Toyota RAV4 (XA40) 2013-2018 Service Manual: Passenger airbag on / off indicator circuit malfunction
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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 front passenger airbag,
the front passenger side airbag
and passenger side seat belt pretensioner.
Dtc b1660/43 is set when a malfunction is detected in the passenger airbag on /
off indicator circuit.
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Hint:
- *1: For automatic air conditioning system
- *2: For manual air conditioning system
Wiring diagram
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Inspection procedure
- Check passenger airbag on/off indicator operation
- Turn the ignition switch on.
- Check the passenger airbag on / off indicator
operation.
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Result
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- Check connection of 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
center airbag sensor and the front passenger seat belt
warning light.
Ok:
the connectors are properly connected.
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- Check front passenger airbag on/off indicator light
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- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
- 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.
- Check the passenger airbag on / off indicator
operation.
Ok:
neither on nor off passenger airbag on / off
indicator comes on.
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- Check instrument panel wire (for open)
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- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
- Disconnect the connector from the front passenger
airbag on / off indicator light.
- Using a service wire, connect e45-23 (paon) and e45-
17 (p-ab) of connector b.
Notice:
Do not forcibly insert the service wire into the
terminals of the connector when connecting.
- Measure the resistance of the wire harness side
connectors.
Standard resistance
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Hint:
*1: For automatic air conditioning system
*2: For manual air conditioning system
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- Check instrument panel wire (for short)
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- Disconnect the service wire from connector b.
- Measure the resistance of the wire harness side
connectors.
Standard resistance
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- Check instrument panel wire (to b+)
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- 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
connectors.
Standard voltage
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- Check instrument panel wire (to ground)
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- 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
connectors.
Standard resistance
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Replace front passenger airbag on/off indicator light
- Check connection of 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
center airbag sensor and the heater control panel*1 or
clock*2.
Ok:
the connectors are properly connected.
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- Check instrument panel wire (for open)
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- Disconnect the connector from the front passenger
airbag on / off indicator light
- Using a service wire, connect e45-23 (paon) and e45-
17 (p-ab) of connector b.
Notice:
Do not forcibly insert the service wire into the
terminals of the connector when connecting.
- Measure the resistance of the wire harness side
connectors.
Standard resistance
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Hint:
*1: For automatic air conditioning system
*2: For manual air conditioning system
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- Check instrument panel wire (for short)
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- Disconnect the service wire from connector b.
- Measure the resistance of the wire harness side
connector.
Standard resistance
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- Check instrument panel wire (to b+)
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- 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
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- Check instrument panel wire (to ground)
- 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
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- Check wire harness (power source)
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- 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
Hint:
*1: For automatic air conditioning system
*2: For manual air conditioning system
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- Check front passenger airbag on/off indicator
light
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- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
- Disconnect the connector from the heater control
panel*1 or clock sub-assembly*2.
- Connect the cable to the negative (-) battery terminal,
and wait for at least 2 seconds.
- Using a service wire, connect e23-6*1 e22-4*2 (paon)
and e23-7*1 e22-5*2 (gnd) of the heater control panel
*1 or clock*2.
Hint:
*1: For automatic air conditioning system
*2: For manual air conditioning system
- Using a service wire, connect e23-13*1 e22-9*2 (p-ab)
and e23-7 *1 e22-5*2 (gnd) of the heater control panel
*1 or clock*2.
Hint:
*1: For automatic air conditioning system
*2: For manual air conditioning system
- Turn the ignition switch on
- Check the passenger airbag on / off indicator
operation.
Ok:
front passenger airbag on / off indicator comes
on
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- Check center airbag sensor assembly
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- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
Hint:
*1: For automatic air conditioning system
*2: For manual air conditioning system
- Connect the connector to the center airbag sensor.
- Connect the connector to the heater control panel*1 or
clock*2.
- 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 for dtcs (see page rs-49).
Ok:
dtc b1660/43 is not output.
Hint:
Dtcs other than b1660/43 may be output at this time,
but they are not related to this check.
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Use simulation method to check
Description
The driver side seat belt buckle switch circuit consists of the center airbag
sensor and the front seat inner
belt lh.
Dtc b1655/37 is recorded when a malfunction is detected in ...
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 ...
Other materials:
Driving the vehicle
The following procedures
should be observed to
ensure safe driving:
Driving procedure
■ Driving
1. With the brake pedal
depressed, shift the shift
lever to D.
2. Release the parking brake.
If the parking brake is in automatic
mode, the parking brake will be
released automatically.
3. Gradually re ...
Removal
Drain engine coolant (see page co-6)
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 seat belt pretensioner activation.
Remove no. 1 Engine cover
Remove ...
Optimal use of the audio system
Displays the “setup” menu
Changes the following settings
Sound quality and volume
balance
The sound quality and balance
setting can be changed to produce
the best sound.
Automatic sound levelizer
Language
Selecting the mode
Using the audio control function
C ...