Toyota RAV4 manuals

Toyota RAV4 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:

Brake warning light remains on
Description If any of the following conditions are detected, the brake warning light remains on: The ecu connectors are disconnected from the skid control ecu. The brake fluid level is insufficient. The parking brake is applied. The ebd is defective. Wiring diagram Inspection p ...

How to use this manual
General information General description This manual is written in accordance with sae j2008. Diagnosis Removing / installing, replacing, disassembling / reassembling, checking and adjusting Final inspection The following procedures are omitted from this manual. Howeve ...

Throttle / pedal position sensor / switch "A" circuit range / performance problem
Hint: This dtc relates to the throttle position (tp) sensor. Description Refer to dtc p0120 (see page es-114). Monitor description The ecm uses the tp sensor to monitor the throttle valve opening angle. This sensor transmits two signals: vta1 and vta2. Vta1 is used to detect the th ...

В© 2011-2020 Copyright www.trav4.net