Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Toyota Corolla Cross, 2024 Toyota Corolla Cross, and 2023 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.

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
Replacement of throttle body with motor assembly Replacement of cam timing control motor with EDU assembly Replacement of fuel pump assembly (for high pressure side) Replacement of cylinder head sub-assembly Replacement of ignition coil assembly Replacement of EGR valve assembly Removal and installation of a camshaft timing gear assembly Replacement of camshaft timing gear assembly Replacement of camshaft timing exhaust gear assembly Replacement of camshaft (for intake or exhaust camshaft) Gas leaks from exhaust system is repaired Replacement of port fuel injector assembly Replacement of direct fuel injector assembly Cleaning the deposits from the throttle body with motor assembly Removal and installation of a cam timing control motor with EDU assembly Removal and installation of a camshaft timing gear assembly	Inspection After Repair	Poor idle, etc. Engine start function, etc.	Refer to INITIALIZATION [11/2022 - ]

HINT:

When the cable is disconnected/reconnected to the auxiliary 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 Procedures are not Performed	Necessary Procedures	Link
Front Camera System	Drive the vehicle straight ahead at 15 km/h (10 mph) or more for 1 second or more.	Refer to INITIALIZATION [11/2022 - ]

Learning completes when vehicle is operated normally

Effect/Inoperative Function When Necessary Procedures are not Performed	Necessary Procedures	Link
Power door lock control system Back door opener	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.	Refer to INITIALIZATION [11/2022 - ]
Power back door system	Fully close the back door by hand. HINT: Initialization is not necessary if the above procedures are performed while the back door is closed.	Refer to INITIALIZATION [09/2021 - ]
Air conditioning system	After the ignition switch is turned to ON, the servo motor standard position is recognized.	-

COMPONENTS (REMOVAL)

Fig 1: Cylinder Head Gasket Removal Components (1 Of 7)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1	ENGINE ASSEMBLY TO ENGINE STAND	-	-	-	-
2	ENGINE HANGERS	-	-	-	-
3	FUEL HOSE BRACKET	23881B	-	-	-
4	NO. 1 WATER BY-PASS PIPE	16268	See step 4	-	-
5	NO. 1 EXHAUST MANIFOLD HEAT INSULATOR	17167	See step 5	-	-
6	MANIFOLD STAY	17118	See step 6	-	-
7	EXHAUST MANIFOLD	17141	See step 7	-	-

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Non-reusable part

Fig 2: Cylinder Head Gasket Removal Components (2 Of 7)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
8	THROTTLE BODY WITH MOTOR ASSEMBLY	22030	See step 8	-	-
9	THROTTLE BODY GASKET	22271	-	-	-
10	NO. 3 WATER BY-PASS HOSE	16267	-	-	-
11	NO. 4 WATER BY-PASS HOSE	16281	-	-	-
12	EGR COOLER ASSEMBLY	25680	See step 12	-	-
13	NO. 1 EGR COOLER GASKET	25685	See step 13	-	-
14	NO. 1 EGR PIPE SUB-ASSEMBLY	25601	See step 14	-	-
15	EGR VALVE ADAPTER GASKET	25629	-	-	-
16	EGR INLET GASKET	25628	-	-	-
17	NO. 4 WATER BY-PASS HOSE	16281	-	-	-
18	NO. 8 WATER BY-PASS HOSE	16296	-	-	-
19	EGR VALVE ASSEMBLY	25620	See step 19	-	-
20	EGR VALVE GASKET	25627	See step 20	-	-
21	NO. 3 WATER BY-PASS PIPE	16279	See step 21	-	-
22	INTAKE MANIFOLD STAY	17138B	See step 22	-	-
23	INTAKE MANIFOLD	17111	-	-	-
24	NO. 1 INTAKE MANIFOLD TO HEAD GASKET	17177	-	-	-

*a	x2 or x3	*b	x3 or x2
•	Non-reusable part	-	-

Fig 3: Cylinder Head Gasket Removal Components (3 Of 7)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
25	FUEL TUBE SUB-ASSEMBLY	23910A	See step 25	-	-
26	NO. 1 FUEL PIPE SUB-ASSEMBLY	23801P	See step 26	-	-
27	FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY	23100X	See step 27	-	-
28	FUEL PUMP FLANGE	23191	-	-	-
29	FUEL PUMP SPACER GASKET	23224D	-	-	-
30	FUEL PUMP LIFTER ASSEMBLY	23470	-	-	-
31	WATER BY-PASS HOSE ASSEMBLY	-	-	-	-
32	FUEL DELIVERY PIPE SUB-ASSEMBLY	23807	See step 32	-	-
33	FUEL DELIVERY SPACER	23891	-	-	-
34	INJECTOR VIBRATION INSULATOR	23291	-	-	-
35	NO. 5 ENGINE WIRE	82125N	-	-	-
36	PORT FUEL INJECTOR ASSEMBLY	23250F	See step 36	-	-
37	FUEL DELIVERY PIPE	23814B	See step 37	-	-
38	DIRECT FUEL INJECTOR ASSEMBLY	23250E	See step 38	-	-
39	NOZZLE HOLDER CLAMP	23695A	-	-	-
40	NO. 3 FUEL INJECTOR BACK-UP RING	23258	See step 40	-	-
41	NO. 1 FUEL INJECTOR BACK-UP RING	23256	-	-	-
42	C-RING	-	-	-	-
43	INJECTOR VIBRATION INSULATOR	23291A	-	-	-
44	FUEL INJECTOR SEAL	23255A	See step 44	-	-

