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:
Torque converter clutch solenoid circuit
Description
The shift solenoid valve dsl is turned on and off by signals from the ecm to
control the hydraulic
pressure acting on the lock-up relay valve, which then controls operation of the
lock-up clutch.
Fail-safe function:
if the ecm detects a malfunction, it turns the shift sol ...
Data list / active test (2006/01- )
Read data list
Hint:
Using the intelligent tester's data list allows switch,
sensor, actuator and other item values to be read without
removing any parts. Reading the data list early in
troubleshooting is one way to save time.
Connect the intelligent tester (with can vim) to the
...
Digital Rear-view Mirror
The Digital Rear-view Mirror
is a system that uses the
camera on the rear of the
vehicle and displays its
image on the display of the
Digital Rear-view Mirror.
The Digital Rear-view Mirror
can be changed between
optical mirror mode and digital
mirror mode by operating
the lever.
The Digital Rear-v ...
