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:
Ambient temperature sensor circuit
Description
The ambient temperature sensor is installed in the front part of the
condenser to detect the ambient
temperature and control the air conditioner. The sensor is connected to the
combination meter and
detects fluctuations in the ambient temperature. This data is used for
contr ...
Open in pump motor circuit
Description
The motor relay drives the pump motor based on a signal from the skid control
ecu.
Wiring diagram
Refer to dtc c0273/13, c0274/14, c1361/91 (see page bc-79).
Inspection procedure
Perform active test by intelligent tester (motor relay)
Select the active test, gener ...
The rear cross traffic
alert function
The areas that vehicles can be detected in are outlined below.
The range of the detection area
extends to:
Approximately 11.5 Ft. (3.5 M)
from the side of the vehicle
The first 1.6 Ft. (0.5 M) from the
side of the vehicle is not in the
detection area
Approximately 9.8 Ft. (3 M) fr ...