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Non-reusable part

Fig 4: Cylinder Head Gasket Removal Components (4 Of 7)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
45	IGNITION COIL ASSEMBLY	19500	See step 45	-	-
46	ENGINE OIL LEVEL DIPSTICK GUIDE	11452D	See step 46	-	-
47	OIL PRESSURE CONTROL VALVE ASSEMBLY	15250	See step 47	-	-
48	CAMSHAFT POSITION SENSOR (for Intake Side)	11102A	See step 48	-	-
49	CAMSHAFT POSITION SENSOR (for Exhaust Side)	11102A	See step 49	-	-
50	CAM TIMING OIL CONTROL SOLENOID ASSEMBLY	15370	See step 50	-	-
51	O-RING	-	See step 51	-	-
52	CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY	13090D	See step 52	-	-
53	CAM TIMING CONTROL MOTOR O-RING	13090E	-	-	-
54	CRANKSHAFT PULLEY ASSEMBLY	13470	See step 54	-	-
55	WATER OUTLET SUB-ASSEMBLY	16304	-	-	-
56	WATER BY-PASS OUTLET	16351	See step 56	-	-

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Non-reusable part

Precoated part

Fig 5: Cylinder Head Gasket Removal Components (5 Of 7)

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
57	CYLINDER HEAD COVER SUB-ASSEMBLY	11201	See step 57	-	-
58	SPARK PLUG TUBE GASKET	11193	See step 58	-	-
59	ENGINE MOUNTING BRACKET RH	12315A	-	-	-

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Non-reusable part

Precoated part

Fig 6: Cylinder Head Gasket Removal Components (6 Of 7)

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
60	NO. 2 TIMING CHAIN COVER ASSEMBLY	11302B	See step 60	-	-
61	TIMING CHAIN COVER OIL SEAL	11301C	See step 61	-	-
62	NO. 1 CYLINDER TO TDC (COMPRESSION)	-	See step 62	-	-
63	OIL PUMP DRIVE CHAIN SUB-ASSEMBLY	13507A	See step 63	-	-
64	CAMSHAFT TIMING GEAR ASSEMBLY	13050	See step 64	-	-
65	CHAIN SUB-ASSEMBLY	13506	-	-	-
66	NO. 1 CHAIN TENSIONER ASSEMBLY	13540	See step 66	-	-
67	CHAIN TENSIONER SLIPPER	13559	-	-	-
68	NO. 1 CHAIN VIBRATION DAMPER	13561	-	-	-
69	CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY	13070A	See step 69	-	-
70	TIMING CHAIN COVER ASSEMBLY	11310	See step 70	-	-

*1	CRANKSHAFT TIMING SPROCKET	*2	OIL PUMP DRIVE SPROCKET
*3	OIL PUMP DRIVE SHAFT SPROCKET	*4	CHAIN TENSIONER PLATE
*5	CHAIN DAMPER SPRING	-	-
•	Non-reusable part	-	-
	Do not apply lubricants to the threaded parts	-	-

Fig 7: Cylinder Head Gasket Removal Components (7 Of 7)

Procedure		Part Name Code	Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
71	FUEL PUMP LIFTER GUIDE	23477	See step 71	-	-
72	CAMSHAFT HOUSING SUB-ASSEMBLY	11103	See step 72	-	-
73	CAMSHAFT BEARING CAP	-	See step 73	-	-
74	INTAKE CAMSHAFT SUB-ASSEMBLY	13501A	-	-	-
75	EXHAUST CAMSHAFT SUB-ASSEMBLY	13502B	-	-	-
76	NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY	13801	See step 76	-	-
77	VALVE LASH ADJUSTER ASSEMBLY	13750	See step 77	-	-
78	CYLINDER HEAD SUB-ASSEMBLY	11101	See step 78	-	-
79	CYLINDER HEAD GASKET	11115	-	-	-
80	INSPECT CYLINDER HEAD SET BOLT	11101A	See step 80	-	-
81	INSPECT CYLINDER HEAD SUB-ASSEMBLY	11101	-	-	-

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Non-reusable part