Toyota RAV4 manuals

Toyota RAV4 (XA40) 2013-2018 Service Manual: Seat position airbag sensor circuit malfunction

Toyota RAV4 (XA40) 2013-2018 Service Manual / Supplemental restraint system / Airbag system / Diagnostic trouble code chart / Seat position airbag sensor circuit malfunction

Toyota RAV4. Seat position airbag sensor circuit malfunction


Description

The seat position sensor circuit consists of the center airbag sensor and the seat position sensor.

Dtc b1653/35 is recorded when a malfunction is detected in the seat position sensor circuit.

Toyota RAV4. Seat position airbag sensor circuit malfunction


Wiring diagram

Toyota RAV4. Seat position airbag sensor circuit malfunction


Inspection procedure

  1. Check for dtc

Toyota RAV4. Check for dtc


  1. Turn the ignition switch on, and wait for at least 60 seconds.
  2. Clear the dtcs (see page rs-49).
  3. Turn the ignition switch off.
  4. Turn the ignition switch on, and wait for at least 60 seconds.
  5. Check the dtcs (see page rs-49).

Ok: dtc b1653/35 is not output.

Hint:

Dtcs other than dtc b1653/35 may be output at this time, but they are not related to this check.



  1. Check connection of connector

  1. Turn the ignition switch off.
  2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
  3. Check that the connectors are properly connected to the center airbag sensor and the seat position sensor.

Ok: the connectors are properly connected.



  1. Check seat position sensor circuit (open)

Toyota RAV4. Check seat position sensor circuit (open)


  1. Disconnect the connectors from the center airbag sensor and the seat position sensor.
  2. Using a service wire, connect 2 and 1 of connector e.

Notice:

Do not forcibly insert the service wire into the terminals of the connector when connecting.

  1. Measure the resistance of the wire harness side connector.

Standard resistance:

W/o curtain shield airbag


W/ curtain shield airbag




  1. Check seat position sensor circuit (short)

Toyota RAV4. Check seat position sensor circuit (short)


  1. Disconnect the service wire from connector e.
  2. Measure the resistance of the wire harness side connector.

Standard resistance




  1. Check seat position sensor circuit (to b+)

Toyota RAV4. Check seat position sensor circuit (to b+)


  1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
  2. Turn the ignition switch on.
  3. Measure the voltage of the wire harness side connector.

Standard voltage




  1. Check seat position sensor circuit (to ground)

Toyota RAV4. Check seat position sensor circuit (to ground)


  1. Turn the ignition switch off.
  2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
  3. Measure the voltage of the wire harness side connector.

Standard resistance




  1. Check seat position sensor

Toyota RAV4. Check seat position sensor


  1. Connect the connectors to the center airbag sensor and the seat position sensor.
  2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
  3. Turn the ignition switch on, and wait for at least 60 seconds.
  4. Clear the dtcs (see page rs-49).
  5. Turn the ignition switch off.
  6. Turn the ignition switch on, and wait for at least 60 seconds.
  7. Check the dtcs (see page rs-49).

Ok: dtc b1653/35 is not output.

Hint:

Dtcs other than dtc b1653/35 may be output at this time, but they are not related to this check.


  1. Replace seat position sensor

  1. Turn the ignition switch off.
  2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
  3. Replace the seat position sensor (see page rs-389).

Hint:

Perform the inspection using parts from a normal vehicle if possible.


  1. Check center airbag sensor assembly

Toyota RAV4. Check center airbag sensor assembly


  1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
  2. Turn the ignition switch on, and wait for at least 60 seconds.
  3. Clear the dtcs (see page rs-49).
  4. Turn the ignition switch off
  5. Turn the ignition switch on, and wait for at least 60 seconds.
  6. Check the dtcs (see page rs-49).

Ok: dtc b1653/35 is not output.

Hint:

Dtcs other than dtc b1653/35 may be output at this time, but they are not related to this check.



End

  1. Check floor wire (open)

Toyota RAV4. Check floor wire (open)


  1. Disconnect the front seat inner belt connector from the flow wire.
  2. Using a service wire, connect k4-1 (lsp+) and k4-2 (lsp-) of connector c.

Notice:

Do not forcibly insert the service wire into the terminals of the connector when connecting.

  1. Measure the resistance of the wire harness side connectors.

Standard resistance:

W/o curtain shield airbag


W/ curtain shield airbag




Replace front seat inner belt assembly lh

  1. Check floor wire (short)

Toyota RAV4. Check floor wire (short)


  1. Disconnect the front seat inner belt connector from the floor wire.
  2. Measure the resistance of the wire harness side connector.

Standard resistance




Replace front seat inner belt assembly lh

  1. Check floor wire (to b+)

Toyota RAV4. Check floor wire (to b+)


  1. Turn the ignition switch off.
  2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
  3. Disconnect the front seat inner belt connector from the floor wire.
  4. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
  5. Turn the ignition switch on.
  6. Measure the voltage of the wire harness side connectors.

Standard voltage




Replace front seat inner belt assembly lh

  1. Check floor wire (to ground)

Toyota RAV4. Check floor wire (to ground)


  1. Disconnect the front seat inner belt connector from the floor wire.
  2. Measure the resistance of the wire harness side connectors.

Standard resistance




Replace front seat inner belt assembly lh

Occupant classification system malfunction
Description The occupant classification system circuit consists of the center airbag sensor and the occupant classification system. When the center airbag sensor receives signals from the occup ...

Driver side seat belt buckle switch circuit malfunction
Description The driver side seat belt buckle switch circuit consists of the center airbag sensor and the front seat inner belt lh. Dtc b1655/37 is recorded when a malfunction is detected in ...

Other materials:

Installation
Install crankshaft position sensor Notice: Make sure that the o-ring is not cracked or jammed when installing it. Apply a light coat of engine oil to the o-ring of the sensor. Install the sensor with the bolt. Torque: 9.0 N*m (90 kgf*cm, 80 in.*Lbf) Install the wire ha ...

Engine compartment
Engine coolant reservoir Engine oil filler cap Battery Brake fluid reservoir Fuse box Radiator Condenser Electric cooling fans Engine oil level dipstick Washer fluid tank Engine oil With the engine at operating temperature and turned off, check the oil level on the dips ...

Reassembly
Install front oil pump oil seal Using sst and a hammer, install a new oil seal to the pump. Sst 09350-32014 (09351-32140) Hint: The seal end should be flat with the outer edge of the oil pump. Coat the lip of the oil seal with petroleum jelly. Install front oil pump bo ...

В© 2011-2025 Copyright www.trav4.net