M20A-FKS (ENGINE MECHANICAL): CYLINDER HEAD GASKET: REMOVAL; 2023 MY Corolla Corolla Hatchback [09/2022

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM1000000027019
Model Year Start: 2023	Model: Corolla Hatchback	Prod Date Range: [09/2022 - 11/2022]
Title: M20A-FKS (ENGINE MECHANICAL): CYLINDER HEAD GASKET: REMOVAL; 2023 MY Corolla Corolla Hatchback [09/2022 - 11/2022]

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 cylinder head gasket removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed	Link
1: w/ Steering Lock Function 2: w/o Smart Key System 3: w/ Smart Key System 4: It is only necessary TMMMS Made Models *5: If matchmarks were not placed when removing parts related to steering operation, perform end position initial setting.
Replacement of ECM	Vehicle Identification Number (VIN) registration	MIL comes on
	for TMC Made Update ECU security key	Vehicle Control History (RoB) are stored
	ECU communication ID registration (Immobiliser system)	Engine start function	for TMC Made for TMMMS Made
Replacement of ECM*3	Code registration (Smart Key System (for Gasoline Model, Start Function))	Wireless Door Lock Control System (for Gasoline Model with Smart Key System) Smart Key System (for Gasoline Model, Entry Function) Smart Key System (for Gasoline Model, Start Function) Steering lock function*1	for TMC Made for TMMMS Made
Replacement of ECM*2	Code registration (Immobiliser system)	Engine start Telematics System
Gas leak from exhaust system is repaired Replacement of throttle body with motor assembly Replacement of cam timing control motor with EDU assembly Removal and installation of a cam timing control motor with EDU assembly Replacement of camshaft timing gear assembly Removal and installation of a camshaft timing gear assembly Replacement of cylinder head sub-assembly Replacement of camshaft (for intake or exhaust camshaft) Replacement of camshaft timing exhaust gear assembly Replacement of port fuel injector assembly Replacement of direct fuel injector assembly Replacement of fuel pump assembly (for high pressure side) Replacement of spark plug Replacement of ignition coil assembly Replacement of EGR valve assembly Replacement of knock control sensor Replacement of air fuel ratio sensor (sensor 2)	Inspection After Repair	Poor idle, etc. Engine start function, etc.
Replacement of continuously variable transaxle assembly	Input transaxle compensation code into TCM Perform reset memory Deceleration sensor zero point calibration*4 CVT oil pressure calibration Perform road test to allow TCM to learn	Large shift shock Deterioration of fuel efficiency	for K120 Initialization for K120 Registration
Replacement of ECM	Perform reset memory CVT oil pressure calibration Perform road test to allow TCM to learn	Large shift shock Deterioration of fuel efficiency	for K120 Initialization for K120 Registration
Front wheel alignment adjustment	for TMC Made Perform "Reset Memory" Perform "Calibration"	VSC is disabled or malfunctions DTCs are output Slip indicator light illuminates ABS warning light illuminates	w/ Electric Parking Brake System: w/o Electric Parking Brake System:
Front wheel alignment adjustment	for TMMMS Made Perform "Reset Memory" Perform acceleration sensor zero point calibration and store system information memorization	VSC is disabled or malfunctions DTCs are output Slip indicator light illuminates ABS warning light illuminates	w/ Electric Parking Brake System: w/o Electric Parking Brake System:
CVT fluid	ATF thermal degradation estimate reset	The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly
Steering gear assembly5 No. 2 steering intermediate shaft assembly5	for TMC Made End position initial setting	-

NOTICE:

This procedure includes the removal of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts.

Click here

HINT:

When the cable is disconnected / reconnected to the battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

Learning completes when vehicle is driven

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
Front Camera System (for TMC Made)	Drive the vehicle straight ahead at 15 km/h (9 mph) or more for 1 second or more.
Pre-collision System (for TMMMS Made)	Drive the vehicle straight ahead at 35 km/h (22 mph) or more for 5 seconds or more.
Lane Tracing Assist System (for TMMMS Made)
Lane Departure Alert System (for TMMMS Made)

Learning completes when vehicle is operated normally

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
*1: for Hatchback
Power Door Lock Control System Back door opener*1	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.

