Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Ignition Coil And Spark Plug

Components

COMPONENTS

ILLUSTRATION

*1

IGNITION COIL ASSEMBLY

*2

NO. 1 ENGINE COVER SUB-ASSEMBLY

*3

SPARK PLUG

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N*m (kgf*cm, ft.*lbf): Specified torque

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Installation

INSTALLATION

CAUTION / NOTICE / HINT

NOTICE:

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

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PROCEDURE

1. INSTALL SPARK PLUG

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2. INSTALL IGNITION COIL ASSEMBLY

HINT:

Perform "Inspection After Repair" after replacing an ignition coil assembly.

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(a) Using an 8 mm socket wrench, install the 4 ignition coil assemblies to the cylinder head cover sub-assembly with the 4 bolts.

Torque:

7.5 N·m {76 kgf·cm, 66 in·lbf}

NOTICE:

If an ignition coil assembly has been struck or dropped, replace it.

HINT:

Install the same parts to their original positions.

(b) Connect the 4 ignition coil assembly connectors.

3. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY

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4. PERFORM INITIALIZATION

(a) Perform "Inspection After Repair" after replacing an ignition coil assembly or spark plug.

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Removal

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 ignition coil assembly or spark plug 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 ignition coil assembly
  • Replacement of spark plug

Inspection after repair

  • Poor idle, etc.
  • Engine start function, etc.

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

PROCEDURE

1. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY

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2. REMOVE IGNITION COIL ASSEMBLY

(a) Disconnect the 4 ignition coil assembly connectors.

(b) Using an 8 mm socket wrench, remove the 4 bolts and 4 ignition coil assemblies from the cylinder head cover sub-assembly.

NOTICE:

If an ignition coil assembly has been struck or dropped, replace it.

HINT:

Arrange the removed parts in the correct order.

3. REMOVE SPARK PLUG

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    Removal

    Ignition System

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