting)
    Steering sensor Steering angle neutral point (Initialize panoramic view monitor system) - -
    Television camera controller

    • Television camera controller initialization

    • Adjust steering angle
    Rear television camera assembly

    • Rear television camera view adjustment

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

    • Front television camera assembly

    • Front bumper assembly

    • Radiator grille

    		 Front television camera view adjustment

    • 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

    • Front television camera assembly, front bumper assembly or radiator grille

    • 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

    • Rear television camera assembly optical axis (Back camera position setting)*9
    Suspension, tires, etc.*2

    • Television camera controller initialization

    • Adjust steering angle

    • Rear television camera assembly optical axis (Back camera position setting)
    Blind spot monitor sensor Blind spot monitor beam axis adjustment Blind Spot Monitor System -

    • Certification ECU (smart key ECU assembly)*3

    • Steering lock ECU (steering lock actuator or upper bracket assembly)*3

    • Electrical key transmitter sub-assembly*3

    • ECM*3

    • Main body ECU (multiplex network body ECU)*3

    • ID code box (immobiliser code ECU)*7

    		 Perform code registration (Immobiliser function)

    • Wireless door lock control system

    • Smart Entry and Start System (for Entry Function)

    • Smart Entry and Start System (for Start Function)

    • Steering lock function

    		 See Service Bulletin for the registration method.

    • Transponder key ECU assembly*4

    • Door control transmitter module set sub-assembly*4

    • ECM*4

    		 Perform code registration (Immobiliser system)

    • Wireless Door Lock Control System

    • Engine start

    		 See Service Bulletin for the registration method.

    • Occupant detection ECU

    • Front passenger seat*5

    		 Zero point calibration (Occupant classification system)

    • Occupant classification system

    • Passenger airbag ON/OFF indicator

    • Airbag system (Front passenger side)

    • Seat belt warning system (Front passenger)

    		 -

    • Position control ECU assembly (driver seat)

    • Front seatback frame sub-assembly (driver seat)

    • Front seat adjuster assembly (driver seat)

    		 Initialize position control ECU Front Power Seat Control System -

    • No. 1 air conditioning radiator damper servo sub-assembly

    • No. 2 air conditioning radiator damper servo sub-assembly

    • No. 3 air conditioning radiator damper servo sub-assembly*6

    • No. 1 blower damper servo sub-assembly

    • Air conditioning amplifier assembly

    		 Initialization servo motor (Air conditioning system (for Automatic Air Conditioning System)) DTCs are output -

    • No. 1 air conditioning radiator damper servo sub-assembly

    • No. 2 air conditioning radiator damper servo sub-assembly

    • No. 1 blower damper servo sub-assembly

    • Air conditioning amplifier assembly

    		 Initialization servo motor (Air conditioning system (for Manual Air Conditioning System)) DTCs are output -

    • Door window regulator sub-assembly

    • Power window regulator motor sub-assembly

    • Door glass

    • Door glass run

    		 Initialize power window control system

    • Auto up and down function

    • Jam protection function

    • Remote control function

    • Key-linked function

    • Wireless transmitter-linked function

    • Key-off operation function

    • Catch protection function

    • Window open warning function

    		 -

    • Sliding roof ECU (sliding roof drive gear)

    • Sliding roof glass sub-assembly

    • Slide roof drive cable sub-assembly

    • Slide roof drive gear sub-assembly

    		 Initialize sliding roof system

    • Auto operation function

    • Jam protection function

    • Key-off operation function

    • Key-linked function

    • Wireless transmitter linked function

    • Sliding roof open warning function

    		 -

    • Sliding roof ECU (sliding roof drive gear)

    • Slide roof housing panel

    • Slide roof rail sub-assembly

    • Sliding roof glass sub-assembly

    		 Initialize panoramic moon roof system (for Sliding Roof)

    • Auto operation function

    • Jam protection function

    • Key-off operation function

    • Key-linked function

    • Wireless transmitter linked function

    • Sliding roof open warning function

    		 -

    • Roof sunshade ECU (sliding roof drive gear assembly)

    • Sunshade trim sub-assembly

    • Slide roof rail sub-assembly

    		 Initialize panoramic moon roof system (for Roof Sunshade)

    • Auto operation function

    • Jam protection function

    • Key-off operation function
    Headlight ECU sub-assembly LH

    • Synchronize the vehicle information

    • Perform headlight ECU sub-assembly LH initialization

    		 Lighting System (EXT) (w/ Automatic Headlight Beam Level Control System) -

    • Rear height control sensor sub-assembly LH

    • Suspension, tires*2

    		 Perform headlight ECU sub-assembly LH initialization

    *1: When the ECM is replaced with a new one, reset memory is unnecessary.

    *2: The vehicle height changes because of suspension or tire replacement.

    *3: w/ Smart Entry and Start System

    *4: w/o Smart Entry and Start System

    *5: w/ Occupant Classification System

    *6: for 3 Zone Type

    *7: w/ ID code box

    *8: w/ Telematics Transceiver for ERA-GLONASS

    *9: Applies only for when removing and installing or replacing the rear television camera assembly.