PROCEDURE

1. INSTALL ENGINE ASSEMBLY TO ENGINE STAND

Click here

2. REMOVE ENGINE HANGER

Click here

3. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY

Click here

4. REMOVE NO. 2 WATER BY-PASS PIPE SUB-ASSEMBLY

Click here

5. REMOVE FLOW SHUTTING VALVE (WATER BY-PASS HOSE ASSEMBLY)

Click here

6. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR

for Double Wishbone Type Suspension: Click here

for Torsion Beam Type Suspension: Click here

7. REMOVE EXHAUST MANIFOLD (TWC: Front Catalyst)

for Double Wishbone Type Suspension: Click here

for Torsion Beam Type Suspension: Click here

8. REMOVE THROTTLE BODY WITH MOTOR ASSEMBLY

Click here

9. REMOVE THROTTLE BODY GASKET

Click here

10. REMOVE EGR COOLER ASSEMBLY

Click here

11. REMOVE NO. 1 EGR PIPE SUB-ASSEMBLY

Click here

12. REMOVE EGR VALVE ASSEMBLY

Click here

13. REMOVE NO. 3 WATER BY-PASS PIPE

Click here

14. REMOVE INTAKE MANIFOLD STAY

Click here

15. DISCONNECT NO. 1 FUEL VAPOR FEED HOSE

Click here

16. REMOVE INTAKE MANIFOLD

Click here

17. REMOVE NO. 1 INTAKE MANIFOLD TO HEAD GASKET

Click here

18. DISCONNECT FUEL TUBE SUB-ASSEMBLY

Click here

19. REMOVE NO. 1 FUEL PIPE SUB-ASSEMBLY

Click here

20. REMOVE FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY (for High Pressure)

Click here

21. REMOVE NO. 1 WATER BY-PASS HOSE ASSEMBLY

Click here

22. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY

Click here

23. REMOVE FUEL DELIVERY SPACER

Click here

24. REMOVE INJECTOR VIBRATION INSULATOR

Click here

25. REMOVE NO. 5 ENGINE WIRE

Click here

26. REMOVE PORT FUEL INJECTOR ASSEMBLY

Click here

27. REMOVE FUEL DELIVERY PIPE

Click here

28. REMOVE DIRECT FUEL INJECTOR ASSEMBLY

Click here

29. REMOVE FUEL INJECTOR SEAL

Click here

30. REMOVE IGNITION COIL ASSEMBLY

Click here

31. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE

Click here

32. REMOVE VACUUM SURGE TANK

Click here

33. REMOVE OIL PRESSURE CONTROL VALVE ASSEMBLY

Click here

34. REMOVE CAMSHAFT POSITION SENSOR (for Intake Side)

Click here

35. REMOVE CAMSHAFT POSITION SENSOR (for Exhaust Side)

Click here

36. REMOVE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY

Click here

37. REMOVE CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY

Click here

38. REMOVE CAM TIMING CONTROL MOTOR O-RING

Click here

39. REMOVE VACUUM PUMP ASSEMBLY

Click here

40. REMOVE CRANKSHAFT PULLEY ASSEMBLY

Click here

41. REMOVE WATER OUTLET

Click here

42. REMOVE WATER BY-PASS OUTLET SUB-ASSEMBLY

Click here

43. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY

Click here

44. REMOVE SPARK PLUG TUBE GASKET

Click here

45. REMOVE ENGINE MOUNTING BRACKET RH

Click here

46. REMOVE NO. 2 TIMING CHAIN COVER ASSEMBLY

Click here

47. REMOVE TIMING CHAIN COVER OIL SEAL

Click here

48. SET NO. 1 CYLINDER TO TDC (COMPRESSION)

Click here

49. REMOVE OIL PUMP DRIVE CHAIN SUB-ASSEMBLY

Click here

50. REMOVE CAMSHAFT TIMING GEAR ASSEMBLY

Click here

51. REMOVE CHAIN SUB-ASSEMBLY

Click here

52. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY

Click here

53. REMOVE CHAIN TENSIONER SLIPPER

Click here

54. REMOVE NO. 1 CHAIN VIBRATION DAMPER

Click here

55. REMOVE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY

Click here

56. REMOVE TIMING CHAIN COVER ASSEMBLY

Click here

57. REMOVE FUEL PUMP LIFTER GUIDE

Click here

58. REMOVE CAMSHAFT HOUSING SUB-ASSEMBLY

Click here

59. REMOVE CAMSHAFT BEARING CAP

Click here

60. REMOVE INTAKE CAMSHAFT SUB-ASSEMBLY

Click here

61. REMOVE EXHAUST CAMSHAFT SUB-ASSEMBLY

Click here

62. REMOVE NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY

Click here

63. REMOVE VALVE LASH ADJUSTER ASSEMBLY

Click here

64. REMOVE CYLINDER HEAD SUB-ASSEMBLY

Click here

65. REMOVE CYLINDER HEAD GASKET

(a) Remove the cylinder head gasket from the cylinder block sub-assembly.

66. INSPECT CYLINDER HEAD SET BOLT

Click here

67. INSPECT CYLINDER HEAD SUB-ASSEMBLY

Click here

REMOVAL

CAUTION / NOTICE / HINT

Necessary Procedures After Parts Removed/Installed/Replaced

for TMC Made

for TMC Made

for TMMMS Made

for TMC Made

Learning completes when vehicle is driven

Learning completes when vehicle is operated normally

PROCEDURE