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:
Precaution
Caution:
The vehicle is equipped with a supplemental restraint
system (srs), which consists of a steering pad, front
passenger airbag, curtain shield airbag, front seat side
airbag, seat belt pretensioner, center airbag sensor,
front airbag sensor, side airbag sensor, rear airbag
senso ...
System description
Lighting system
Illumination control system (illuminated entry
system):
When the doors are unlocked by a key or
transmitter operation, or when a door is opened or
closed, the illuminated entry system turns on the
room light, map light, foot light and ignition key
cylinder light*1 o ...
Child restraint system
fixed with a seat belt
A child restraint system for a
small child or baby must itself be
properly restrained on the seat
with the lap portion of the
lap/shoulder belt.
â– Installing child restraint
system using a seat belt
(child restraint lock function
belt)
Install the child restraint system
in accordance to the operat ...
