Toyota RAV4 (XA40) 2013-2018 Service Manual: Lost communication with front satellite sensor bus rh
Description
The front airbag sensor rh consists of the diagnostic circuit and the frontal
deceleration sensor.
If the center airbag sensor receives signals from the frontal deceleration
sensor, it determines whether or
not the srs should be activated.
Dtc b1602/83, b1603/83, b1612/83 or b1613/83 is recorded when a malfunction is
detected in the front
airbag sensor rh circuit.
Wiring diagram
Inspection procedure
- 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 airbag sensor rh.
Ok:
the connectors are connected.
- Check front airbag sensor rh circuit (open)
- Disconnect the connectors from the center airbag sensor
and the front airbag sensor rh.
- Using a service wire, connect a29-2 (+sr) and a29-1 (-
sr) of connector e.
Notice:
Do not forcibly insert a service wire into the
terminals of the connector when connecting.
- Measure the resistance of the wire harness side
connector.
Standard resistance
- Check front airbag sensor rh circuit (short)
- Disconnect the service wire from connector e.
- Measure the resistance of the wire harness side
connector.
Standard resistance
- Check front airbag sensor rh circuit (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 front airbag sensor rh circuit (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 front airbag sensor rh
- Connect the connectors to the center airbag sensor .
- Interchange the front airbag sensor rh and lh, and
connect the connectors to them.
- 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).
Result
Hint:
Dtcs other than dtc b1602/83, b1603/83, b1612/83,
b1613/83, b1607/84, b1608/84, b1617/84 and b1618/
84 may be output at this time, but they are not related to
this check.
Use simulation method to check
- Check engine room main wire (open)
- Disconnect the service wire from connector e.
- Disconnect the engine room main wire connector from
the instrument panel wire.
- Using a service wire, connect ae9-2 (+sr) and ae9-1 (-
sr) of connector d.
Notice:
Do not forcibly insert a service wire into the
terminals of the connector when connecting.
- Measure the resistance of the wire harness side
connector.
Standard resistance
Repair or replace instrument panel wire
- Check engine room main wire (short)
- Disconnect the engine room main wire connector from
the instrument panel wire.
- Disconnect the service wire from connector e.
- Measure the resistance of the wire harness side
connector.
Standard resistance
Repair or replace instrument panel wire
- Check engine room main wire (to b+)
- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
- Disconnect the engine room main wire connector from
the instrument panel wire.
- 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
Repair or replace instrument panel wire
- Check engine room main wire (to ground)
- Disconnect the engine room main wire connector from
the instrument panel wire.
- Measure the resistance of the wire harness side
connector.
Standard resistance
Repair or replace instrument panel wire
Description
The center airbag sensor consists of the airbag sensor, the safing sensor,
the drive circuit, the diagnosis
circuit and the ignition control.
If the center airbag sensor receive ...
Description
The front airbag sensor lh consists of the diagnostic circuit and the frontal
deceleration sensor.
If the center airbag sensor receives signals from the frontal deceleration
se ...
Other materials:
Side doors
The vehicle can be locked
and unlocked using the
entry function, wireless
remote control, door lock
switches, key or inside lock
buttons.
Unlocking and locking the
doors from the outside
â– Using the entry function
(vehicles with smart key
system)
Carry the electronic key to
enable this function.
...
Ecm communication stop mode (2006/01- )
Description
Wiring diagram
Inspection procedure
Notice:
Turn the ignition switch off before measuring the resistances of the
main wire and branch
wire.
After the ignition switch is turned off, check that the key reminder
warning system and light
reminder warning system ...
Customize parameters
Customizing function with intelligent
tester (reference)
Hint:
The following item can be customized.
Notice:
When the customer requests a change in a
function, first make sure that the function can be
customized.
Make a note of the current settings before
customizing.
When tr ...