Toyota RAV4 (XA40) 2013-2018 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 ...
Other materials:
Steering angle sensor zero point malfunction
Description
The skid control ecu learns the steering sensor zero point every time the
ignition switch is turned on and
the vehicle is driven at 35 km/h (22 mph) or more for approximately 5 seconds.
The ecu also stores the
previous zero point.
If front wheel alignment or the steering wh ...
Turn signal lever
Operating instructions
Right turn
Lane change to the right
(move the lever partway and
release it)The right hand signals will flash 3
times.
Lane change to the left
(move the lever partway and
release it)
The left hand signals will flash 3
times.
Left turn
â– Turn signals can be operat ...
Taillight relay circuit
Description
When the light control switch, located on the headlight dimmer switch, is
turned to the tail position, the
taillight relay (marking: t-lp) turns on to illuminate the front side marker
lights, rear taillights, side marker
lights and license plate light.
Wiring diagram
Ins ...