Toyota RAV4 Service Manual: Short in front driver side pretensioner squib circuit

Description
The driver side front pretensioner squib circuit consists of the center
airbag sensor and the front seat
outer belt lh.
This circuit instructs the srs to deploy when the deployment conditions are met.
These dtcs are recorded when a malfunction is detected in the front pretensioner
squib circuit.

Wiring diagram

Inspection procedure
Hint:
- Perform the simulation method by selecting the "check mode" (signal
check) with the intelligent
tester (see page rs-52).
- After selecting the "check mode" (signal check), perform the simulation
method by wiggling each
connector of the airbag system or driving the vehicle on a city or rough
road (see page rs-52).
- Check front seat outer belt assembly lh (driver side front
pretensioner squib)

- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
- Disconnect the connectors from the front seat outer belt
lh.
- Connect the white wire side of sst to connector c.
Caution:
Never connect a tester to the front seat outer belt lh
(driver side front pretensioner squib) for
measurement, as this may lead to a serious injury
due to airbag deployment.
Notice:
- Do not forcibly insert sst into the terminals of the
connector when connecting.
- Insert sst straight into the terminals of the
connector.
Sst 09843-18060
- 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.
- Clear the dtcs (see page rs-49).
- Turn the ignition switch off.
- Turn the ignition switch on, and wait for at least 60
seconds.
- Check the dtcs (see page rs-49).
Ok:
dtc b1900, b1901, b1902, b1903 or 73 is not
output.
Hint:
Dtcs other than dtc b1900, b1901, b1902, b1903 or
73 may be output at this time, but they are not related to
this check.


- Check connector
- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
- Disconnect sst from connector c.
- Check that the floor wire connector (on the driver side
front seat outer belt) is not damaged.
Ok:
the lock button is not disengaged, or the claw of
the lock is not deformed or damaged.


- Check floor wire (driver side front pretensioner squib circuit)

- Disconnect the connector from the center airbag sensor.
- Connect the cable to the negative (-) battery terminal,
and wait for at least 2 seconds.
- Turn the ignition switch on.
- Measure the voltage of the wire harness side connector.
Standard voltage
- Release the activation prevention mechanism built into
connector b (see page rs-37).
- Measure the resistance of the wire harness side
connector.
Standard resistance


Replace center airbag sensor assembly
Description
The front passenger side curtain shield squib circuit consists of the center
airbag sensor and the curtain
shield airbag rh.
The circuit instructs the srs to deploy when the dep ...
Description
The front passenger side front pretensioner squib circuit consists of the
center airbag sensor and the front
seat outer belt rh.
This circuit instructs the srs to deploy whe ...
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Description
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Stop the vehicle on a level surface.
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Infotainment
Radio
Changing the entertainment source
CD/DVD drive
Eject CD/DVD
Changing the station/track
Programmable memory buttons
Sound output on/off, volume
Waveband/satellite radio
Navigation destination entry
Entering a destination via quick
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