Toyota RAV4 Service Manual: Heated oxygen sensor
Components
Removal
- 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.
- Remove heated oxygen sensor (for bank 1 sensor 2)
- Disconnect the sensor connector.
- Using sst, remove the sensor from the front exhaust pipe.
Sst 09224-00010
Inspection
- Inspect heated oxygen sensor (for bank 1 sensor 2)
- Measure the resistance of the sensor.
Standard resistance 
If the resistance is not as specified, replace the sensor.
Installation
- Install heated oxygen sensor (for bank 1 sensor 2)
- Using sst, install the sensor to the front exhaust pipe.
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.
- Connect the sensor connector.
- Connect cable to negative battery terminal
- Check for exhaust gas leaks
Air fuel ratio sensor
Components
On-vehicle inspection
Check air fuel ratio compensation system
Connect the intelligent tester to the dlc3.
Turn the ignition switch on.
Select the following menu item ...
Fuel tank cap
Inspection
Inspect fuel tank cap assembly
Visually check that the cap and gasket are not
deformed or damaged.
If the result is not as specified, replace the cap
assembly or gaske ...
Other materials:
Intake air temperature sensor gradient too high
Description
The intake air temperature (iat) sensor, mounted on the mass air flow (maf)
meter, monitors the iat.
The iat sensor has a built-in thermistor with a resistance that varies according
to the temperature of the
intake air. When the iat is low, the resistance of the thermist ...
Rear differential carrier assembly
Components
...
Removal
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.
Remove rear door scuff plate rh (see page
ir-29)
Remove package tray trim ...