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

      for SFI system (w/ Canister Pump Module)

    • ECM

    		 Perform Vehicle Identification Number (VIN) registration MIL comes on -

      for SFI system (w/o Canister Pump Module)

    • ECM

    		 Perform Vehicle Identification Number (VIN) or frame number registration MIL comes on -

      for SFI system (w/ Canister Pump Module)

    • 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

    • 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

    • EGR valve 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 SFI system (w/o Canister Pump Module)

    • 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

    • 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

    • EGR valve assembly

    • Air leaks from intake system

    • Gas leaks from exhaust system

    • Knock control sensor

    		 Inspection after repair

    • Poor idle, etc.

    • Engine start function, etc.

    		 -
    Inverter with converter assembly Resolver learning

    • DTCs are stored

    • Slight vibration at a vehicle speed of 5 km/h (3 mph) or less

    • Shock or vibration during acceleration

    		 -

    • Hybrid vehicle transaxle assembly

    • Motor resolver (Motor revolution sensor)

    • Generator resolver (Generator revolution sensor)

    • Resolver learning

    • Initialize resolver
    Disassembly/reassembly of hybrid vehicle transaxle assembly
    HV battery Battery status info update HV battery status information cannot be updated -
    Hybrid battery terminal block Perform high voltage fuse accumulated load history reset DTCs are stored
    Millimeter wave radar sensor assembly Adjust millimeter wave radar sensor assembly

    • Dynamic radar cruise control system

    • Pre-crash safety system

    • Forward recognition camera system

    • Lane departure alert system (w/ Steering Control)

    • Road sign assist system

    		 -

    • Forward recognition camera

    • Windshield glass

    		 Adjust forward recognition camera

    • Dynamic radar cruise control system

    • Lane departure alert system (w/ Steering Control)

    • Pre-crash safety system

    • Forward recognition camera system

    • Automatic high beam system

    		 -

    • Tire pressure warning ECU and receiver (Electrical key and tire pressure monitoring system receiver assembly)

    • 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 booster with master cylinder assembly)

    • Brake actuator assembly

    1. Bleed air

    2. Clear the data stored during previous linear solenoid valve offset learning, ABS holding solenoid valve learning, brake pedal stroke sensor assembly zero point calibration and system information memorization.

    3. Perform linear solenoid valve offset learning, ABS holding solenoid valve learning, brake pedal stroke sensor assembly zero point calibration and system information memorization.

    • DTCs are stored

    • ABS warning light illuminates

    • Brake warning light / yellow (minor malfunction) illuminates

    • Slip indicator light illuminates

    • VSC disabled or malfunctions

    		 -

    • Brake pedal stroke sensor assembly

    • Brake pedal

    1. Clear the data stored during previous linear solenoid valve offset learning, ABS holding solenoid valve learning, brake pedal stroke sensor assembly zero point calibration and system information memorization.

    2. Perform linear solenoid valve offset learning, ABS holding solenoid valve learning, brake pedal stroke sensor assembly zero point calibration and system information memorization.

    • Skid control ECU (Brake booster with master cylinder assembly)

    • Yaw rate and acceleration sensor (Airbag ECU assembly)

    1. Clear zero point calibration data.

    2. Perform yaw rate and acceleration sensor zero point calibration.
    Power steering ECU assembly

    • Torque sensor zero point calibration

    • Assist map writing

    • DTCs are stored

    • EPS warning light illuminates

    		 -
    Electric power steering column sub-assembly Torque sensor zero point calibration
    Steering sensor Steering angle neutral point (Initialize intelligent clearance sonar system)

    • Intelligent clearance sonar system

    • Simple intelligent parking assist system

    • Parking assist monitor system

    		 -
    Steering angle setting Parking assist monitor system -

    • Front bumper assembly

    • Rear bumper assembly

    • Ultrasonic sensor detection angle

    • Ultrasonic sensor detection angle registration

    • Intelligent clearance sonar system

    • Simple intelligent parking assist system

    		 -
    Suspension, tires, etc.*1

    • Ultrasonic sensor detection angle

    • Ultrasonic sensor detection angle registration

    • Intelligent clearance sonar system

    • Simple intelligent parking assist system

    		 -
    Rear television camera assembly optical axis (Back camera position setting) Parking assist monitor system -
    Rear television camera assembly Parking assist monitor system initialization Parking assist monitor system -
    Clearance warning ECU assembly

    • Ultrasonic sensor detection angle

    • Steering angle neutral point

    • Registration of bumper type

    • Ultrasonic sensor detection angle registration

    • Intelligent clearance sonar system

    • Toyota parking assist-sensor system

    • Simple intelligent parking assist system

    		 -
    Ultrasonic sensor*2*3

    • Ultrasonic sensor detection angle

    • Ultrasonic sensor detection angle registration
    Blind spot monitor sensor Blind spot monitor beam axis adjustment DTCs are output -

    • Certification ECU (smart key ECU assembly)

    • ID code box (immobiliser code ECU)

    • Electrical key transmitter sub-assembly

    • Main body ECU (multiplex network body ECU)

    		 Perform code registration (Immobiliser system)

    • Entry and start system

    • Wireless door lock control system

    • Hybrid control system cannot be started

    		 See Service Bulletin for the registration method.
    Hybrid vehicle control ECU Perform code registration (Immobiliser system)

    • Entry and start system

    • Wireless door lock control system

    • Hybrid control system cannot be started
    Clear DTCs (Vehicle proximity notification system)*5 Vehicle proximity notification system -

    • Occupant detection ECU*4

    • Front passenger seat*4

    		 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)

    		 -

    • 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 damper servo sub-assembly

    • Air conditioning amplifier assembly

    		 Initialize servo motor (Air conditioning system) DTCs are stored -

    • Door window regulator assembly

    • Power window regulator motor assembly

    • Door glass

    • Door glass run

    		 Initialize power window control system

    • Auto up and down function

    • Jam protection function

    • Catch protection function

    • Remote control function

    • Key-linked function

    • Wireless transmitter-linked function

    • Key-off operation function

    • Window open warning function

    		 -

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

    • Sliding roof glass sub-assembly

    • Sliding roof drive cable sub-assembly

    • Sliding roof housing 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

    		 -

    • Rear height control sensor sub-assembly LH

    • Suspension, tires, etc.*1

    		 Initialize No. 1 headlight ECU sub-assembly LH Automatic headlight beam level control system -
    No. 1 headlight ECU sub-assembly LH

    • Synchronize vehicle information

    • Initialize No. 1 headlight ECU sub-assembly LH

    • Swing grill actuator assembly

    • Radiator shutter sub-assembly

    		 Change grille shutter control modes and/or perform initialization Grille shutter system -

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

    *2: If a front side ultrasonic sensor (LH, RH) is removed and installed or replaced, it is necessary to perform registration.

    *3: If a rear side ultrasonic sensor (LH, RH) is removed and installed or replaced, it is necessary to perform registration.

    *4: w/ Occupant Classification System

    *5: w/ Vehicle Proximity Notification System