WHEN REMOVING,INSTALLING 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 2TR-FE:

    • ECM

    		 Register VIN DTC P0630 is output -

      for 2TR-FE:

    • Throttle body with motor assembly

    • Cleaning the deposits from the 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 leaks from intake system

    • Gas leaks from exhaust system

    • Knock control sensor

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

      for 1GR-FE:

    • ECM

    		 Register VIN DTC P0630 is output -

      for 1GR-FE, Automatic Transmission:

    • Throttle body with motor assembly

    • Cleaning the deposits from the 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 leaks from intake system

    • Gas leaks from exhaust system

    • Knock control sensor

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

      for 1GR-FE, Manual Transmission:

    • ECM

    • Throttle body with motor assembly

    • Learning values save

    • Learning values write

    		 Engine starting -

      for 1KD-FTV:

    • ECM

    • Learning values save

    • Learning values write

    		 Engine starting -
    Register VIN DTC P0630 is output

      for 1KD-FTV:

    • Engine assembly

    • Clear crank time compensation data

    • Input injector compensation code

    • Pilot quantity learning

    		 Engine starting -

      for 1KD-FTV:

    • 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 -

      for 1KD-FTV:

    • Fuel supply pump

    		 Supply pump initialization Engine startability is affected -

      for 1KD-FTV:

    • Fuel injector

    • Injector compensation code registration

    • Pilot quantity learning

    		 Injector fuel injection compensation amount is same as before replacement, affecting injector fuel injection volume -

      for 1GD-FTV:

    • ECM

    • Learning values save

    • Learning values write

    		 Engine starting -
    Register VIN DTC P0630 is output

      for 1GD-FTV:

    • Engine assembly

    • Clear crank time compensation data

    • Input injector compensation code

    • Pilot quantity learning

    		 Engine starting -

      for 1GD-FTV:

    • 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 -

      for 1GD-FTV:

    • Air fuel ratio sensor

    		 Clear A/F sensor compensation data -

      for 1GD-FTV:

    • Exhaust manifold converter sub-assembly

    		 Clear DPF deterioration data -

      for 1GD-FTV:

    • Injector assembly

    • Input injector compensation code

    • Pilot quantity learning

    		 Engine starting -

      for 1GD-FTV, w/ Urea SCR System:

    • ECM

    • Learning values save

    • Learning values write

    		 Engine starting -
    Register VIN DTC P0630 is output

      for 1GD-FTV, w/ Urea SCR System:

    • Engine assembly

    • Clear crank time compensation data

    • Input injector compensation code

    • Pilot quantity learning

    		 Engine starting -

      for 1GD-FTV, w/ Urea SCR System:

    • 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 -

      for 1GD-FTV, w/ Urea SCR System:

    • Air fuel ratio sensor

    		 Clear A/F sensor compensation data -

      for 1GD-FTV, w/ Urea SCR System:

    • Exhaust manifold converter sub-assembly

    		 Clear DPF deterioration data -

      for 1GD-FTV, w/ Urea SCR System:

    • Injector assembly

    • Input injector compensation code

    • Pilot quantity learning

    		 Engine starting -

    • Forward recognition camera

    • Windshield glass

    		 Adjust forward recognition camera

    • Lane departure alert system

    • Road sign assist system

    • Dynamic radar cruise control system

    • Forward recognition camera system

    • Pre-crash safety system

    • Automatic high beam system

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

    • Lane departure alert system

    • Road sign assist system

    • Dynamic radar cruise control system

    • Forward recognition camera system

    • Pre-crash safety system

    		 -

      for A750F, 1KD-FTV:

    • Automatic transmission assembly

    • Valve body assembly

    • Any of the shift solenoid valves

    		 Reset memory Large shift shock -

      for AC60F, 2TR-FE:

    • Automatic transmission assembly

    • Transmission valve body assembly

    • Any of the shift solenoid valves

    		 Reset memory

    • Large shift shock

    • Engine overruns

    		 -

      for AC60F, 2TR-FE:

