Toyota RAV4 (XA40) 2013-2018 Service Manual: 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.
Inspection procedure
- Check for dtc
- Turn the ignition switch on.
- 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.
- Turn the ignition switch off, and wait for at least 2 seconds.
- Turn the ignition switch on.
- 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.
- Replace occupant classification ecu
- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
- Replace the occupant classification ecu (see page rs- 392).
Hint:
Perform the inspection using parts from a normal vehicle if possible.
- Perform zero point calibration
- Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds
- Connect the intelligent tester to the dlc3.
- Turn the ignition switch on.
- Using the intelligent tester, perform the zero point calibration (see page rs-241).
Ok: completed is displayed.
- Perform sensitivity check
- 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:
Air conditioning amplifier 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 sy ...
Customize parameters
Hint:
The following items can be customized.
Notice:
When the customer requests a change in a function,
first make sure that the function can be customized.
Be sure to make a note of the current settings before
customizing.
When troubleshooting a function, first make sure that
the fu ...
Turn signal lever
Operating instructions
Right turn
Lane change to the right (move
the lever partway and release
it)
the right hand signals will flash 3
times.
Lane change to the left (move
the lever partway and release
it)
the left hand signals will flash 3
times.
Left turn
Turn signals ...
