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 are not Performed

      for 1AD-FTV

    • ECM

    • Learning Values Save

    • Learning Values Write

    		 Engine start

      for 1AD-FTV

    • Engine assembly

    • Crank Time Compensation Reset

    • Injector Compensation Code

    • Pilot Quantity Learning

    • Engine starting

    • DTC is output

      for 1AD-FTV

    • No. 1 crankshaft position sensor plate

    		 Crank Time Compensation Reset

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

    • DTC is output

      for 1AD-FTV

    • Air fuel ratio sensor

    		 A/F Sensor Compensation Reset

    • EGR volume is affected

    • DTC is output.

      for 1AD-FTV

    • Supply pump assembly

    • Suction control valve

    		 Supply Pump Initialization

    • Engine start

    • DTC is output

      for 1AD-FTV

    • Exhaust manifold converter sub-assembly (DPF catalyst)

    		 Catalyst Record Clear

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

    • DTC is output

      for 1AD-FTV

    • Injector assembly

    • Injector Compensation

    • Pilot Quantity Learning

    		 DTC is output.

      for 1AD-FTV

    • ECM

    		 Register VIN DTC P0630 is input

      for 1AD-FTV

    • Diesel throttle body assembly

    • Electric EGR control valve assembly

    • Turbocharger sub-assembly

    		 ECD System initialization Engine start

      for 2AD-FHV

    • ECM

    • Learning Values Save

    • Learning Values Write

    		 Engine start

      for 2AD-FHV

    • Engine assembly

    • Clear Crank Time Compensation Data

    • Input Injector Compensation Code

    • Pilot Quantity Learning

    • Engine starting

    • DTC is output

      for 2AD-FHV

    • No. 1 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

    • DTC is output

      for 2AD-FHV

    • Air fuel ratio sensor

    		 A/F Sensor Compensation Reset

    • EGR volume is affected

    • DTC is output.

      for 2AD-FHV

    • Supply pump assembly

    • Suction control valve

    		 Supply Pump Initialization

    • Engine start

    • DTC is output
    Exhaust manifold converter sub-assembly (DPNR catalyst) Clear DPF Thermal Deterioration Data

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

    • DTC is output

      for 2AD-FHV

    • Injector assembly

    • Input Injector Compensation Code

    • After that perform the Pilot Quantity Learning

    		 DTC is output.

      for 2AD-FHV

    • ECM

    		 Register VIN DTC P0630 is input

      for 2AD-FHV

    • Diesel throttle body assembly

    • Electric EGR control valve assembly

    		 ECD System initialization Engine start

      for 2AD-FTV (for CCo)

    • ECM

    • Learning Values Save

    • Learning Values Write

    		 Engine start

      for 2AD-FTV (for CCo)

    • Engine assembly

    • Clear Crank Time Compensation Data

    • Input Injector Compensation Code

    • Pilot Quantity Learning

    • Engine starting

    • DTC is output

      for 2AD-FTV (for CCo)

    • No. 1 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

    • DTC is output

      for 2AD-FTV (for CCo)

    • Supply pump assembly

    • Suction control valve

    		 Supply Pump Initialization

    • Engine start

    • DTC is output

      for 2AD-FTV (for CCo)

    • Injector assembly

    • Input Injector Compensation Code

    • After that perform the Pilot Quantity Learning

    		 DTC is output.

      for 2AD-FTV (for CCo)

    • ECM

    		 Register VIN DTC P0630 is input

      for 2AD-FTV (for CCo)

    • Diesel throttle body assembly

    • Electric EGR control valve assembly

    		 ECD System initialization Engine start.

      for 2AD-FTV (for DPF)

    • ECM

    • Learning Values Save

    • Learning Values Write

    		 Engine start

      for 2AD-FTV (for DPF)

    • Engine assembly

    • Clear Crank Time Compensation Data

    • Input Injector Compensation Code

    • Pilot Quantity Learning

    • Engine starting

    • DTC is output

      for 2AD-FTV (for DPF)

    • No. 1 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

    • DTC is output

      for 2AD-FTV (for DPF)

    • Air fuel ratio sensor

    		 A/F Sensor Compensation Reset

    • EGR volume is affected

    • DTC is output.

      for 2AD-FTV (for DPF)

    • Supply pump assembly

    • Suction control valve

    		 Supply Pump Initialization

    • Engine start

    • DTC is output

      for 2AD-FTV (for DPF)

    • Exhaust manifold converter sub-assembly (DPF catalyst)

    		 Clear DPF Thermal Deterioration Data

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

    • DTC is output

      for 2AD-FTV (for DPF)

    • Injector assembly

    • Input Injector Compensation Code

    • After that perform the Pilot Quantity Learning

    		 DTC is output.