    • Automatic transmission fluid

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

      for AC60F, 1GR-FE:

    • Automatic transmission assembly

    • Transmission valve body assembly

    • Any of the shift solenoid valves

    		 Reset memory

    • Large shift shock

    • Engine overruns

    		 -

      for AC60F, 1GR-FE:

    • Automatic transmission fluid

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

      for AC60F, 1GD-FTV:

    • Automatic transmission assembly

    • Transmission valve body assembly

    • Any of the shift solenoid valves

    		 Reset memory

    • Large shift shock

    • Engine overruns

    		 -

      for AC60F, 1GD-FTV:

    • 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

    1. Register transmitter IDs

    2. 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

    		 -
    Suspension control ECU Registration Air suspension system -

    • Brake actuator assembly

    • Acceleration sensor

    		 Calibration Anti-lock brake system -

    • Skid control ECU (Master cylinder solenoid)

    • Yaw Rate and Acceleration Sensor (Airbag Sensor Assembly)

    • Steering Angle Sensor (Spiral with Sensor Cable Sub-assembly)

    		 Calibration Vehicle stability control system (for Hydraulic Brake Booster) -

    • Skid control ECU (Brake actuator assembly)

    • Yaw rate and acceleration sensor (Airbag sensor assembly)

    • Steering angle sensor (Spiral cable sub-assembly)

    		 Calibration Vehicle stability control system (for Vacuum Brake Booster) -
    Telematics transceiver Register vehicle information Emergency call service -
    Mobilephone battery Reset mobilephone battery condition

    • Spiral cable sub-assembly

    • Rear television camera assembly

    • Suspension, tires, etc.

    		 Calibration Parking assist monitor system (for Camera built-in ECU) -

      w/ Multi-terrain Monitor:

    • Spiral with sensor cable sub-assembly

    • Steering angle neutral point

    • Adjust steering angle

    		 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
    Blind spot monitor sensor Blind spot monitor beam axis inspection

    • DTCs are output

    • Blind spot monitor system

    		 -

      w/ Entry and Start System:

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

    • Certification ECU (smart key ECU assembly)

    • ID code box (immobiliser code ECU)

    • Electrical key transmitter sub-assembly

    • ECM

    • Main body ECU (multiplex network body ECU)

    		 Code registration

    • Engine immobiliser system

    • Engine start

    • Steering lock and unlock

    • Entry and Start System (for Entry Function)

    • Wireless door lock control system

    		 Refer to the Service Bulletin for the registration procedure.

      w/o Entry and Start System:

    • Transponder key ECU

    • ECM

    • Key

    		 Code registration

    • Engine immobiliser system

    • Engine start

    		 Refer to the Service Bulletin for the registration procedure.

      w/o Entry and Start System:

    • Door control receiver assembly

    • Key

    		 Code registration Wireless door lock control system (w/o Entry and Start System) -
    Fold seat control ECU Position memory initialization Rear power seat system -

    • Door window regulator assembly

    • Power window regulator motor assembly

    • Door glass

    • Door glass run

    		 Initialize power window control system

    • Auto up and down function

    • Remote control function

    • Key-linked function

    • Wireless transmitter-linked function

    • Key-off operation function

    • Jam protection function

    • Catch protection function

    		 -

    • Sliding roof ECU (sliding roof drive gear sub-assembly)

    • Sliding roof glass

    • Sliding roof housing

    		 Sliding roof system initialization

    • DTC B2343 output

    • AUTO operation

    • Jam protection function

    • Key-off operation

    • Wireless transmitter-linked operation function

    • Key-linked operation function

    		 -
    No. 1 headlight ECU sub-assembly LH

    • Synchronize the vehicle information

    • Perform No. 1 headlight ECU sub-assembly LH initialization (w/o Air Suspension System)

    		 Headlight leveling function -
    Replacement of the rear height control sensor sub-assembly RH, removal and reinstallation of the rear height control sensor sub-assembly RH, replacement of the suspension, etc. have been performed (w/o Air Suspension System) Perform No. 1 headlight ECU sub-assembly LH initialization