Lexus NX: 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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Removal

REMOVAL

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) Remove the 4 bolts and 4 ignition coil assemblies.

NOTICE:

Replace with a new part if it is dropped or if it receives a strong impact.

3. REMOVE SPARK PLUG

(a) Using a 16 mm spark plug wrench, remove the 4 spark plugs.

NOTICE:

Replace with a new part if it is dropped or if it receives a strong impact.

*a

16 mm Spark Plug Wrench

Installation

INSTALLATION

CAUTION / NOTICE / HINT

HINT:

Perform "Inspection After Repairs" after replacing the ignition coil assembly or the spark plug.

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PROCEDURE

1. INSTALL SPARK PLUG

HINT:

Perform "Inspection After Repairs" after replacing the spark plug.

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(a) Using a 16 mm spark plug wrench, install the 4 spark plugs.

Torque:

25 N·m {255 kgf·cm, 18 ft·lbf}

NOTICE:

Replace with a new part if it is dropped or if it receives a strong impact.

2. INSTALL IGNITION COIL ASSEMBLY

HINT:

Perform "Inspection After Repairs" after replacing the ignition coil assembly.

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(a) Install the 4 ignition coil assemblies with the 4 bolts.

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

NOTICE:

Replace with a new part if it is dropped or if it receives a strong impact.

(b) Connect the 4 ignition coil assembly connectors.

3. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY

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READ NEXT:

 Ignition System

 Parts Location

PARTS LOCATION ILLUSTRATION *1 IGNITION COIL ASSEMBLY *2 ECM *3 NO. 1 ENGINE ROOM RELAY BLOCK LH - IGN FUSE *4 SPARK PLUG

 System Diagram

SYSTEM DIAGRAM

SEE MORE:

 On-vehicle Inspection

ON-VEHICLE INSPECTION CAUTION / NOTICE / HINT NOTICE: When the brake pedal is first depressed after replacing the brake pads or pushing back the disc brake piston, DTC C1214 may be output. As there is no malfunction, clear the DTC. While the auxiliary battery is connected, even if the power swi

 Visual Mute Signal Circuit between Radio Receiver and Multi-display

DESCRIPTION The radio receiver assembly sends a visual mute signal to the multi-display assembly. As a result, a black screen is inserted when the screen changes so that noise and distorted images are not displayed. When an open exists in the circuit, noise and distorted images will be displayed ins

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