Toyota Avalon (XX50): Knock Sensor

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Engine / 2gr-fks Engine Control / Knock Sensor

Components

COMPONENTS

ILLUSTRATION

*1

KNOCK CONTROL SENSOR (for Bank 1)

*2

KNOCK CONTROL SENSOR (for Bank 2)

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

*

For use with a union nut wrench

Inspection

INSPECTION

PROCEDURE

1. INSPECT KNOCK CONTROL SENSOR

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 - 2

25°C (77°F)

120 to 280 kΩ

If the result is not as specified, replace the knock control sensor.

*a

Component without harness connected

(Knock Control Sensor)

Installation

INSTALLATION

PROCEDURE

1. INSTALL KNOCK CONTROL SENSOR

HINT:

Perform "Inspection After Repair" after replacing a knock control sensor.

Click here

(a) Temporarily install the 2 knock control sensors to the cylinder block sub-assembly with the 2 bolts so that the knock control sensor installation position is as shown in the illustration.

*A

for Bank 1

*B

for Bank 2

*a

View A

*b

View B

*c

Top

*d

Engine Front

*e

Engine Rear

*f

5°

*g

10°

Engine Front

View A

View B

NOTICE:

  • If a knock control sensor has been struck or dropped, replace it.
  • Make sure that the knock control sensor is installed in the correct position.

(b) Tighten the bolt (A).

Torque:

20 N·m {204 kgf·cm, 15 ft·lbf}

*a

Torque Wrench Fulcrum Length

*b

10 mm Union Nut Wrench

(c) Using a 10 mm union nut wrench, tighten the bolt (B).

Torque:

Specified tightening torque :

20 N·m {204 kgf·cm, 15 ft·lbf}

HINT:

  • Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.

    Click here

  • When using a 10 mm union nut wrench (fulcrum length of 22 mm (0.866 in.)) + torque wrench (fulcrum length of 162 mm (6.38 in.)):

    17.6 N*m (179 kgf*cm, 13 ft.*lbf)

(d) Connect the 2 knock control sensor connectors.

2. INSTALL FUEL DELIVERY PIPE

Click here

3. PERFORM INITIALIZATION

(a) Perform "Inspection After Repair" after replacing a knock control sensor.

Click here

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 knock control sensor 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

*: When performing learning using the Techstream.

Click here

Battery terminal is disconnected/reconnected

Perform steering sensor zero point calibration

Lane Departure Alert System (w/ Steering Control)

Pre-collision System

Intelligent Clearance Sonar System*

Lighting System (for Gasoline Model with Cornering Light)

Memorize steering angle neutral point

Parking Assist Monitor System

Panoramic View Monitor System

  • Replacement of fuel injector assembly (for Port Injection)
  • Replacement of fuel injector assembly (for Direct Injection)
  • Replacement of throttle body with motor assembly
  • Cleaning the deposits from the throttle body with motor assembly
  • Replacement of knock control sensor

Inspection after repair

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

PROCEDURE

1. REMOVE FUEL DELIVERY PIPE

Click here

2. REMOVE KNOCK CONTROL SENSOR

(a) Disconnect the 2 knock control sensor connectors.

*A

for Bank 1

*B

for Bank 2

(b) Remove the 2 bolts and 2 knock control sensors from the cylinder block sub-assembly.

NOTICE:

If a knock control sensor has been struck or dropped, replace it.

Ignition System

Mass Air Flow Meter

See More:

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Axle And Differential: Front Axle Hub
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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