Air-Fuel Ratio Sensor

2006 Toyota RAV4 4WD L4-2.4L (2AZ-FE)SECTION Air-Fuel Ratio Sensor
REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.




2. REMOVE AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1)
a. Disconnect the sensor connector.
b. Using SST, remove the sensor from the exhaust manifold.

SST 09224-00010

INSTALLATION




1. INSTALL AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1)
a. Using SST, install the sensor to the exhaust manifold.

SST 09224-00010

Torque: 40 N.m (408 kgf.cm, 30 ft.lbf) for use with SST

44 N.m (449 kgf.cm, 32 ft.lbf) for use without SST

HINT:
- Use a torque wrench with a fulcrum length of 30 cm (11.81 in.).
- Make sure SST and wrench are connected in a straight line.

b. Connect the sensor connector.

2. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
3. CHECK FOR EXHAUST GAS LEAKS
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.