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

    1. Learning values save

    2. Learning values write

    • Warning light comes on

    • Deterioration of fuel efficiency

    for 1ND-TV*9 Precaution

    for 1ND-TV*9 Initialization

    for 1ND-TV*9 Registration

    for 1ND-TV*10 Precaution

    for 1ND-TV*10 Initialization

    for 1ND-TV*10 Registration
    Injector assembly

    • Injector compensation

    • Pilot quantity learning values reset

    • Warning light comes on

    • Deterioration of fuel efficiency
    DPF catalyst DPF deterioration record clear

    • Warning light comes on

    • Deterioration of fuel efficiency
    Air fuel ratio sensor A/F sensor compensation reset

    • Warning light comes on

    • Deterioration of fuel efficiency
    Engine assembly

    • Injector compensation

    • Pilot quantity learning values reset

    • Warning light comes on

    • Deterioration of fuel efficiency

    • Diesel throttle body assembly

    • Electric EGR control valve assembly

    • Turbocharger sub-assembly

    		 ECD system initialization Engine start function

    • 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

    • No. 1 ignition coil

    • Air leaks from intake system

    • Gas leaks from exhaust system

    • Knock control sensor

    		 Inspection after repair

    • Poor idle, etc.

    • Engine start function, etc.

    		 for 1NR-FE
    Piston ring Clear heavy knock history - for 8NR-FTS

    • 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 (for low pressure side)

    • Fuel pump (for high pressure side)

    • 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, etc.

    • Engine start function, etc.

    • 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 control sensor

    		 Inspection after repair

    • Poor idle, etc.

    • Engine start function, etc.

    		 for 1ZR-FAE

    • 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 control sensor

    		 Inspection after repair

    • Poor idle, etc.

    • Engine start function, etc.

    for 1ZR-FE

    for 2ZR-FE
    ECM

    • Learning values save

    • Learning values write

    		 - for 1WW
    Injector assembly Injector compensation
    Fuel supply pump assembly Supply pump learning value reset
    Exhaust manifold converter sub-assembly (catalytic converter)

    • DPF history information reset

    • NOx storage catalyst learning value reset
    Air fuel ratio sensor O2 sensor learning value reset
    Mass air flow meter Air flow meter learning value reset
    EGR valve assembly EGR learning value reset
    Differential pressure sensor Differential pressure learning value reset
    Swirl control valve Swirl valve learning value reset
    Pressure discharge valve Fuel PCV compensation value reset
    Turbo pressure sensor assembly Upstream turbine pressure learning value reset
    Engine assembly Injector compensation
    Pre-crash safety city sensor

    1. Recognition camera/target position memory

    2. Recognition camera axis adjust

    • Lane departure alert system

    • Road Sign Assist System

    • Pre-crash safety system

    		 -
    Engine stop and start ECU*11

    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

    		 Stop and start system -
    Air conditioning amplifier assembly*11

    1. Reset air conditioning information

    2. Learning of air conditioning information

    Starter assembly*11

    Note

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

    		 Clear the number of starter operations
    Airbag sensor assembly*11

    1. Clear the zero point calibration data

    2. Perform zero point calibration of the deceleration sensor

    • Continuously variable transaxle assembly*11

    • CVT fluid*11

    		 Bleed the oil pump assembly with motor
    Battery*11

    • Clear the integrated current value

    • Switch battery type

    • Transaxle assembly

    • Transaxle parts (inside gear box)

    • TCM

    • Clutch actuator assembly

    • Clutch disc and clutch cover

    • Clutch release with bearing cylinder assembly

    • Flywheel

    • Crankshaft

    1. Initialization of multi-mode manual transaxle system [Tester display: Initialization of ECU]

    2. Learning of multi-mode manual transaxle system

    3. Synchronization position calibration

    		 Multi-mode manual transaxle system

    for Initialization

    for Calibration

    • Shift and select actuator

    • Shift stroke sensor

    • Select stroke sensor

    1. Initialization of multi-mode manual transaxle system [Tester display: Initialization of transmission]

    2. Learning of multi-mode manual transaxle system

    3. Synchronization position calibration

    		 Multi-mode manual transaxle system
    Clutch stroke sensor

    1. Initialization of multi-mode manual transaxle system [Tester display: Initialization of clutch]

    2. Learning of multi-mode manual transaxle system

    		 Multi-mode manual transaxle system

    • Continuously variable transaxle assembly

    • ECM

    • Oil pressure sensor

    • Airbag sensor assembly (Yaw rate and acceleration sensor)

