Toyota RAV4 Service Manual: 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 /
off indicator
illumination.
The passenger airbag on / off indicator illumination changes depending on the
front passenger seat
condition as shown in the table below.

Wiring diagram

Inspection procedure
- Check srs warning light
- Turn the ignition switch on, and check the srs warning
light condition.
Ok:
the srs warning light does not come on.

- Check passenger airbag on/off indicator condition
- Turn the ignition switch on.
- Check if the passenger airbag on / off indicator
correctly indicates the front passenger seat condition.
Ok 

- Perform zero point calibration
- Turn the ignition switch off.
- Connect the intelligent tester (with can vim) 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
- Retighten front seat assembly rh bolt
- Turn the ignition switch off.
- Loosen the 4 installation bolts of the front seat rh.
- Tighten the 4 installation bolts of the front seat rh to the
specified torque (see page se-22).
Torque:
37 n*m{ 377 kgf*cm , 27 ft.*Lbf }

- Perform zero point calibration
- Connect the intelligent tester (with can vim) 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)

- Check connector
- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
- Check that the connectors are properly connected to the
occupant classification ecu and the 4 occupant
classification sensors.
Ok:
the connectors are connected.
- Disconnect the connectors from the occupant
classification ecu and the 4 occupant classification
sensors.
- Check that the connectors are not damaged or
deformed.
Ok:
the connectors are normal.

- Check for dtc
- Connect the connectors to the occupant classification
ecu and the 4 occupant classification sensors.
- Connect the cable to the negative (-) battery terminal,
and wait for at least 2 seconds.
- Turn the ignition switch on, and wait for at least 60
seconds.
- Turn the ignition switch off.
- Clear the dtcs (see page rs-249).
- Turn the ignition switch on, and wait for at least 60
seconds.
- Check the dtcs (see page rs-249).
Ok:
dtc is not output.

- 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 (with can vim) 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
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