Toyota Tacoma Quiz
2gr-fks Engine Control

Air Fuel Ratio Sensor

In this manual: 2gr-fks Engine Control
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~3min read
1special tools
0204060801004432N·mlb·ft
Tightening torque found on this page
Components COMPONENTS ILLUSTRATION Removal Removal REMOVAL PROCEDURE

1. REMOVE AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1)

(a) Disconnect the air fuel ratio sensor connector.

(b) Disengage the clamp to separate the air fuel ratio sensor wire.

(c) Using SST, remove the air fuel ratio sensor from the exhaust manifold sub-assembly RH.

SST: 09224-00011

2. REMOVE AIR FUEL RATIO SENSOR (for Bank 2 Sensor 1)

(a) Disconnect the air fuel ratio sensor connector.

(b) Disengage the clamp to separate the air fuel ratio sensor wire.

(c) Using SST, remove the air fuel ratio sensor from the exhaust manifold sub-assembly LH.

SST: 09224-00011
Inspection INSPECTION PROCEDURE

1. INSPECT AIR FUEL RATIO SENSOR

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

Text in Illustration

*A

for Bank 1 Sensor 1

*B

for Bank 2 Sensor 1

*a

Component without harness connected

(Air Fuel Ratio Sensor)

Standard Resistance (for Bank 1 Sensor 1):

Tester Connection

Condition

Specified Condition

1 (HA1A) - 2 (+B)

20 °C

1.6 to 3.2 Ω

1 (HA1A) - 4 (A1A-)

Always

10 kΩ or higher

Standard Resistance (for Bank 2 Sensor 1):

Tester Connection

Condition

Specified Condition

1 (HA2A) - 2 (+B)

20 °C

1.6 to 3.2 Ω

1 (HA2A) - 4 (A2A-)

Always

10 kΩ or higher

If the result is not as specified, replace the air fuel ratio sensor.
Installation INSTALLATION PROCEDURE

1. INSTALL AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1)

HINT:

Perform "Inspection After Repair" after replacing the air fuel ratio sensor (See page ).

(a) Using SST, install the air fuel ratio sensor to the exhaust manifold sub-assembly RH.

Text in Illustration

*a

Torque Wrench Fulcrum Length

SST: 09224-00011

Torque:

Specified tightening torque :

44 N·m {449 kgf·cm, 32 ft·lbf}

HINT:

  • Calculate the torque wrench reading when changing the fulcrum length of the torque wrench (See page When using SST (fulcrum length of 30 mm (1.18 in.)) + torque ).
  • When using SST (fulcrum length of 30 mm (1.18 in.)) + torque wrench (fulcrum length of 180 mm (7.09 in.)): 38 N*m (384 kgf*cm, 28 ft.*lbf)

(b) Engage the clamp to install the air fuel ratio sensor wire.

(c) Connect the air fuel ratio sensor connector.

2. INSTALL AIR FUEL RATIO SENSOR (for Bank 2 Sensor 1)

HINT:

Perform "Inspection After Repair" after replacing the air fuel ratio sensor (See page ).

(a) Using SST, install the air fuel ratio sensor to the exhaust manifold sub-assembly LH.

Text in Illustration

*a

Torque Wrench Fulcrum Length

SST: 09224-00011

Torque:

Specified tightening torque :

44 N·m {449 kgf·cm, 32 ft·lbf}

HINT:

  • Calculate the torque wrench reading when changing the fulcrum length of the torque wrench (See page When using SST (fulcrum length of 30 mm (1.18 in.)) + torque ).
  • When using SST (fulcrum length of 30 mm (1.18 in.)) + torque wrench (fulcrum length of 180 mm (7.09 in.)): 38 N*m (384 kgf*cm, 28 ft.*lbf)

(b) Engage the clamp to install the air fuel ratio sensor wire.

(c) Connect the air fuel ratio sensor connector.

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