Toyota Avalon (XX50): Air Fuel Ratio Sensor(for Sensor 1)

*1

AIR FUEL RATIO SENSOR

*2

NO. 1 ENGINE COVER SUB-ASSEMBLY

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

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For use with SST

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

Standard Resistance:

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

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

SST: 09224-00012

Torque:

Specified tightening torque :

44 N·m {449 kgf·cm, 32 ft·lbf}

NOTICE:

If the air fuel ratio sensor has been struck or dropped, replace it.

HINT:

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

  Click here

• When using SST (fulcrum length of 30 mm (1.18 in.)) + torque wrench (fulcrum length of 180 mm (7.09 in.)):

  37.7 N*m (384 kgf*cm, 28 ft.*lbf)

(b) Connect the air fuel ratio sensor connector.

• Replacement of air fuel ratio sensor (sensor 1)
• Gas leak from exhaust system is repaired

Inspection after repair

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

(a) Disengage the 3 wire harness clamps.

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

SST: 09224-00012

NOTICE:

If the air fuel ratio sensor has been struck or dropped, replace it.