2GR-FKS (ENGINE MECHANICAL): ENGINE UNIT: REMOVAL; 2019 - 2021 MY Avalon [04/2018

Last Modified: 08-21-2023	6.11:8.1.0	Doc ID: RM100000001AYW4
Model Year Start: 2019	Model: Avalon	Prod Date Range: [04/2018 - 08/2021]
Title: 2GR-FKS (ENGINE MECHANICAL): ENGINE UNIT: REMOVAL; 2019 - 2021 MY Avalon [04/2018 - 08/2021]

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during engine unit removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed	Link
Battery terminal is disconnected/reconnected	Perform steering sensor zero point calibration	Lane departure alert system (w/ Steering Control)
		Pre-collision system
		Intelligent Clearance Sonar System*1
		Lighting System (for Gasoline Model with Cornering Light)
	Memorize steering angle neutral point	Parking Assist Monitor System
	Memorize steering angle neutral point	Panoramic View Monitor System
Replacement of ECM	Vehicle Identification Number (VIN) registration	MIL comes on
Replacement of ECM	ECU communication ID registration (Immobiliser system)	Engine start function
Replacement of throttle body with motor assembly Cleaning the deposits from the throttle body with motor assembly Replacement of engine assembly Replacement of cylinder head sub-assembly Replacement of camshaft (for intake or exhaust camshaft) Replacement of camshaft timing gear assembly Replacement of camshaft timing exhaust gear assembly Replacement of fuel injector assembly (for port injection) Replacement of fuel injector assembly (for direct injection) Replacement of fuel pump assembly (for high pressure side) Replacement of engine coolant temperature sensor Replacement of spark plug Replacement of ignition coil assembly Air leaks from intake system Gas leak from exhaust system is repaired Replacement of knock control sensor	Inspection after repair	Poor idle, etc. Engine start function, etc.
Replacement of automatic transaxle assembly	Perform reset memory Input transaxle compensation code into ECM Perform road test to allow ECM to learn	Large shift shock Deterioration of fuel efficiency	for Initialization for Registration
Replacement of ECM (If transaxle compensation code read from ECM)	Perform reset memory*2 Transfer transaxle compensation code Perform road test to allow ECM to learn
Replacement of ECM (If transaxle compensation code not read from ECM)	Perform reset memory*2 Reset transaxle compensation code Perform road test to allow ECM to learn
Replacement of automatic transaxle fluid	ATF thermal degradation estimate reset	The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly
Replacement of ECM	Code registration (Smart Key System (for Start Function))	Wireless Door Lock Control System Smart Key System (for Entry Function) Smart Key System (for Start Function) Steering lock function
Suspension, tires, etc.	Measure ultrasonic sensor detection angle Ultrasonic sensor detection angle registration	Intelligent Clearance Sonar System Intuitive Parking Assist System
	Rear television camera assembly optical axis adjustment (Back camera position setting)	Parking Assist Monitor System	for Initialization for Calibration
	Parking assist ECU initialization Adjust steering angle Television camera assembly optical axis adjustment (Back camera position setting)	Panoramic View Monitor System	for Initialization for Calibration
	Perform headlight ECU sub-assembly LH initialization	Lighting system (for Gasoline Model with Cornering Light)
Front wheel alignment adjustment	Perform system variant learning and acceleration sensor zero point calibration.	VSC is disabled or malfunctions DTCs are output Slip indicator light illuminates ABS warning light illuminates

*1: When performing learning using the Techstream.
Click here
*2: Not necessary when ECM replaced with new one.

PROCEDURE

1. REMOVE KNOCK CONTROL SENSOR

Click here

2. REMOVE SENSOR WIRE

(a) Disengage the 2 clamps and remove the bolt and sensor wire.

3. REMOVE IGNITION COIL ASSEMBLY

Click here

4. REMOVE VACUUM PUMP ASSEMBLY

Click here

5. REMOVE NO. 3 WATER BY-PASS HOSE

(a) Slide the clip and remove the No. 3 water by-pass hose from the water inlet pipe.

6. REMOVE NO. 2 WATER BY-PASS HOSE

(a) Slide the clip and remove the No. 2 water by-pass hose from the water outlet.

7. REMOVE VENTILATION HOSE

(a) Slide the clip and remove the ventilation hose from the PCV valve (ventilation valve sub-assembly).

8. REMOVE NO. 2 VENTILATION HOSE

(a) Slide the clip and remove the No. 2 ventilation hose from the cylinder head cover sub-assembly.

9. REMOVE V-RIBBED BELT

Click here

10. REMOVE GENERATOR ASSEMBLY

Click here

11. REMOVE COMPRESSOR ASSEMBLY WITH MAGNETIC CLUTCH

Click here

12. REMOVE NO. 1 COMPRESSOR MOUNTING BRACKET

(a) Remove the 2 bolts and No. 1 compressor mounting bracket from the cylinder block sub-assembly.

13. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY

Click here

14. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY

(a) Remove the 2 bolts and V-ribbed belt tensioner assembly.

15. REMOVE WATER PUMP PULLEY

Click here

16. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE

(a) Remove the engine oil level dipstick from the engine oil level dipstick guide.

(b) Remove the bolt and engine oil level dipstick guide from the camshaft housing sub-assembly LH and oil pan sub-assembly.

17. REMOVE DRIVE SHAFT BEARING BRACKET

(a) Remove the 3 bolts and drive shaft bearing bracket from the cylinder block sub-assembly.

18. REMOVE WIRE HARNESS CLAMP BRACKET

(a) Remove the bolt and wire harness clamp bracket from the camshaft housing sub-assembly LH.

(b) Remove the bolt and wire harness clamp bracket from the camshaft housing sub-assembly.

19. REMOVE WATER FILLER BRACKET

(a) Remove the 2 bolts and water filler bracket from the camshaft housing sub-assembly LH.

20. REMOVE ENGINE COVER BRACKET

(a) Remove the bolt and engine cover bracket from the cylinder head cover sub-assembly LH.