Toyota Venza Quiz
1ar-fe Engine Control

Air Fuel Ratio Sensor

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

1. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY


2. REMOVE COOL AIR INTAKE DUCT SEAL


3. REMOVE INLET AIR CLEANER ASSEMBLY


4. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR


5. REMOVE AIR FUEL RATIO SENSOR

(a) Disconnect the air fuel ratio sensor connector.

(b) Remove the wire harness clamp.

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

SST: 09224-00011
Inspection INSPECTION PROCEDURE

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 (HA1A) - 2 (+B)

20 °C

1.6 to 3.2 Ω

1 (HA1A) - 4 (A1A-)

-

10 kΩ or higher

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

Text in Illustration

*a

Component without harness connected

(Air Fuel Ratio Sensor)
Installation INSTALLATION PROCEDURE

1. INSTALL AIR FUEL RATIO SENSOR

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

Text in Illustration

*1

Fulcrum Length

30 mm

*2

Fulcrum Length

300 mm

SST: 09224-00011

Torque:

without SST :

44 N·m {449 kgf·cm, 32 ft·lbf}

with SST :

40 N·m {408 kgf·cm, 30 ft·lbf}

NOTICE:

  • The "with SST" torque value is effective when using SST with a fulcrum length of 30 mm (1.18 in.).
  • The "with SST" torque value is effective when using a torque wrench with a fulcrum length of 300 mm (11.81 in.) (See page ).

  • This torque value is effective when SST is parallel to the torque wrench.

HINT:

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

(b) Connect the air fuel ratio sensor connector.

(c) Install the wire harness clamp.

2. INSPECT FOR EXHAUST GAS LEAK

3. INSTALL NO. 1 EXHAUST MANIFOLD HEAT INSULATOR


4. INSTALL INLET AIR CLEANER ASSEMBLY


5. INSTALL COOL AIR INTAKE DUCT SEAL


6. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY

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