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:

 Installation

INSTALLATION PROCEDURE 1. INSTALL WINDSHIELD WIPER RELAY ASSEMBLY (a) Attach the 2 claws to install the windshield wiper relay assembly. 2. INSTALL ECU INTEGRATION BOX RH Click here 3. INSTALL NO. 2 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY Click here 4. INSTALL GLOVE COMPARTMENT DOOR ASSEMBLY C

 Terminals Of Ecu

TERMINALS OF ECU CHECK DCM (TELEMATICS TRANSCEIVER) Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition I183-1 (+B) - I183-20 (E) Y - W-B Power source (+B) Power switch off 11 to 14 V I183-3 (SIG-) - I183-20 (E) G - W-B Ground Alway

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