Toyota RAV4 (XA40) 2013-2018 Service Manual: Air fuel ratio sensor
Components
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On-vehicle inspection
- Check air fuel ratio compensation system
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- Connect the intelligent tester to the dlc3.
- Turn the ignition switch on.
- Select the following menu items: data list / a/fs b1
s1 and o2s b1 s2.
- Warm up the a/f sensor with the engine speed at
2,500 rpm for approximately 2 minutes.
- Keep the engine speed at 2,500 rpm and confirm
that the display of "a/fs b1 s1" is as shown in the
illustration.
Hint:
- The illustration may slightly differ from the display
on the intelligent tester.
- Only the intelligent tester displays the waveform
of the a/f sensor.
- Confirm that the display of "o2s b1 s2" changes
between 0 to 1 v with the engine speed at 2,500
rpm.
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Ok:
the voltage output oscillates more than 8
times in 10 seconds.
Notice:
- Perform the check immediately after warming
the engine up.
- If the voltage variation could not be verified,
warm up the a/f sensor again. If it could not
be verified even after warming up the sensor
again, check for dtcs (see page es-292).
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 air fuel ratio sensor (for bank 1 sensor 1)
- Disconnect the sensor connector.
- Using sst, remove the sensor from the exhaust
manifold.
Sst 09224-00010
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Inspection
- Inspect air fuel ratio sensor (for bank 1 sensor 1)
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- Measure the resistance of the sensor.
Standard resistance 
If the resistance is not as specified, replace the
sensor.
Installation
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- Install air fuel ratio sensor (for bank 1 sensor 1)
- 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.
- Connect the sensor connector.
- Connect cable to negative battery
terminal
- Check for exhaust gas leaks
Components
Removal
Remove no. 1 Engine cover (see page em-22)
Remove ventilation valve sub-assembly
Disconnect the ventilation hose from the ventilation
valve.
Using a ...
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 ai ...
Other materials:
Transmission wire
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 no. 1 Engine under cover
Drain automati ...
Installation (2006/01- )
Install front drive shaft assembly lh
Coat the spline of the inboard joint shaft with gear
oil.
Align the shaft splines and tap in the drive shaft with
a brass bar and hammer.
Notice:
Set the snap ring with the opening side facing
downwards.
Be careful not to damage the ...
Checking and replacing
fuses
If any of the electrical components do not operate, a fuse may
have blown. If this happens, check and replace the fuses as necessary.
Vehicles without a smart key system:
turn the engine switch to the “lock” position.
Vehicles with a smart key system:
turn the engine switch off.
Aft ...