Toyota Tundra Service Manual: Knock Sensor

Components

COMPONENTS

ILLUSTRATION

Inspection

INSPECTION

PROCEDURE

1. INSPECT KNOCK SENSOR

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 - 2

20°C (68°F)

120 k to 280 kΩ

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

Installation

INSTALLATION

CAUTION / NOTICE / HINT

HINT:

Perform "Inspection After Repairs" after replacing the knock sensor (See page ).

PROCEDURE

1. INSTALL KNOCK SENSOR

HINT:

Perform "Inspection After Repairs" after replacing the knock sensor (See page ).

(a) Install the 4 knock sensors with the 4 bolts so that the sensors are angled as shown in the illustration.

Torque:

20 N·m {204 kgf·cm, 15 ft·lbf}

Text in Illustration

*a

Bank 2 Sensor 1

*b

Bank 1 Sensor 1

*c

Bank 2 Sensor 2

*d

Bank 1 Sensor 2

*e

Front

*f

Upper

*g

Rear

NOTICE:

The acceptable installation angle of the knock sensor is between 10° upward and 2° downward from the horizontal position.

(b) Connect the 4 knock sensor connectors.

2. INSTALL SEPARATOR CASE

(a) Install the separator case with the 4 bolts.

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

3. CONNECT NO. 9 WATER BY-PASS HOSE

(a) Connect the No. 9 water by-pass hose to the separator case, and slide the clamp to secure the hose.

Text in Illustration

*a

Blue Mark

HINT:

Make sure the hose color matches the connection area color.

4. CONNECT NO. 10 WATER BY-PASS HOSE

(a) Connect the No. 10 water by-pass hose to the separator case, and slide the clamp to secure the hose.

Text in Illustration

*a

Green Mark

HINT:

Make sure the hose color matches the connection area color.

5. INSTALL INTAKE MANIFOLD

(See page )

Removal

REMOVAL

PROCEDURE

1. REMOVE INTAKE MANIFOLD

(See page )

2. DISCONNECT NO. 10 WATER BY-PASS HOSE

(a) Slide the clamp and remove the No. 10 water by-pass hose from the separator case.

3. DISCONNECT NO. 9 WATER BY-PASS HOSE

(a) Slide the clamp and remove the No. 9 water by-pass hose from the separator case.

4. REMOVE SEPARATOR CASE

(a) Remove the 4 bolts and separator case.

5. REMOVE KNOCK SENSOR

(a) Disconnect the 4 knock sensor connectors.

(b) Remove the 4 bolts and 4 knock sensors.

    Ignition Relay No. 2

    Manifold Absolute Pressure Sensor

    See More:

    Toyota Tundra Service Manual > Audio And Visual System: Diagnostic Trouble Code Chart
    DIAGNOSTIC TROUBLE CODE CHART HINT: If a trouble code is output during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below. Audio and Visual System DTC Code Detection Item See page B1324 Lost Communication with Meter B1532 LVDS Signal ...

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