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

    Replacement Part Necessary Procedure Effect or Inoperative Function when Necessary Procedure is not Performed Link
    ECM

      for 1GR-FE:

    • VIN registration or frame number registration

    		 DTC P0630 is output -

      for 1KD-FTV, 2KD-FTV:

    • Learning Values Save

    • Learning Values Write

    • VIN registration

    		 Engine starting -

      for 1TR-FE, 2TR-FE:

    • VIN registration or frame number registration

    		 DTC P0630 is output -

      for 1GD-FTV, 2GD-FTV:

    • Learning Values Save

    • Learning Values Write

    • VIN registration

    • Engine starting

    • DTC P0630 is output

    		 -

      for 5L-E:

    • VIN registration or frame number registration

    • Engine starting

    • DTC P0630 is output

    		 -

    • Performing iMT installation information reset

    • iMT system

    • DTCs are output

    		 -
    Code registration (Immobiliser system) Engine start function See the Service Bulletin for the registration method.
    Engine assembly

      for 1GR-FE:

    • Inspection after repair

    		 Poor idle, engine start, etc. -

      for 1KD-FTV, 2KD-FTV:

    • Input Injector Compensation Code

    • Pilot Quantity Learning

    		 Engine starting -

      for 1GD-FTV, 2GD-FTV:

    • Input Injector Compensation Code

    • Pilot Quantity Learning

    		 Engine starting -

      for 1GD-FTV, 2GD-FTV:

    • Clear Crank Time Compensation Data

    		 Engine starting -

      for 1TR-FE, 2TR-FE:

    • Inspection after repair

    		 Poor idle, engine start, etc. -

      for 1GD-FTV, 2GD-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 (w/ DPF), 2GD-FTV (w/ DPF), 2GD-FTV (w/ Urea SCR System):

    • Crankshaft angle 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/ DPF), 2GD-FTV (w/ DPF), 2GD-FTV (w/ Urea SCR System):

    • Air fuel ratio sensor

    		 Clear A/F Sensor Compensation data - -

      for 1GD-FTV (w/ DPF), 2GD-FTV (w/ DPF), 2GD-FTV (w/ Urea SCR System):

    • Exhaust manifold converter sub-assembly

    		 Clear DPF Thermal Deterioration Data - -

      for 1GD-FTV, 2GD-FTV:

    • Diesel throttle body assembly

    • Electric EGR control valve assembly

    • Turbocharger sub-assembly

    • Turbocharger nozzle vane control actuator

    		 Perform initialization - -
    Injector assembly

      for 1KD-FTV, 2KD-FTV:

    • Input Injector Compensation Code

    • Pilot quantity learning

    		 Engine starting -

      for 1GD-FTV, 2GD-FTV:

    • Input Injector Compensation Code

    • Pilot Quantity Learning

    		 Engine starting -

      for 1KD-FTV, 2KD-FTV:

    • Fuel supply pump assembly

    		 Supply Pump Initialization Engine startability -

      for 1KD-FTV:

    • Diesel throttle body assembly

    • Turbocharger sub-assembly

    • Turbocharger variable nozzle motor

    		 Perform initialization - -

      for 2KD-FTV:

    • Diesel throttle body assembly

    		 Perform initialization - -

      for 1KD-FTV, 2KD-FTV, 5L-E:

    • Timing belt

    		 Mode reset operation

    • Does not illuminate when replacement is necessary

    • Illuminates when replacement is not necessary

    		 -

      for 1GR-FE:

    • Throttle with motor body assembly

    • Cleaning the deposits from the throttle with motor body assembly

    • Cylinder head sub-assembly

    • Camshaft (for intake or exhaust camshaft)

    • Camshaft timing 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 start, etc. -

      for 1TR-FE, 2TR-FE:

    • Throttle with motor body assembly

    • Cleaning the deposits from the throttle with motor body 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 start, etc. -
    Millimeter wave radar sensor assembly Adjust millimeter wave radar sensor assembly Pre-crash safety system -

    • Forward recognition camera

    • Windshield glass

    		 Adjust forward recognition camera

    • Forward recognition camera system

    • Lane departure alert system

    • Road sign assist system

    • Pre-crash safety system

    		 -
    Engine stop and start ECU

    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

    6. Check electromagnetic oil pump

    		 Stop and start system -

      w/ Stop and Start System:

    • Starter assembly

    Note

    When the starter assembly is replaced, "ST NO. 1 relay" and "ST NO. 2 relay" must be also replaced.

