2ZR-FAE (ENGINE MECHANICAL): CAMSHAFT: REMOVAL; 2023 MY Corolla [09/2022

Last Modified: 07-31-2024	6.11:8.1.0	Doc ID: RM10000000271KG
Model Year Start: 2023	Model: Corolla	Prod Date Range: [09/2022 - 11/2022]
Title: 2ZR-FAE (ENGINE MECHANICAL): CAMSHAFT: REMOVAL; 2023 MY Corolla [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 camshaft 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/ Smart Key System 2: w/o Smart Key System *3: w/ Steering Lock Function
Replacement of ECM	Vehicle Identification Number (VIN) registration	MIL comes on
	ECU communication ID registration (Immobiliser system)	Engine start function
	Reset memory Deceleration sensor zero point calibration CVT oil pressure calibration	Large shift shock Deterioration of fuel efficiency
Replacement of ECM*1	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*3
Replacement of ECM*2	Code registration (Immobiliser system)	Engine start Telematics System
Replacement of throttle body assembly Replacement of engine assembly Replacement of camshaft timing gear assembly Replacement of camshaft timing exhaust gear assembly Replacement of fuel injector assembly Replacement of ignition coil assembly Gas leak from exhaust system is repaired Replacement of continuously variable valve lift controller assembly	Inspection After Repair	Poor idle, etc. Engine start function, etc.
Front wheel alignment adjustment	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	for K313

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
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)

PROCEDURE

1. REMOVE CHAIN SUB-ASSEMBLY

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2. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY

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3. INSPECT CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY

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4. REMOVE CAMSHAFT TIMING GEAR ASSEMBLY

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5. REMOVE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY

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6. REMOVE VALVE ROCKER ARM LOST MOTION DAMPER SUB-ASSEMBLY

(a) Remove the 8 bolts and 4 valve rocker arm lost motion damper sub-assemblies.

NOTICE:

Make sure the camshaft housing sub-assembly is installed to the cylinder head sub-assembly when removing or installing a valve rocker arm lost motion damper sub-assembly.
If a valve rocker arm lost motion damper sub-assembly is removed, do not remove the camshaft housing sub-assembly.
Do not remove the shims. If a shim is removed, replace the camshaft housing sub-assembly as engine malfunctions may result from irregular valve timing.

Shim

7. INSTALL VALVE ROCKER ARM LOST MOTION DAMPER SUB-ASSEMBLY

(a) Install the 4 valve rocker arm lost motion damper sub-assemblies with the 8 bolts. Uniformly tighten the bolts.

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

*a	Hole for Engine Oil

(b) Add engine oil into the hole for engine oil.

8. REMOVE CAMSHAFT HOUSING SUB-ASSEMBLY

NOTICE:

The camshaft housing sub-assembly is replaced with an assembled unit that includes the camshaft housing, camshafts, camshaft bearing caps, valve rocker shaft, continuously variable valve lift controller assembly and valve rocker arm lost motion damper sub-assembly. If disassembled, replace the camshaft housing sub-assembly.

The camshafts cannot be replaced by themselves.

*1	Camshaft Housing Sub-assembly	*2	Continuously Variable Valve Lift Controller Assembly
*a	Set of parts that are replaced together	-	-

(a) Uniformly loosen and remove the 17 bearing cap bolts in the order shown in the illustration.

NOTICE:

Uniformly loosen the bearing cap bolts while keeping the camshaft housing level.

(b) Using a screwdriver, remove the camshaft housing sub-assembly by prying between the cylinder head sub-assembly and camshaft housing sub-assembly.

NOTICE:

Be careful not to damage the contact surfaces of the cylinder head sub-assembly and camshaft housing sub-assembly.

HINT:

Tape the screwdriver tip before use.

*a	Protective Tape

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

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10. REMOVE VALVE LASH ADJUSTER ASSEMBLY

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11. INSPECT NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY

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12. INSPECT VALVE LASH ADJUSTER ASSEMBLY

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