      for 2AD-FTV (for DPF)

    • ECM

    		 Register VIN DTC P0630 is input

      for 2AD-FTV (for DPF)

    • Diesel throttle body assembly

    • Electric EGR control valve assembly

    		 ECD System initialization Engine start

      for 2AR-FE (w/ Canister Pump Module)

    • ECM

    		 Register VIN DTC P0630 is input

      for 2AR-FE (w/o Canister Pump Module)

    • ECM

    		 Register VIN DTC P0630 is input

      for 2AR-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

    • Heated oxygen sensor

    • Engine coolant temperature sensor

    • Spark plug

    • Ignition coil assembly

    • Air leaks from intake system

    • Gas leaks from exhaust system

    • Knock control sensor

    		 Initialization Engine control system

      for 3ZR-FAE

    • ECM

    		 Register VIN DTC P0630 is input

      for 3ZR-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 sub-assembly

    • 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 sensor

    		 Inspection after repair Poor idle, engine starting, etc.

      for 3ZR-FE

    • ECM

    		 Register VIN DTC P0630 is input.

      for 3ZR-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

    • Engine coolant temperature sensor

    • Spark plug

    • Ignition coil assembly

    • Air leaks from intake system

    • Gas leaks from exhaust system

    • Knock sensor

    		 Inspection after repair Poor idle, engine starting, etc.

    • Lane departure warning camera

    • Windshield glass

    		 Adjust lane departure warning camera DTCs are output
    Engine stop and start ECU

    • Clear the number of starter operations

    • Reset air conditioning information

    • Learning of air conditioning information

    • Clear the zero point calibration data

    • Perform zero point calibration of the deceleration sensor

    • Clear the integrated current value

    		 Stop and start system
    Starter assembly (w/ Stop and Start System) Clear the number of starter operations Stop and start system
    Air conditioning amplifier assembly Reset air conditioning information Stop and start system

      for U660F

    • Automatic transaxle assembly

    • Reset memory

    • Input transaxle compensation code into TCM

    • Perform road test to allow TCM to learn

    • Large shift shock

    • The deterioration of fuel efficiency

      for U660F

    • Valve body assembly

    • Shift solenoid valve SL3 and/or SL4

    • Reset memory

    • Initialize transaxle compensation code

    • Perform road test to allow TCM to learn

    • Large shift shock

    • The deterioration of fuel efficiency

      for U660F

    • Shift solenoid valve SL1 and/or SL2

    		 Perform road test to allow TCM to learn

    • Large shift shock

    • The deterioration of fuel efficiency

      for U660F

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

    		 Possible

    • Reset memory

    • Input Transaxle compensation code (Into the new TCM)

    • Perform road test to allow TCM to learn

    • Large shift shock

    • The deterioration of fuel efficiency
    Impossible

    • Reset memory

    • Initialize transaxle compensation code

    • Perform road test to allow TCM to learn

    • Large shift shock

    • The deterioration of fuel efficiency

      for U760E

    • Automatic transaxle assembly

    • Reset memory

    • Input transaxle compensation code into ECM

    • Perform road test to allow ECM to learn

    • Large shift shock

    • The deterioration of fuel efficiency

      for U760E

    • Valve body assembly

    • Shift solenoid valve SL3 and/or SL4

    • Reset memory

    • Initialize transaxle compensation code

    • Perform road test to allow ECM to learn

    • Large shift shock

    • The deterioration of fuel efficiency

      for U760E

    • Shift solenoid valve SL1 and/or SL2

    		 Perform road test to allow ECM to learn

    • Large shift shock

    • The deterioration of fuel efficiency

      for U760E

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

    		 Possible

    • Reset memory

    • Input Transaxle compensation code (Into the new ECM)

    • Perform road test to allow ECM to learn

    • Large shift shock

    • The deterioration of fuel efficiency
    Impossible

    • Reset memory

    • Initialize transaxle compensation code

    • Perform road test to allow ECM to learn

    • Large shift shock

    • The deterioration of fuel efficiency

      for U760F

    • Automatic transaxle assembly

    • Reset memory

    • Input transaxle compensation code into ECM

    • Perform road test to allow ECM to learn

    • Large shift shock

    • The deterioration of fuel efficiency

      for U760F

    • Valve body assembly

    • Shift solenoid valve SL3 and/or SL4

    • Reset memory

    • Initialize transaxle compensation code

    • Perform road test to allow ECM to learn

    • Large shift shock

    • The deterioration of fuel efficiency

      for U760F

    • Shift solenoid valve SL1 and/or SL2

    		 Perform road test to allow ECM to learn

    • Large shift shock

    • The deterioration of fuel efficiency

      for U760F

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

    		 Possible

    • Reset memory

    • Input Transaxle compensation code (Into the new ECM)