    1. Reset memory

    2. Deceleration sensor zero point calibration

    3. CVT oil pressure calibration

    		 Deterioration of fuel efficiency

    for K311

    for K313*1

    for K313*2
    CVT fluid*2 Perform ATF thermal degradation estimate reset - -

    • Tire pressure warning ECU and receiver

    • Tire pressure warning valve and transmitter

    • Transmitter ID registration

    • Initialization

    • When DTC detection conditions of "transmitter ID not received" are met, TPWS indicator blinks for 1 minute, and then illuminates

    • Tire pressure warning function

    for Initialization

    for Registration
    Skid control ECU (Brake actuator assembly) (w/ VSC) Perform system variant learning

    • Slip indicator light illuminated

    • DTC C1288 (Error in Matching of ECUs) stored

    		 -
    Power steering ECU assembly

    • Torque sensor zero point calibration

    • Assist map writing

    • EPS warning light illuminated

    • EPS control

    		 -
    Electric power steering column sub-assembly Torque sensor zero point calibration Steering effort different between turning steering wheel left and right
    Telematics transceiver*12 Register vehicle information Emergency call service -
    Mobilephone battery*12 Reset mobilephone battery condition

    • Spiral cable with sensor sub-assembly*13

    • Clearance warning ECU assembly*13

    		 Initialize simple intelligent parking assist system Simple intelligent parking assist system -
    ECM Vehicle Identification Number (VIN) or frame number registration

    • MIL comes on

    • DTCs are output

    for 1ND-TV*9

    for 1NR-FE

    for 8NR-FTS

    for 1ZR-FAE

    for 1ZR-FE

    for 2ZR-FE

    for 1WW
    Heavy Knock History - for 8NR-FTS
    ECU communication ID registration (Immobiliser system) Engine start See Service Bulletin for the registration method.

    • Certification ECU (smart key ECU assembly)*3

    • Steering lock ECU (steering lock actuator assembly)*3

    • Electrical key transmitter sub-assembly*3

    • ID code box (immobiliser code ECC)

    		 Code registration (Immobiliser system)

    • Wireless door lock control system

    • Entry and Smart System

    • Engine start

    • Steering lock system

    • Transponder key ECU assembly*4

    • Key*4

    		 Code registration (Immobiliser system) Engine start

    • Door control transmitter assembly*4

    • Door control receiver

    		 Code registration (Wireless door lock system) Wireless door lock control system -

    • Air mix damper servo sub-assembly (for driver side)*7

    • Air mix damper servo sub-assembly (for front passenger side)*7

    • Air mix damper servo sub-assembly*8

    • Mode damper servo sub-assembly

    • Recirculation damper servo sub-assembly

    		 Initialization servo motor (for Automatic air conditioning system) DTCs are output -

    • Roof sunshade ECU (sliding roof drive gear assembly)

    • Sliding roof housing sub-assembly

    		 Initialize roof sunshade system

    • Auto open and close Function

    • Jam protection function

    		 -

    • Front door window regulator assembly (for driver door)*6

    • Door window regulator sub-assembly*5

    • Door glass

    • Door glass run

    		 Initialize power window control system

    • Auto up and down function

    • Jam protection function

    • Remote control function*5

    • Key-off operation function

    		 -

    • Headlight leveling ECU assembly*14

    • Rear height control sensor sub-assembly*14

    		 Perform headlight leveling ECU assembly initialization Automatic headlight beam level control system -

    • Headlight swivel ECU assembly*15

    • Rear height control sensor sub-assembly*15

    		 Perform headlight swivel ECU assembly initialization Automatic headlight beam level control system -

    • *1: for 8NR-FTS

    • *2: for 1ZR-FAE

    • *3: w/ Entry and Start System

    • *4: w/o Entry and Start System

    • *5: for Models with Jam Protection Function on 4 Windows

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

    • *7: for Dual Type

    • *8: for Single Type

    • *9: w/ Glow Plug Controller

    • *10: w/o Glow Plug Controller

    • *11: w/ Stop and Start System

    • *12: w/ Manual (SOS) Switch

    • *13: w/ Simple Intelligent Parking Assist System

    • *14: for Sedan

    • *15: except Sedan