    		 Clear the number of starter operations

      w/ Stop and Start System:

    • Flywheel sub-assembly

    		 Total number of engine starts reset

      w/ Stop and Start System:

    • Vehicle with a non-specified battery

    		 Perform battery type switching

      for AC60F, w/ Stop and Start System:

    • Electromagnetic oil pump

    		 Check electromagnetic oil pump

      for A750F:

    • Automatic transmission assembly

    • Transmission valve body assembly

    • Any of the shift solenoid valves

    		 Reset memory

    • Large shift shock

    • Engine overruns

    		 -

      for A750F:

    • Automatic transmission fluid

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

      for AC60E:

    • Automatic transmission assembly

    • Transmission valve body assembly

    • Any of the shift solenoid valves

    		 Reset memory

    • Large shift shock

    • Engine overruns

    		 -

      for AC60E:

    • 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:

    • Automatic transmission assembly

    • Transmission valve body assembly

    • Any of the shift solenoid valves

    		 Reset memory

    • Large shift shock

    • Engine overruns

    		 -

      for AC60F:

    • Automatic transmission fluid

    		 ATF thermal degradation estimate reset The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly
    Skid control ECU (Brake actuator assembly)

      w/o VSC:

    • Perform registration of rear differential lock identification information

    • DTCs are output

    • ABS warning light illumination

    		 -

      w/ VSC:

    • Yaw rate and acceleration sensor zero point calibration and store system information

    • DTCs are output

    • ABS warning light illumination

    • Slip indicator light illumination

    • VSC disable or malfunctioning

    		 -
    Yaw rate and acceleration sensor (airbag sensor assembly)

    • Clear zero point calibration data and store system information

    • Perform yaw rate and acceleration sensor zero point calibration and store system information

      w/ Stop and Start System:

    • Clear zero point calibration data and store system information

    		 Stop and start system -
    Front wheel alignment adjustment

    • Clear zero point calibration data and store system information.

    • Perform yaw rate and acceleration sensor zero point calibration and store system information.

    		 VSC malfunctioning -
    Air conditioning amplifier assembly

      w/ Stop and Start System:

    1. Reset air conditioning information

    2. Learning of air conditioning information

    		 Stop and start system -
    Servo motor initialization 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

    		 Servo motor initialization DTCs are output -

      w/ Entry and Start System:

    • Certification ECU (smart key ECU assembly)

    • Steering lock ECU (steering lock actuator assembly)

    • Electrical key transmitter sub-assembly

    • w/ ID Code Box (Immobiliser Code ECU):

      ID code box (immobiliser code ECU)

    		 Code registration

    • Wireless door lock control system

    • Entry and start system

    • Immobiliser system

    • Steering lock system

    		 Refer to the Service Bulletin for the registration procedure.

      w/o Entry and Start System:

    • Key

    • Transponder key ECU assembly

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

      w/o Entry and Start System:

    • Door control transmitter assembly

    • Door control receiver

    		 Recognition code registration Wireless door lock control system -

    • Power window regulator motor assembly

    • Door window regulator assembly

    • Door glass

    • Door glass run

    		 Initialize power window control system

    • Jam protection function

    • Power window control system

    • Auto up and down function

    • Remote control function

    • Key-off operation function

    • Catch protection function

    		 -

      w/ Automatic Light Control System:

    • Body ECU

    		 Initialize automatic light control system Automatic light control system -

    • Headlight leveling ECU assembly

    • Rear height control sensor sub-assembly LH

    • The vehicle height changes due to replacement of suspension components or after performing such operations as removal and reinstallation

    		 Headlight leveling ECU assembly initialization Headlight leveling function -