Toyota RAV4 (XA40) 2013-2018 Service Manual: Short in driver side squib circuit

Description
The driver side squib circuit consists of the center airbag sensor, the
spiral cable and the steering pad.
The circuit instructs the srs to deploy when the deployment conditions are met.
These dtcs are recorded when a malfunction is detected in the driver side 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 steering pad (driver side 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 steering pad.
- Connect the white wire side of sst (resistance 2.1 Ù) to
connector e.
Caution:
Never connect a tester to the steering pad (driver
side 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 (ig), 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 b1800, b1801, b1802, b1803 or 51 is not
output.
Hint:
Dtcs other than dtc b1800, b1801, b1802, b1803 or
51 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 the spiral cable.
- Check that the spiral cable connectors (on the steering
pad side) are not damaged.
Ok:
lock button is not disengaged, and claw of lock is
not deformed or damaged.


- Check driver side squib circuit

- Disconnect the connectors 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
- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
- Measure the resistance of the wire harness side
connector.
Standard resistance
- Release the activation prevention mechanism built into
connector b (see page rs-37).
- Measure the resistance of the wire harness side
connector.
Standard resistance


- Check instrument panel wire

- Restore the released activation prevention mechanism
of connector b to its original position.
- Disconnect the instrument panel wire connector from the
spiral cable.
- 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

- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
- Measure the resistance of the wire harness side
connector.
Standard resistance
- Release the activation prevention mechanism built into
connector b (see page rs-52).
- Measure the resistance of the wire harness side
connector.
Standard resistance

Replace spiral cable
Description
The passenger airbag on / off indicator circuit consists of the center airbag
sensor and the heater
control panel*1 or *2.
This circuit indicates the operation condition of the ...
Description
The front passenger side squib circuit consists of the center airbag sensor
and the front passenger airbag.
The circuit instructs the srs to deploy when the deployment conditions ...
Other materials:
Removal
Hint:
Use the same procedures for the rh side and lh side.
The procedures listed below are for the lh side.
Disconnect cable from negative battery
terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and ...
Check and replace ecu
Notice:
The connector should not be disconnected from
the ecu. Perform the inspection from the
backside of the connector on the wire harness
side.
When no measuring condition is specified,
perform the inspection with the engine stopped
and the ignition switch on.
Check that the con ...
Short in front passenger side - side squib circuit
Description
The front passenger side - side squib circuit consists of the center airbag
sensor and the front seat side
airbag rh.
The circuit instructs the srs to deploy when the deployment conditions are met.
These dtcs are recorded when a malfunction is detected in the front passenge ...