Toyota RAV4 manuals

Toyota RAV4 (XA40) 2013-2018 Service Manual: Sleep operation failure of occupant classification ecu

Toyota RAV4. Sleep operation failure of occupant classification ecu


Description

During sleep mode, the occupant classification ecu reads the condition of each sensor while the ignition switch is off.

In this mode, if the occupant classification ecu detects an internal malfunction, dtc b1796 is output.

Toyota RAV4. Sleep operation failure of occupant classification ecu


Inspection procedure

  1. Check for dtc

  1. Turn the ignition switch on.
  2. Clear the dtcs (see page rs-249).

Hint

First clear dtcs stored in the occupant classification ecu and then in the center airbag sensor assembly.

  1. Turn the ignition switch off, and wait for at least 2 seconds.
  2. Turn the ignition switch on.
  3. Check the dtcs (see page rs-249).

Ok: dtc b1796 is not output.

Hint:

Dtcs other than dtc b1796 may be output at this time, but they are not related to this check.



  1. Replace occupant classification ecu

  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 occupant classification ecu (see page rs- 392).

Hint:

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


  1. Perform zero point calibration

  1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds
  2. Connect the intelligent tester to the dlc3.
  3. Turn the ignition switch on.
  4. Using the intelligent tester, perform the zero point calibration (see page rs-241).

Ok: completed is displayed.


  1. Perform sensitivity check

  1. Using the intelligent tester, perform the sensitivity check (see page rs-241).

Standard value: 27 to 33 kg (59.52 To 72.75 Lb)


End

Occupant classification ecu malfunction
Description Dtc b1795 is recorded when a malfunction is detected in the occupant classification ecu. Troubleshoot dtc b1771 first when dtc b1771 and b1795 are output simultaneously. Wir ...

Trouble in passenger airbag on / off indicator
Description The occupant classification system detects the front passenger seat condition and then indicates whether the front passenger airbag is activated or not through the passenger airbag on ...

Other materials:

If the vehicle becomes stuck
Carry out the following procedures if the tires spin or the vehicle becomes stuck in mud, dirt or snow: Recovering procedure 1. Stop the engine. Set the parking brake and shift the shift lever to P. 2. Remove the mud, snow or sand from around the stuck tire. 3. Place wood, stones or some other mat ...

Center airbag sensor communication stop mode
Description Wiring diagram Inspection procedure Notice: Turn the ignition switch off before measuring the resistances of the main wire and the branch wire. After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system ...

Seat belt instructions for canadian owners (in french)
The following is a french explanation of seat belt instructions extracted from the seat belt section in this manual. See the seat belt section for more detailed seat belt instructions in english. Utilisation adéquate des ceintures de sécurité Tirez sur la ceinture &eacut ...

В© 2011-2026 Copyright www.trav4.net