    • Perform road test to allow ECM to learn

    • Large shift shock

    • The deterioration of fuel efficiency
    Impossible

    • Reset memory

    • Initialize transaxle compensation code

    • Perform road test to allow ECM to learn

    • Large shift shock

    • The deterioration of fuel efficiency

      for K111

    • Continuously variable transaxle assembly

    • ECM

    • Oil pressure sensor

    • Yaw rate and acceleration sensor (Airbag sensor assembly) (w/ VSC)

    • Decelerration sensor (w/o VSC)

    • Skid control ECU (Brake acutuator assembly) (w/o VSC)

    • Reset memory

    • Deceleration sensor zero point calibration

    • CVT oil pressure calibration

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

    • Deterioration of fuel efficiency

      for K111F

    • Continuously variable transaxle assembly

    • ECM

    • Oil pressure sensor

    • Yaw rate and acceleration sensor (Airbag sensor assembly) (w/ VSC)

    • Decelerration sensor (w/o VSC)

    • Skid control ECU (Brake acutuator assembly) (w/o VSC)

    • Reset memory

    • Deceleration sensor zero point calibration

    • CVT oil pressure calibration

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

    • Deterioration of fuel efficiency

    • 4WD ECU assembly

      Tech Tips

      When replacing the 4WD ECU assembly with a new one, it is not necessary toperform initialization.

    • Acceleration sensor (airbag sensor assembly) (w/ VSC)

    • Deceleration sensor (w/o VSC)

    		 Clear zero point calibration data Dynamic torque control 4WD/AWD system

    • Tire pressure warning ECU and receiver

    • Tire pressure warning valve and transmitter

    • Transmitter ID registration

    • Initialization

    		 Tire pressure warning system
    Skid control ECU (brake actuator assembly) Yaw rate and acceleration sensor zero point calibration. Vehicle stability control system
    Yaw rate and acceleration sensor (airbag sensor assembly)

    • Clearing zero point calibration data.

    • Yaw rate and acceleration sensor zero point calibration.

    • Acceleration sensor zero point calibration and CVT oil pressure calibration (for continuously variable transaxle).

    		 Vehicle stability control system
    Wheel alignment adjustment

    • Clearing zero point calibration data.

    • Yaw rate and acceleration sensor zero point calibration.

    		 Vehicle stability control system
    Power steering ECU assembly Assist map writing Power steering system
    Electric motor power steering components Assist map writing Steering effort is different between turning steering wheel to left and right
    Navigation ECU sub-assembly Calibration Parking assist monitor system
    Spiral with sensor cable sub-assembly

    • Steering angle neutral point(Initialize parking assist monitorsystem)

    • Steering angle setting
    Suspension, tires, etc. Television camera assembly optical axis (Back camera position setting)
    Television camera assembly

      w/ Entry and Start System

    • Certification ECU (smart key ECUassembly)

    • ID code box (immobiliser codeECU)*1

    • ECM

    • Steering lock ECU (steering lockactuator assembly)

    • Electrical key transmitter sub-assembly

    		 Registration

    • Wireless door lock operation

    • Entry operation

    • Engine starting

    • Steering unlock

      w/o Entry and Start System

    • Transponder key ECU assembly

    • ECM

    • Electrical key transmitter sub-assembly

    		 Registration Engine starting

      w/o Entry and Start System

    • Door control transmitter

    • Door control receiver

    		 Register recognition code Wireless door lock operation

      w/ Blocking System

    • Instrument panel integration antena assembly

    • Telephone transceiver assembly

    • Mayday battery

    		 Registration Engine starting

      for Automatic Air Condition 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

    • No. 1 Blower mode damper servo sub-assembly

    		 Initialization servo motor Initialization servo motor

      w/ Jam Protection Function

    • Power window regulator motor assembly

    • Power window regulator sub-assembly

    • Door glass

    • Door glass run

    		 Initialize power window control system

    • Auto up/down function

    • Jam protection function

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

    • Sliding roof glass sub-assembly

    • Sliding roof drive cable sub-assembly

    		 Initialize sliding roof ECU (pulse sensor initial position setting)

    • Automatic slide open/close and tilt up/down function of sliding roof

    • Jam protection function

    • Operation function after ignition off

    • Sliding roof open warning
    Back door lock assembly Initialize back door closer system Back door lock operation
    Multiplex network door ECU Initialize power back door system Power back door system

    • Height control sensor

    • Height leveling ECU

    		 Height leveling ECU initialization Height leveling function

    • *1: w/ Multi-information Display (Dot Display Type)