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.
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
ECM
Perform Vehicle Identification Number (VIN) registration
MIL comes on
-
for SFI system
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
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 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
Resolver learning
Initialize resolver
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*2
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*2
Windshield glass*2
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
for Registration
for Initialization
Skid control ECU (Brake booster with master cylinder assembly)
Brake actuator assembly
Bleed air
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.
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
for Initialization
for Calibration
Brake pedal stroke sensor assembly
Brake pedal
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.
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)
Clear zero point calibration data.
Perform yaw rate and acceleration sensor zero point calibration.
Parking Brake ECU assembly
Operate the electric parking brake switch assembly
Parking brake indicator light (red) blinks when the power switch is first turned on (IG)
-
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 panoramic view monitor system)
Simple Intelligent Parking Assist System
-
Toyota parking assist-sensor system
Clearance warning ECU assembly
Steering angle neutral point
Registration of bumper type
Simple Intelligent Parking Assist System
Toyota parking assist-sensor system
-
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)
Steering lock ECU (steering lock actuator)
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
Steering lock system
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
No. 1 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
-
Rear height control sensor sub-assembly LH
Suspension, tires, etc.*1
Initialize headlight ECU sub-assembly LH
Automatic headlight beam level control system
-
Headlight ECU sub-assembly LH
Synchronize vehicle information
Initialize headlight ECU sub-assembly LH
Swing grill actuator assembly*3
Radiator shutter sub-assembly*3
Change grille shutter control modes and/or perform initialization
Grille shutter system
-
*1: The vehicle height changes because of suspension or tire replacement.
*2: w/ Pre-collision System
*3: w/ Grille shutter System