Toyota RAV4 (XA40) 2013-2018 Service Manual: Passenger airbag on / off indicator circuit malfunction
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.
Hint:
- *1: For automatic air conditioning system
- *2: For manual air conditioning system
Wiring diagram
Inspection procedure
- Check passenger airbag on/off indicator operation
- Turn the ignition switch on.
- Check the passenger airbag on / off indicator operation.
Result
- 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.
- Check front passenger airbag on/off indicator light
- 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.
- Check instrument panel wire (for open)
- 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
Hint:
*1: For automatic air conditioning system
*2: For manual air conditioning system
- Check instrument panel wire (for short)
- Disconnect the service wire from connector b.
- Measure the resistance of the wire harness side connectors.
Standard resistance
- Check instrument panel wire (to b+)
- 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
- 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 connectors.
Standard resistance
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.
- Check instrument panel wire (for open)
- 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
Hint:
*1: For automatic air conditioning system
*2: For manual air conditioning system
- Check instrument panel wire (for short)
- Disconnect the service wire from connector b.
- Measure the resistance of the wire harness side connector.
Standard resistance
- Check instrument panel wire (to b+)
- 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
- 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
- Check wire harness (power source)
- 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
- Check front passenger airbag on/off indicator light
- 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
- Check center airbag sensor assembly
- 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.
Use simulation method to check
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Other materials:
Seat belts
Make sure that all occupants
are wearing their seat
belts before driving the
vehicle.
WARNING
Observe the following precautions
to reduce the risk of injury in the
event of sudden braking, sudden
swerving or an accident.
Failure to do so may cause death
or serious injury.
â– Wearing a seat belt
E ...
Parts location
System diagram
Hint:
The abs and traction actuator (skid control ecu)
detects and stores steering sensor and yaw rate
sensor dtcs and performs dtc communication by
receiving information from the steering sensor and
yaw rate sensor.
The ecm uses the can communication sy ...
Head restraints
Head restraints are provided
for all seats.
WARNING
â– Head restraint precautions
Observe the following precautions
regarding the head restraints.
Failure to do so may result in
death or serious injury.
Use the head restraints
designed for each respective
seat.
Adjust the head restraints to th ...
